How to convert a percentage to GPA
The dependable method has two steps:
- Percentage → letter grade. Find the band your percentage falls in (for example, 85% is a B).
- Letter grade → grade points. Read off the 4.0-scale value (a B is 3.0).
That two-step route is more accurate than any single formula because it respects the cutoffs your school actually uses. A common quick approximation for US-style grading is GPA ≈ (percentage ÷ 20) − 1 — so 90% ≈ 3.5 — but it drifts from the table at the edges and ignores plus/minus grades, so prefer the letter-grade method when the number matters. The single most important thing to understand is that a percentage is not a GPA: the letter grade in between is where your school’s policy lives, and that policy is exactly what varies.
Worked example — convert each grade first
When you have several percentage grades, the order of operations matters. Convert each class to a letter and grade points first, then average — do not average the percentages and convert once, because the two routes can disagree. Here are two classes, each worth the same credits:
| Class | Percentage | Letter | Grade points |
|---|---|---|---|
| Biology | 90% | A- | 3.7 |
| Economics | 80% | B- | 2.7 |
Convert first, then average: (3.7 + 2.7) ÷ 2 = 3.20. If you had instead averaged the percentages — (90 + 80) ÷ 2 = 85% — and converted once, you would get a B (3.0). Same grades, two different answers. The convert-first method (3.20) is the correct one, and it is what the GPA calculator does when you enter the letters. If your classes carry different credit hours, weight them by credits as shown in how to calculate your GPA.
International grades: there is no universal formula
Converting grades from outside the US is genuinely hard, and it is worth being blunt about why: there is no single official formula, and no website can give you an authoritative number. Grading systems abroad are not just the US scale in different clothes — they define a “pass,” a “top mark,” and the spacing between grades differently. A percentage that looks low by US standards can be excellent elsewhere. Below are the systems students ask about most.
India — percentage and CGPA
Indian universities report grades two ways: a raw percentage and, increasingly, a CGPA on a 10-point scale. The most-cited shortcut, from the CBSE board, is:
Percentage ≈ CGPA × 9.5
So a CGPA of 8.0 approximates to about 76%. Treat this as rough — it comes from one board’s subject-average data and does not hold for every university. The bigger trap is what a percentage means: in the Indian system, roughly 60% and above is First Class, 50–60% is Second Class, and marks in the 70s or 80s are outstanding and often rare, because exams are marked far more harshly than US coursework. Feeding a 62% First Class into a naive US table would call it a D, which is badly wrong. This is precisely why credential evaluators exist.
United Kingdom — honours classifications
UK degrees are not averaged into a GPA at all; they end in a classification. A first is around 70% and up — a mark most US students would find shockingly low for “top of the class,” until you realize 70% in the UK is genuinely exceptional. The bands are:
- First-Class Honours (1st): 70%+ — roughly a 3.7–4.0 in US terms.
- Upper Second (2:1): 60–69% — roughly 3.3–3.7, the classification most graduate programs and employers expect.
- Lower Second (2:2): 50–59% — roughly 3.0.
- Third (3rd): 40–49% — a pass, roughly 2.0–2.7.
Note the passing bar is 40%, far below a US school’s 60%. Mapping UK marks with a US percentage table would fail almost everyone, which is why the classification, not the raw percent, is what travels.
ECTS — the European comparison scale
The European Credit Transfer System (ECTS) grades on a curve rather than a fixed percentage. Grades describe where you fall in your cohort: A is roughly the top 10% of passing students, B the next 25%, C the next 30%, D the next 25%, and E the lowest 10% that still passes; F/FX fail. Because the grade is relative to the group, not an absolute score, any 4.0 conversion is approximate — a common rough mapping is A ≈ 4.0, B ≈ 3.5, C ≈ 3.0, D ≈ 2.5, E ≈ 2.0.
The generic percentage ÷ maximum approximation
When you have nothing else, a crude cross-system estimate is:
GPA ≈ (your percentage ÷ maximum percentage) × 4
On a 100-point scale, 75% gives (75 ÷ 100) × 4 = 3.0. It is easy, but its limits are exactly the ones above: it assumes a linear scale and a US-style pass, so it understates systems like India’s and the UK’s where the top of the achievable range sits well below 100%. Use it only for a first, disposable estimate.
International quick reference
Rough, estimate-only equivalents to a US 4.0 GPA. Every row varies by institution and evaluator — do not treat any of these as official.
| System | Local grade | Approx. US GPA |
|---|---|---|
| India (percentage) | First Class (60%+) | ~3.3–4.0 |
| India (percentage) | Second Class (50–59%) | ~2.7–3.3 |
| India (CGPA /10) | 8.0 CGPA | ~3.6 |
| UK honours | First (70%+) | ~3.7–4.0 |
| UK honours | Upper Second (2:1) | ~3.3–3.7 |
| UK honours | Lower Second (2:2) | ~3.0 |
| ECTS | A / B / C | ~4.0 / 3.5 / 3.0 |
| Generic % | (pct ÷ max) × 4 | linear estimate |
Who converts grades officially
Because the systems differ, official conversions come from specific authorities — and each may give a slightly different result:
- The receiving institution. Many US schools publish their own conversion tables and prefer them over any third party. Use theirs first if it exists.
- Credential evaluators such as WES, Scholaro, and ECE evaluate transcripts professionally; their report is what most admissions and licensing offices accept.
- Generic converters (including this one) are estimates. They are useful for gauging where you roughly stand, never as the official figure on an application.
Common mistakes to avoid
- Averaging percentages before converting. Convert each grade to points first, then average — as the worked example shows, the two routes can disagree.
- Using a US table on international marks. A UK 68% or an Indian 62% is strong in its own system; a US table would misread both as mediocre or failing.
- Trusting the CGPA × 9.5 shortcut as exact. It is one board’s approximation, not a universal law.
- Treating a self-calculated number as official. For applications, use the transcript figure or a recognized evaluator.
- Ignoring plus/minus policy. If your school does not use minuses, 90% is a flat A (4.0), not an A- (3.7) — check before you convert.
For the letter-and-percentage scale itself, see the GPA scale page; the how-to-calculate-GPA guide covers the full credit-weighted averaging method, and how to calculate grades explains where a single class percentage comes from in the first place.
Last updated September 2026. All conversions on this page — US and international alike — are estimates. Grading systems differ by institution and country, and there is no universal formula; confirm any figure that matters with your registrar or a recognized credential evaluator such as WES or Scholaro.