Letter Grade Calculator
Type in a percentage (or the raw score and total) and the calculator instantly returns the matching letter grade and 4.0 GPA point, plus a full reference table that shows which band your mark falls into. Four widely-used scales are supported: US 4.0 GPA with +/−, US 10-point, UK Honours (First, 2:1, 2:2, Third) and the IB 1–7 grade — handy for international students comparing transcripts, UK university applicants, and anyone converting a percentage into a US GPA.
Enter a percentage between 0 and 100.
Letter grade
B+
GPA · 3.3
Percentage
87.0%
Full grading table
| Range | Grade | GPA |
|---|
Actual cut-offs vary by institution and course — defer to your school's grading policy.
Formula
Percentage % = score ÷ total × 100 Boundaries used (inclusive of the lower bound): US 4.0 A+ ≥97 · A ≥93 · A− ≥90 · B+ ≥87 · B ≥83 · B− ≥80 · C+ ≥77 · C ≥73 · C− ≥70 · D+ ≥67 · D ≥63 · D− ≥60 · F < 60 US 10pt A ≥90 · B ≥80 · C ≥70 · D ≥60 · F < 60 UK Hons First ≥70 · 2:1 ≥60 · 2:2 ≥50 · Third ≥40 · Fail < 40 IB (approx.) 7 ≥85 · 6 ≥75 · 5 ≥65 · 4 ≥55 · 3 ≥45 · 2 ≥35 · 1 < 35
- · US 4.0 GPA point mapping (with +/−) is 4.0/4.0/3.7/3.3/3.0/2.7/2.3/2.0/1.7/1.3/1.0/0.7/0.0 — used by most US universities, though some (MIT, Yale, etc.) have their own variants.
- · The US 10-point scale (A = 90+, B = 80+, …) is common in US high schools and some colleges; it does not use +/− and maps to GPA 4/3/2/1/0.
- · UK Honours classifications are calculated from a weighted average across the whole degree — the widget tells you which class a percentage falls into, not your final degree classification.
- · IB 1–7 boundaries are criterion-referenced and re-set each examination session by the IB; the percentages here are the College Board IB-to-US conversion approximations and may differ from any one subject's actual cut-offs.
- · Some schools set the D−/F line at 65% or 70%, and some have abandoned the D grade entirely — always check your institution's grading policy before relying on a single conversion.
- · Sources: US college 4.0 scale (College Board and the published grade policies of most US universities); UK QAA Framework for Higher Education Qualifications; IB Diploma Programme grade descriptors; College Board IB Credit & Placement guide.
Frequently asked
Is an 84% an A or a B in the US system?
On the US 10-point scale 84% is a B (the entire 80–89 band is B). On the US 4.0 +/− scale 84% is also a B (83–86 = B = 3.0). Both mainstream US systems put 84% squarely as a B — you would need 87% to reach B+ and 90% to enter the A range. Some universities use a 93+ A cut-off rather than 90+, so always double-check against your school's syllabus.
What does a UK First class roughly translate to in US GPA?
A UK First requires at least 70%, but because UK and US grading cultures differ (a UK 70+ is exceptional, a US 70+ is only a C), there is no direct percentage mapping. Common North-American admissions/employer approximations: First class ≈ GPA 3.7–4.0; Upper Second (2:1) ≈ 3.3–3.7; Lower Second (2:2) ≈ 2.7–3.3; Third ≈ 2.0–2.7. The exact conversion depends on the receiving institution — services like NACES and WES (World Education Services) issue official transcript evaluations.
Does an IB 7 map to a US 4.0?
A single IB 7 is widely treated as an A / 4.0 in US admissions, but the IB diploma total (out of 45) does not simply divide into a US GPA. The College Board IB-to-US conversion guide maps HL 7 = A, HL 6 = A−/B+, HL 5 = B, HL 4 = C, and HL 3 or below receives no college credit; SL grades convert one band lower. US universities then apply their own admission GPA rules (weighted GPA, +0.5 IB bonus, etc.), so check the IB credit policy of each target school during applications.
Why does 60% land on D− rather than F?
The US 4.0 +/− scale places 60–62% at D− (GPA 0.7) — the minimum passing grade. 63–66% is D, 67–69% is D+, and only above that do you enter the C range; anything below 60% is F (GPA 0.0). That mapping is the mainstream university version, but some schools (some law and medical programmes especially) treat any D as a fail, or push the D− floor up to 65%. Always defer to your syllabus. If you do not want +/− detail at all, switch to the US 10-point scale where 60% is simply a D.
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