Square Root Calculator
Calculate sqrt(x) with a decimal answer, simplified radical form and perfect-square checks.
Square Root CalculatorCalculate sqrt(x) with a decimal answer, simplified radical form and perfect-square...
Square Millimeters to Square Meters Area Calculator
Convert rectangular dimensions in millimeters into area in square meters for drawings, panels, plates and PCBs.
For mm to m², use two dimensions in millimeters....
Barrel Water Volume Calculator (m³, L)
Calculate the volume of water in a barrel using metric units (liters, cubic meters).
How to Calculate Barrel Volume
This calculator determines the volume of a...
Barrel Water Volume Calculator (gal, ft³)
Calculate the volume of water in a barrel using imperial units (gallons, cubic feet).
How to Calculate Barrel Volume in Imperial Units
This calculator computes barrel...
Bowl Volume Calculator (mL, L)
Calculate the volume of a bowl in milliliters and liters from its dimensions.
How to Calculate Bowl Volume
This calculator computes the internal volume of a...
Bowl Volume Calculator (fl oz, gal)
Calculate the volume of a bowl in fluid ounces and gallons from its dimensions.
How to Calculate Bowl Volume in Imperial Units
Determine how much liquid...
Bucket Volume Calculator (mL, L)
Calculate the volume of a bucket in milliliters and liters from its dimensions.
How to Calculate Bucket Volume
This calculator finds the volume of a bucket...
Bucket Volume Calculator (fl oz, gal)
Calculate the volume of a bucket in fluid ounces and gallons from its dimensions.
How to Calculate Bucket Volume in Imperial Units
Determine bucket capacity in...
Ellipsoid Volume Calculator (m³, L)
Calculate the volume of an ellipsoid in cubic meters and liters from its three semi-axes.
How to Calculate Ellipsoid Volume
Compute the volume of an ellipsoid...
Ellipsoid Volume Calculator (gal, ft³)
Calculate the volume of an ellipsoid in gallons and cubic feet from its three semi-axes.
How to Calculate Ellipsoid Volume in Imperial Units
Determine the volume...
Frying Pan Volume Calculator (mL, L)
Calculate the volume of a frying pan in milliliters and liters from its dimensions.
How to Calculate Frying Pan Volume
This calculator determines how much a...
Frying Pan Volume Calculator (fl oz, gal)
Calculate the volume of a frying pan in fluid ounces and gallons from its dimensions.
How to Calculate Frying Pan Volume in Imperial Units
Determine frying...
Gas Cylinder Volume Calculator (m³, L)
Calculate the internal volume of a gas cylinder in liters and cubic meters.
How to Calculate Gas Cylinder Volume
This calculator computes the internal volume of...
Gas Cylinder Volume Calculator (gal, ft³)
Calculate the internal volume of a gas cylinder in gallons and cubic feet.
How to Calculate Gas Cylinder Volume in Imperial Units
Determine the internal volume...
Hemisphere Volume Calculator (m³, L)
Calculate the volume of a hemisphere in cubic meters and liters from its radius or diameter.
How to Calculate Hemisphere Volume
Compute the volume of a...
Hemisphere Volume Calculator (gal, ft³)
Calculate the volume of a hemisphere in gallons and cubic feet from its radius or diameter.
How to Calculate Hemisphere Volume in Imperial Units
Determine the...
Horizontal Cylinder Tank Volume (m³, L)
Calculate the volume and fill level of a horizontal cylindrical tank in liters and cubic meters.
How to Calculate Horizontal Cylinder Tank Volume
Compute total and...
Horizontal Cylinder Tank Volume (gal, ft³)
Calculate the volume and fill level of a horizontal cylindrical tank in gallons and cubic feet.
How to Calculate Horizontal Cylinder Volume in Imperial Units
Determine...
Horizontal Elliptic Tank Volume (m³, L)
Calculate volume and fill level of a horizontal tank with elliptical cross-section in liters and cubic meters.
How to Calculate Horizontal Elliptic Tank Volume
Compute volume...
Horizontal Elliptic Tank Volume (gal, ft³)
Calculate volume and fill level of a horizontal tank with elliptical cross-section in gallons and cubic feet.
How to Calculate Horizontal Elliptic Tank Volume in...
Horizontal Hemispheric Tank Volume (m³, L)
Calculate volume and fill level of a horizontal tank with hemispherical ends in liters and cubic meters.
How to Calculate Horizontal Hemispheric Tank Volume
Compute volume...
Horizontal Hemispheric Tank Volume (gal, ft³)
Calculate volume and fill level of a horizontal tank with hemispherical ends in gallons and cubic feet.
How to Calculate Horizontal Hemispheric Tank Volume in...
Horizontal Oval Tank Volume (m³, L)
Calculate volume and fill level of a horizontal oval (stadium-shaped) tank in liters and cubic meters.
How to Calculate Horizontal Oval Tank Volume
Compute volume of...
Horizontal Oval Tank Volume (gal, ft³)
Calculate volume and fill level of a horizontal oval (stadium-shaped) tank in gallons and cubic feet.
How to Calculate Horizontal Oval Tank Volume in Imperial...
Kettle Volume Calculator (mL, L)
Calculate the volume and water capacity of a kettle in milliliters and liters.
How to Calculate Kettle Volume
This calculator determines how much water a kettle...
Kettle Volume Calculator (fl oz, gal)
Calculate the volume and water capacity of a kettle in fluid ounces and gallons.
How to Calculate Kettle Volume in Imperial Units
Determine kettle water capacity...
Pot Volume Calculator (mL, L)
Calculate the volume and capacity of a cooking pot in milliliters and liters.
How to Calculate Pot Volume
Compute the internal volume of a cooking pot...
Pot Volume Calculator (fl oz, gal)
Calculate the volume and capacity of a cooking pot in fluid ounces and gallons.
How to Calculate Pot Volume in Imperial Units
Determine cooking pot capacity...
Rectangular Tank Volume Calculator (m³, L)
Calculate the volume of a rectangular tank or box in liters and cubic meters.
How to Calculate Rectangular Tank Volume
Compute the volume of a rectangular...
Rectangular Tank Volume Calculator (gal, ft³)
Calculate the volume of a rectangular tank or box in gallons and cubic feet.
How to Calculate Rectangular Tank Volume in Imperial Units
Determine the volume...
Saucepan Volume Calculator (mL, L)
Calculate the volume of a saucepan in milliliters and liters from its dimensions.
How to Calculate Saucepan Volume
This calculator computes saucepan capacity from internal diameter...
Saucepan Volume Calculator (fl oz, gal)
Calculate the volume of a saucepan in fluid ounces and quarts from its dimensions.
How to Calculate Saucepan Volume in Imperial Units
Determine saucepan capacity in...
Sphere Volume Calculator (m³, L)
Calculate the volume of a sphere in cubic meters and liters from its radius or diameter.
How to Calculate Sphere Volume
Compute sphere volume using V...
Sphere Volume Calculator (gal, ft³)
Calculate the volume of a sphere in gallons and cubic feet from its radius or diameter.
How to Calculate Sphere Volume in Imperial Units
Determine sphere...
Torus Volume Calculator (m³, L)
Calculate the volume of a torus (donut shape) in cubic meters and liters.
How to Calculate Torus Volume
Compute the volume of a torus (donut/ring shape)...
Torus Volume Calculator (gal, ft³)
Calculate the volume of a torus (donut shape) in gallons and cubic feet.
How to Calculate Torus Volume in Imperial Units
Determine torus volume using major...
Truncated Cone Volume Calculator (m³, L)
Calculate the volume of a truncated cone (frustum) in cubic meters and liters.
How to Calculate Truncated Cone Volume
Compute the volume of a frustum (truncated...
Truncated Cone Volume Calculator (gal, ft³)
Calculate the volume of a truncated cone (frustum) in gallons and cubic feet.
How to Calculate Truncated Cone Volume in Imperial Units
Determine frustum volume in...
Vertical Conical Tank Volume (m³, L)
Calculate volume and fill level of a vertical tank with conical bottom in liters and cubic meters.
How to Calculate Vertical Conical Tank Volume
Compute volume...
Vertical Conical Tank Volume (gal, ft³)
Calculate volume and fill level of a vertical tank with conical bottom in gallons and cubic feet.
How to Calculate Vertical Conical Tank Volume in...
Vertical Tank with Cone Bottom (m³, L)
Calculate volume of a vertical cylindrical tank with truncated cone bottom in liters and cubic meters.
How to Calculate Vertical Truncated Cone Bottom Tank Volume
Compute...
Vertical Tank with Cone Bottom (gal, ft³)
Calculate volume of a vertical cylindrical tank with truncated cone bottom in gallons and cubic feet.
How to Calculate Vertical Cone-Bottom Tank Volume in Imperial...
Wok Volume Calculator (mL, L)
Calculate the volume and capacity of a wok in milliliters and liters.
How to Calculate Wok Volume
Determine the internal volume of a wok from its...
Wok Volume Calculator (fl oz, gal)
Calculate the volume and capacity of a wok in fluid ounces and gallons.
How to Calculate Wok Volume in Imperial Units
Determine wok capacity in fluid...
Wood Cladding Calculator — boards, battens and cost estimate
Calculates the number of boards, battens, fixings and cost for wood cladding installation.
How to Use the Wood Cladding CalculatorThis calculator determines the quantity of...
Logarithm Calculator
Compute log_b(x) for any base, solve for base or argument, work exponentials b^y, with change-of-base formula and reference table.
This logarithm calculator handles four tasks...
Nth Root Calculator
Calculate any root — square, cube, or nth — with decimal precision and exact form, for any index from 2 to 32.
This tool computes...
Geschwindigkeitsrechner
Convert between m/s, km/h, mph, knots, ft/s, ft/min, cm/s, mm/s, Mach, km/s and mi/min with instant bidirectional output and click-to-copy values.
Speed Converter handles eleven...
Pressure Converter
Convert pressure units including kgf/cm² to kN/m², kPa to atm and bar to psi. Enter one value and the calculator shows Pa, kPa, MPa,...
Matrix Calculator
Perform matrix addition, subtraction, multiplication, scalar multiplication, determinant, inverse, transpose and rank in one tool.
This matrix calculator combines eight common linear-algebra operations into a...
Energy & Power Converter
Convert between energy units (joule, kWh, BTU, calorie, therm, ft·lb, electronvolt) and power units (watt, kilowatt, horsepower, BTU/h) in one tool.
This converter handles two...
Fraction Calculator
Add, subtract, multiply, and divide two fractions with step-by-step explanation, automatic simplification, and mixed, improper, and decimal result views.
This fraction calculator performs the four...
Age Calculator
Calculate exact age in years, months, days, hours and more from a birth date.
This age calculator takes your date of birth and an as-of...
GST Calculator
Calculate GST inclusive or exclusive price for India, Australia, Canada, NZ and more.
This GST calculator works for every major Goods and Services Tax regime:...
Tip Calculator
Calculate tip, total and per-person share for any bill, any currency and any split.
Work out the tip amount, the final total and the per-person...
GCF & LCM Calculator
Compute the greatest common factor and least common multiple of 2 to 10 positive integers, with step-by-step Euclidean algorithm and prime factorization.
This calculator finds...
Loan Calculator
Calculate loan EMI, total interest, amortization schedule, payoff date and extra-payment impact across 7 currencies.
Loan calculator that computes the Equated Monthly Installment (EMI), total...
Temperature Converter
Convert temperature between Celsius, Fahrenheit, Kelvin, Rankine, Réaumur, Delisle, Newton and Rømer — all eight scales at once with click-to-copy values.
The Temperature Converter displays...
Exponent Calculator
Compute x raised to the power y with exact big-integer results, scientific notation and step-by-step expansion. Includes reverse modes to find the base or...
Number Base Converter
Convert integers between binary, octal, decimal, hexadecimal and any base from 2 to 36, with step-by-step math, bitwise operations and two's complement view.
This number...
BMI Calculator
Body Mass Index calculator with metric and imperial units, color-coded category, healthy weight range and visual BMI scale.
This BMI calculator computes Body Mass Index...
Compound Interest Calculator
Project the growth of savings with compounding, contributions and year-by-year breakdown.
This compound interest calculator projects how an investment grows when interest is reinvested each...
Calorie Calculator
Daily calorie needs calculator with BMR, TDEE, goal-based targets and macronutrient breakdown in metric and imperial units.
This calorie calculator estimates daily energy needs from...
Pace Calculator
Running pace calculator with distance, time, speed, split tables and Riegel finish-time predictions.
This running pace calculator works in three directions: enter distance and time...
Aspect Ratio Calculator
Calculate aspect ratio from width and height, find a missing dimension from a known ratio, or proportionally scale any rectangle. Includes presets for 16:9,...
Pregnancy Due Date Calculator
Estimate your due date from LMP, conception date, ultrasound, or IVF transfer. Shows current gestational week, trimester, key milestones and a pregnancy timeline.
This pregnancy...
DPI Calculator
Calculate screen PPI, effective print DPI, and the pixel dimensions required for any print size.
DPI calculator that handles three jobs in one place. Screen...
Wire Size Calculator
Size electrical wire by ampacity and voltage drop. Shows both AWG and metric mm² recommendations for copper or aluminum conductors.
The Wire Size Calculator determines...
Prime Factor Calculator
Primality check, prime factorization, and full divisor list for positive integers up to one trillion.
Check whether a number is prime, split any positive integer...
Modulo Calculator
Compute quotient, remainder, GCD, and modular exponentiation with three sign conventions and BigInt precision.
The Modulo Calculator computes a mod b for integers of any...
LLM Token Counter and API Cost Calculator
Estimate tokens and API cost for GPT, Claude, Gemini, Llama and Mistral from any prompt. Per-model pricing, context window usage and total-cost calculator.
This calculator...
Scientific Notation Calculator
Convert numbers between standard, scientific, engineering and E-notation. Parses any input format, rounds to significant figures and does arithmetic on two values.
Convert any number...
Data Transfer Calculator
Compute transfer time, maximum file size or required bandwidth from file size and network speed, with decimal and binary units.
This tool converts between file...
Cloud Cost Calculator
Compare monthly AWS, Google Cloud, Azure, DigitalOcean and Linode bills for compute, storage, egress and managed database in one place.
The Cloud Cost Calculator estimates...
Volume Unit Converter
Convert between 24 volume units: mL, L, m3, cubic inches/feet/yards, US and UK fluid ounces, pints, quarts, gallons and barrels.
This converter handles 24 volume...
Meters to Cubic Meters Converter — V = L × W...
Convert length, width, and height in meters directly to cubic meters (m³). Instant equivalents in liters, ft³, in³, gallons.
Convert three dimensions in meters directly...
Square Feet to Square Yards Converter (ft² to yd²)
Convert square feet to square yards and back. 1 yd² = 9 ft². Use for carpet, fabric, landscaping, and US lot size estimates.
Convert between...
Cubic Yards to Cubic Feet Converter (yd³ to ft³)
Convert cubic yards to cubic feet and back. 1 yd³ = 27 ft³. Use for concrete, mulch, topsoil, and gravel delivery estimates.
Convert between cubic...
Centimeters to Pixels Converter
Convert centimeters to pixels at 72, 96, 150, or 300 DPI.
This converter turns a centimeter measurement into pixels using the chosen DPI (dots per...
Click Counter
Tally counter with keyboard shortcuts, custom step, and saved value.
A browser-based tally counter that keeps a running total you control with large buttons or...
Millimeters to Pixels Converter
Convert millimeters to pixels at 72, 96, 150, or 300 DPI.
This converter turns millimeters into pixels using the formula px = mm / 25.4...
Pixels to Centimeters Converter
Convert pixels to centimeters at 72, 96, 150, or 300 DPI.
Convert any pixel value to centimeters, millimeters, and inches using the DPI (dots per...
Pixels to Millimeters Converter
Convert pixels to millimeters at 72, 96, 150, or 300 DPI.
This converter turns pixel measurements into millimeters using the standard formula mm = px...
Sine Calculator
Calculate sin of any angle in degrees or radians with exact common values.
This sine calculator returns sin(θ) for any angle in degrees or radians,...
Tangent Calculator
Calculate tan of any angle in degrees or radians with exact common values.
This tool evaluates the tangent of any angle, accepting input in degrees...
Cotangent Calculator
Calculate cot of any angle in degrees or radians with exact common values.
This tool computes the cotangent of an angle using cot(θ) = cos(θ)...
Cosine Calculator
Calculate cos of any angle in degrees or radians with exact common values.
Compute the cosine of any angle in degrees or radians to 8...
Arctangent Calculator
Compute inverse tangent of any real number with result in degrees or radians.
This arctangent calculator returns the inverse tangent of any real number x,...
Arcsine Calculator
Compute inverse sine for input in with result in degrees or radians.
Inverse sine (arcsin, sin⁻¹) returns the angle whose sine equals a given...
Inches to Pixels Converter
Convert inches to pixels at 72, 96, 150, or 300 DPI.
Convert inches to pixels using the exact formula pixels = inches x DPI. The...
Arccosine Calculator
Compute inverse cosine for input in with result in degrees or radians.
Compute the inverse cosine (arccos, acos, cos⁻¹) of any value x in...
DMS to Decimal Degrees Converter
Convert coordinates between degrees-minutes-seconds and decimal degrees both ways.
Convert geographic coordinates between degrees-minutes-seconds (DMS) and decimal degrees in either direction. Enter a DMS value...
Months of the Year
Reference of the 12 months with days, abbreviations, seasons, and quarters.
A reference widget for the 12 months of the Gregorian calendar. The interactive table...
Parabola Graph Plotter
Plot y = ax² + bx + c with vertex, roots, axis of symmetry, and SVG graph.
Enter the coefficients a, b, c of a...
Split Image Into Grid
Upload an image, pick grid size, download each cell as a PNG.
This utility cuts any picture you already have on your device into an...
Fourth Root Calculator
Compute the fourth root of a number with step-by-step formula ⁴√x = x^(1/4) = √(√x).
Enter any number to get its fourth root (⁴√x) to...
Greater Than / Less Than Calculator
Compare two numbers, fractions, or decimals with the correct inequality symbol.
Compare any two values and see which is greater, smaller, or equal. Enter integers,...
Geometry Shape Builder
Draw triangles, quadrilaterals, circles, and segments — see angles, lengths, area.
Interactive geometry tool that draws shapes from coordinates and reports every measurement at once....
Cylinder Volume Calculator
Compute cylinder volume from diameter or radius and height in multiple units.
Compute the internal volume of any right circular cylinder from its diameter (or...
Rectangular Prism Volume Calculator
Compute volume of a box or rectangular prism in m³, L, ft³, or gallons.
Enter length, width, and height — in meters, centimeters, millimeters, inches,...
Sheet Area Calculator
Compute total area of flat sheets from length, width, and count in m² or ft².
Calculate the area of rectangular sheets — drywall, plywood, OSB,...
Tank Volume Calculator
Volume of cylindrical, rectangular, and capsule tanks with partial-fill support.
Compute the liquid capacity of a tank from its inner dimensions. Pick a shape —...
Paper Sheet Weight Calculator
Compute weight of paper sheets from GSM or US lb Bond and sheet count.
Work out how much a stack of paper weighs from its...
Price per Square Meter Calculator
Convert between total price, area in m², and price per square meter.
This tool converts between three values that any buyer, landlord or contractor needs:...
Price per Square Foot Calculator
Convert between total price, area in ft², and price per square foot.
Work out the price per square foot from a total amount and an...
Slope Percent to Degrees
Convert slope percent to angle in degrees with ratio and mm/m equivalents.
Turns a slope given in percent into the equivalent angle in degrees using...
Degrees to Slope Percent
Convert angle in degrees to slope percent with ratio and mm/m equivalents.
Enter an angle in degrees and get the slope as a percent, rise-to-run...
Pipe Cross-Section Area Calculator
Compute inner cross-section flow area of a pipe from diameter or OD and wall thickness.
Find the internal flow area of a round pipe from...
GPA Calculator
Compute unweighted or weighted GPA on the 4.0 scale with credit hours and AP bonuses.
This GPA calculator converts letter grades into grade points on...
Thousand to Million Converter
Convert between thousand (K), million (M), and Indian lakh numbers.
Convert any number between thousands (K) and millions (M) with one divide-by-1,000 step — the...
Grade Percentage Calculator
Convert between percent, US letter grade, and 4.0 scale GPA.
Look up what a percent score maps to on the standard US 10-point scale and...
Million to Billion Converter
Convert between million, billion, trillion, and Indian lakh/crore on the short scale.
This converter turns an amount in one magnitude unit (thousand, million, billion, trillion,...
One-Third of a Number Calculator
Compute one third of any number as decimal, fraction, and rounded values.
Find one-third of any number in four forms at once: the decimal to...
Two-Thirds of a Number Calculator
Compute two thirds of any number as decimal, fraction, and rounded values.
This calculator returns two-thirds of any number you enter and shows the result...
Square Centimeters Calculator
Compute area in cm² from rectangle, circle, triangle, trapezoid, parallelogram, and regular polygon dimensions.
Square centimeters (cm²) measure area, not length. Use this calculator for...
Square Millimeters Calculator
Compute area in mm² for 5 shapes, round-wire cross-section, and AWG ↔ mm² conversion.
Work out area in square millimetres for five shapes — rectangle,...
Volume to Area Calculator (m³ ↔ m²)
Convert any volume to floor area for a given depth: m³, cm³, mm³, dm³, L, ft³, in³, yd³, US/UK gal → m², cm², dm²,...
Percent Difference Calculator
Calculate percent change, percent difference, or increase or decrease a number by a given percentage with formulas shown.
Compute the percent change, the percent difference,...
Binary to Text and Text to Binary Converter
Convert text to binary and binary back to text, with UTF-8 or ASCII encoding and selectable bit grouping.
Convert any text into its binary representation...
Number Rounding Calculator: Decimals, Tens, Hundreds
Round any number to decimal places, tens, hundreds, thousands or other magnitudes with half-up, half-even, floor, ceiling or truncate.
Round any number to a chosen...
Paving Stones Calculator — Pieces per m² and Total Quantity
Calculate how many paving stones or tiles you need per square meter and the total quantity for your project.
This calculator determines the number of...
Concrete Calculator
Estimate concrete volume in cubic yards, 40/60/80 lb bag counts, and ready-mix truckloads for slabs, patios, driveways, and pads.
How the math works
Pouring a slab...
Sand Calculator
Estimate sand for paver bedding, sandbox fill, pool bases, mortar, and polymeric paver joints — yards, tons, and 50 lb bag counts with rectangle,...
Deck Board Calculator
Estimate deck board count, rows, linear feet, and fasteners by deck size, board length, gap, and material.
How decking math really works
A deck board order...
Roof Pitch Calculator
Convert between roof pitch X/12, degrees, percent slope, and roof-area multiplier with material suitability hints.
What pitch actually means
Roof pitch is a ratio between vertical...
Square Footage Calculator: Rooms, Lots, L-shapes, Trapezoids
Add rectangles, triangles, circles, L-shapes, and trapezoids in one list. Subtract islands and obstacles. Forward the total to the paint, flooring, tile, drywall, sod,...
Deck Stain Calculator
Estimate gallons of deck stain or sealer by floor area, railings, stairs, coats, and wood condition. Splits horizontal and vertical surfaces because their coat...
Paver Calculator
Estimate paver count by pattern, plus base gravel, bedding sand, polymeric joint sand, edge restraint and landscape fabric — the full patio material kit...
Fence Calculator
Estimate fence posts, rails, pickets or panels, concrete bags for footings, and gate hardware for wood privacy, picket, vinyl, and chain link fences.
How post...
Post Hole Concrete Calculator
Estimate concrete bags per post hole — round or square hole, optional 4×4 or 6×6 post displacement, 5 bag sizes, frost-depth notes.
Why the post...
Mulch Calculator
Estimate mulch in cubic yards and 2 or 3 cu ft bags by shape, depth, and area — rectangle, circle, L-shape, tree-ring donut, or...
Roofing Calculator: Squares, Bundles, Underlayment
Estimate roof surface area, squares, shingle bundles, underlayment rolls, drip edge and ridge cap from footprint and pitch.
From footprint to bundles — the three-stage...
Sod Calculator
Estimate sod by yard area: pallet count, roll count, and slab count with editable pallet coverage and 5 percent waste built in.
Pallet coverage is...
Pool Volume Calculator
Estimate pool volume in US gallons, liters, cubic meters and cubic feet for round, oval, rectangle, kidney, L-shape and sectioned pools, with filter turnover,...
Asphalt Calculator
Estimate hot-mix asphalt in tons, cubic yards, and truckloads for driveways, parking pads, resurfacing, and pothole patches — with density-aware math and a 10%...
Grass Seed Calculator
Estimate pounds of grass seed and bag count by area, species, and new lawn vs overseed application — KBG, Tall Fescue, Bermuda, and seven...
Retaining Wall Calculator
Estimate retaining wall block count, buried course, capstones, base and drainage gravel, perforated pipe, and filter fabric — with geogrid threshold warning.
How retaining wall...
Stair Calculator
Calculate risers, riser height, tread count, total run, stringer length, and IRC residential code checks for residential stairs.
How residential stair math works
A code-compliant stair...
Topsoil Calculator
Estimate topsoil in cubic yards, bags, and tons for lawn topdressing, new lawn, raised beds, garden beds, and fill spots — with a 15%...
Grade Average Calculator
Calculate a weighted grade average and the final-exam score needed for a target grade.
Grade Average Calculator
Calculate a weighted grade average and the final-exam score...
P-value Calculator
P-value Calculator. Enter your own values first; presets below the fields are editable examples.
How to useEnter your own values first; presets below the fields...
Confidence Interval Calculator
Confidence Interval Calculator. Enter your own values first; presets below the fields are editable examples.
How to useEnter your own values first; presets below the...
Significant Figures Calculator
Significant Figures Calculator. Enter your own values first; presets below the fields are editable examples.
How to useEnter your own values first; presets below the...
Pythagorean Theorem Calculator
Pythagorean Theorem Calculator. Enter your own values first; presets below the fields are editable examples.
How to useEnter your own values first; presets below the...
Slope From Two Points Calculator
Slope From Two Points Calculator. Enter your own values first; presets below the fields are editable examples.
How to useEnter your own values first; presets...
VAT Net/Gross Calculator
Add VAT, remove VAT from a gross price, or calculate the missing net/gross/tax amount.
VAT Net/Gross CalculatorAdd VAT, remove VAT from a gross price, or...
HEIC to JPG Converter
Convert HEIC/HEIF files to JPG in your browser with batch upload, presets and ZIP download.
How to use itDrop your HEIC/HEIF files into the upload...
HEIC to PNG Converter
Convert HEIC/HEIF files to PNG in your browser with batch upload, presets and ZIP download.
How to use itDrop your HEIC/HEIF files into the upload...
WEBP to JPG Converter
Convert WEBP files to JPG in your browser with batch upload, presets and ZIP download.
How to use itDrop your WEBP files into the upload...
PNG to JPG Converter
Convert PNG files to JPG in your browser with batch upload, presets and ZIP download.
How to use itDrop your PNG files into the upload...
JPG to PNG Converter
Convert JPG/JPEG files to PNG in your browser with batch upload, presets and ZIP download.
How to use itDrop your JPG/JPEG files into the upload...
TIFF to JPG Converter
Convert TIFF/TIF files to JPG in your browser with batch upload, presets and ZIP download.
How to use itDrop your TIFF/TIF files into the upload...
AVIF to JPG Converter
Convert AVIF files to JPG in your browser with batch upload, presets and ZIP download.
How to use itDrop your AVIF files into the upload...
AVIF to PNG Converter
Convert AVIF files to PNG in your browser with batch upload, presets and ZIP download.
How to use itDrop your AVIF files into the upload...
Compress Image to KB
Compress JPG, PNG, WEBP or AVIF images to a target size in KB directly in your browser.
How to use itAdd one or more images,...
JPG to PDF Converter
Combine JPG and JPEG images into a PDF in your browser with batch upload, page size presets, margins and one PDF download.
How to use...
PNG to PDF Converter
Convert PNG images to PDF locally in your browser with multiple files, transparency background, A4/Letter presets and margins.
How to use itAdd PNG files, choose...
Image to PDF Converter
Create a PDF from images in your browser: JPG, PNG, WEBP and AVIF, multiple files, page presets, margins and one document.
How to use itAdd...
PDF to JPG Converter
Convert PDF pages to JPG in your browser with multiple PDFs, page ranges, scale, quality settings and ZIP download.
How to use itAdd one or...