Compute unweighted or weighted GPA on the 4.0 scale with credit hours and AP bonuses.
| Course name | Grade | Credits | Type |
|---|
Grade-point scale
| Letter | Percent (typical) | Unweighted | Weighted Honors | Weighted AP |
|---|---|---|---|---|
| A+ / A | 93–100% | 4.0 | 4.5 | 5.0 |
| A- | 90–92% | 3.7 | 4.2 | 4.7 |
| B+ | 87–89% | 3.3 | 3.8 | 4.3 |
| B | 83–86% | 3.0 | 3.5 | 4.0 |
| B- | 80–82% | 2.7 | 3.2 | 3.7 |
| C+ | 77–79% | 2.3 | 2.8 | 3.3 |
| C | 73–76% | 2.0 | 2.5 | 3.0 |
| C- | 70–72% | 1.7 | 2.2 | 2.7 |
| D+ | 67–69% | 1.3 | 1.8 | 2.3 |
| D | 65–66% | 1.0 | 1.5 | 2.0 |
| F | below 65% | 0.0 | 0.0 | 0.0 |
How the 4.0 scale works
The standard US 4.0 scale assigns 4.0 to an A, 3.0 to a B, 2.0 to a C, 1.0 to a D and 0.0 to an F. Pluses and minuses adjust by 0.3 or 0.4 in most districts (A- = 3.7, B+ = 3.3). Each course contributes grade_points multiplied by credit hours; GPA equals the sum of those quality points divided by the sum of credits.
Weighted vs unweighted GPA
Unweighted GPA treats every course the same, capping out at 4.0. Weighted GPA rewards harder classes: Honors courses add +0.5 and AP / IB courses add +1.0 to the grade point for that row, so a weighted GPA can reach 5.0. Colleges recalculate GPA their own way during admissions, but both numbers appear on the transcript.
UK / Australia percentage equivalents
US transcripts list letters; UK and AU schools list percentages or honours classes. Rough equivalences:
- UK First Class (70%+) - A / A+ / 4.0 GPA
- UK Upper Second 2:1 (60-69%) - A- to B+ / 3.3-3.7 GPA
- UK Lower Second 2:2 (50-59%) - B to B- / 2.7-3.0 GPA
- UK Third (40-49%) - C+ to C / 2.0-2.3 GPA
- AU High Distinction (85%+) - A+ / 4.0 GPA
- AU Distinction (75-84%) - A / 3.7-4.0 GPA
- AU Credit (65-74%) - B+ to B / 3.0-3.3 GPA
FAQ
What exactly is a GPA?
Grade Point Average is a weighted average of your course grades, where the weight is credit hours. Each letter grade maps to a grade point (A = 4.0, B = 3.0, etc.). Multiply by credits to get quality points, sum across every course, and divide by total credits. The number is reported on transcripts and used by colleges, scholarships and honour societies to compare academic performance on a single scale.
What is the difference between weighted and unweighted GPA?
Unweighted GPA uses the 4.0 scale regardless of course difficulty. Weighted GPA adds +0.5 for Honors and +1.0 for AP / IB, so a B in an AP class earns 4.0 instead of 3.0, and the scale extends to 5.0. Weighted reflects rigor; unweighted reflects raw performance. Most US high schools report both; many colleges recalculate to an unweighted version using only academic core courses.
Is A+ worth 4.0 or 4.3?
It depends on the school. The College Board and most US high schools cap A and A+ at 4.0, so there is no bonus for perfect grades. Some universities and a few districts treat A+ as 4.3 on an extended scale. This calculator uses the common 4.0 cap - if your school uses 4.3, adjust manually or treat A+ rows as weighted Honors for a +0.3 bump.
How do colleges look at GPA?
Most US admissions offices recalculate GPA using their own rubric: they strip non-academic courses, apply their own weighting, and compare to the applicant pool at your high school. A 3.7 unweighted or 4.3 weighted is competitive for selective schools, but admissions teams look at course rigor, trend (upward or downward), and context against your school profile - not just the number.
Can UK or AU students use this calculator?
Yes, but convert percentages to the closest letter first. A UK First (70%+) maps to A / 4.0. Australian High Distinction (85%+) also maps to A / 4.0. WES, ECE and other credential evaluators use similar tables when converting overseas transcripts for US graduate applications, so this calculator produces a reasonable US-equivalent GPA for scholarship forms and grad-school applications.
This GPA calculator converts letter grades into grade points on the US 4.0 scale, weights each course by its credit hours, and returns a running Grade Point Average. Two modes: Unweighted caps every course at 4.0; Weighted adds +0.5 for Honors and +1.0 for AP or IB, extending the scale to 5.0. Add as many rows as you need, type the letter grade (A+ through F), enter credits (default 3), and the total credits plus quality points update instantly. Example: an A in 3-credit English (4.0×3 = 12.0), a B in 4-credit Math (3.0×4 = 12.0), and an A- in 3-credit Biology (3.7×3 = 11.1) sum to 35.1 quality points over 10 credits, giving a 3.51 GPA. Works for high-school transcripts, college semesters, and UK or Australian students converting percentages for WES and grad-school applications.