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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...

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...

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...

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,...

Convert any volume to floor area for a given depth: m³, cm³, mm³, dm³, L, ft³, in³, yd³, US/UK gal → m², cm², dm²,...

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,...

Compute area in cm² from rectangle, circle, triangle, trapezoid, parallelogram, and regular polygon dimensions. Compute area in square centimeters for six shapes: rectangle, circle, triangle...

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...

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...

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,...

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...

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...

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...

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...

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...

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...

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...

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:...

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...

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 —...

Compute total area of flat sheets from length, width, and count in m² or ft². Calculate the area of rectangular sheets — drywall, plywood, OSB,...

Compute volume of a box or rectangular prism in m³, L, ft³, or gallons. Enter length, width, and height — in meters, centimeters, millimeters, inches,...

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...

Draw triangles, quadrilaterals, circles, and segments — see angles, lengths, area. Interactive geometry tool that draws shapes from coordinates and reports every measurement at once....

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,...

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...

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...

Plot y = ax² + bx + c with vertex, roots, axis of symmetry, and SVG graph. Enter the coefficients a, b, c of a...

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...

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...

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...

Convert inches to pixels at 72, 96, 150, or 300 DPI. Convert inches to pixels using the exact formula pixels = inches x DPI. The...

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...

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,...

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...

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)...

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...

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,...

Convert pixels to millimeters at 72, 96, 150, or 300 DPI. This converter turns pixel measurements into millimeters using the standard formula mm = px...

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...

Convert millimeters to pixels at 72, 96, 150, or 300 DPI. This converter turns millimeters into pixels using the formula px = mm / 25.4...

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...

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...

Convert cubic yards to cubic feet and back. 1 yd³ = 27 ft³. Use for concrete, mulch, topsoil, and gravel delivery estimates. Convert between cubic...

Convert square feet to square yards and back. 1 yd² = 9 ft². Use for carpet, fabric, landscaping, and US lot size estimates. Convert between...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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,...

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...

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...

Convert colors between HEX, RGB, HSL, HSV and CMYK with alpha, WCAG contrast check and palette variations. The Color Converter parses any color format you...

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...

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...

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...

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...

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...

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...

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...

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...

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:...

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...

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...

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...

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...

Convert pressure between Pa, kPa, MPa, bar, psi, atm, mmHg, kgf/cm² and more — all units shown at once with click-to-copy. This pressure converter handles...

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...

Calculate any root — square, cube, or nth — with decimal precision and exact form, for any index from 2 to 32. This tool computes...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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)...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

Convert between real and scaled lengths for drawings, maps and models. Find the ratio from two measurements. Rebase between scales. A scale ratio relates a...

Convert kilonewtons (kN) to tonnes-force (t) and back using standard gravity 9.80665 m/s². This calculator converts between kilonewtons (kN) and tonnes-force (t), using the standard...

Convert feet to inches — including ft'in" height input. 6 ft = 72 in; 5'8" = 68 in. This converter turns feet (ft) into inches...

Convert inches to feet — decimal feet and the ft/in split (for example 68 in = 5 ft 8 in). This converter turns inches (in)...

Feet to yards converter using the exact 1 ft = 1/3 yd ratio. Covers fabric yardage, carpet runners, landscape fencing, and square or cubic...

Yards to feet converter with exact 3 ft per yard ratio, football field references, fabric and landscape use cases, and a reverse feet to...

Convert rectangular dimensions in millimeters into area in square meters for drawings, panels, plates and PCBs. This tool computes the area of a rectangle when...