A-F → 4.0 scale · 2026 edition

Letter Grade to GPA Converter

Type your course letter grades and credit hours, see the live unweighted 4.0-scale GPA. Built for students who got back report cards with letters and need the GPA number their college portal or scholarship form is asking for.

No signupMobile-first5 weighting scales

Your weighted GPA

4.42

Unweighted: 3.86

APAP Calculus BC

HONHonors English

A-

REGChemistry

B+

Live Update

Match your school

5 scales built-in

Unweighted GPA (4.0 scale)

3.50A− / B+ average

Courses: 4 · Credits: 14 · Quality points: 49.00

Course name	Letter	Points	Credits
		4.0
		3.3
		3.7
		3.0

Letter → GPA point conversion

Standard unweighted 4.0 scale used by most US high schools and colleges.

A+4.0

A4.0

A-3.7

B+3.3

B3.0

B-2.7

C+2.3

C2.0

C-1.7

D+1.3

D1.0

D-0.7

F0.0

Updated June 2026Reviewed by BestGPACalculator Editorial TeamMethodology →

How letter-to-GPA conversion works

Definition

Letter grade

A coded representation of a percentage range. A is roughly 90-100%, B is 80-89%, C is 70-79%, D is 60-69%, F is anything below. The pluses and minuses split each letter into three sub-bands: A− is the bottom of the A range (90-92%), A is the middle (93-96%), A+ is the top (97-100%).

The conversion to GPA points is fixed: each letter maps to a single number on the 4.0 scale. The only math is the credit-weighted average: (Σ letter-point × credits) ÷ Σ credits. The calculator above does this live as you type.

Scale used: Unweighted 4.0 (A = 4.0, A+ = 4.0)
Formula: Σ (points × credits) ÷ Σ credits
A+ on this scale: 4.0 (same as A — no bonus)
Lowest passing: D− = 0.7 (F = 0.0)

Full conversion table

The 4.0 scale is the US default. Use this for unweighted GPA — the version most college admissions offices recalculate to.

Letter	Percentage range	GPA points
A+ / A	93-100%	4.0
A−	90-92%	3.7
B+	87-89%	3.3
B	83-86%	3.0
B−	80-82%	2.7
C+	77-79%	2.3
C	73-76%	2.0
C−	70-72%	1.7
D+	67-69%	1.3
D	65-66%	1.0
D−	60-64%	0.7
F	below 60%	0.0

Worked example

Four classes in a semester: English (A, 3 cr), Calculus (B+, 4 cr), Chemistry (A−, 4 cr), History (B, 3 cr).

English   A   × 3  = 4.0 × 3 = 12.0
Calculus  B+  × 4  = 3.3 × 4 = 13.2
Chemistry A-  × 4  = 3.7 × 4 = 14.8
History   B   × 3  = 3.0 × 3 =  9.0
                       ----
quality points         49.0
credits                14
GPA = 49.0 / 14    =   3.50

When letter-to-GPA breaks down

4.3 scale (Columbia GS, some grad programs): A+ = 4.3, otherwise same. Multiply this calculator's result by ~1.075 if all your A's are actually A+'s, or use the school's calculator directly.
Weighted high school GPA: AP and honors add bonus points (+1.0, +0.5). Use the weighted GPA calculator instead.
LSAC / law school GPA: Uses a 4.33 scale with no grade replacement (every attempt counts). Use the LSAC GPA calculator.
Percentage grades from non-US schools: Convert to letters first, or use the percentage to GPA calculator.

What to do with the number

Once you have the GPA, you can compare it against benchmarks: a GPA scale guide shows what each range means in practice. If you are aiming for a specific target — Dean's List, scholarship cutoff, transfer requirement — the GPA goal calculator works backwards to tell you what you need next semester. And if you want to see how each letter affects the overall, the cumulative GPA calculator handles multi-semester running averages.

Frequently asked questions

How do I convert a letter grade to GPA points?

On the standard unweighted 4.0 scale: A = 4.0, A− = 3.7, B+ = 3.3, B = 3.0, B− = 2.7, C+ = 2.3, C = 2.0, C− = 1.7, D+ = 1.3, D = 1.0, D− = 0.7, F = 0.0. Each letter has a fixed point value. To get a GPA across multiple courses, multiply each course's point value by its credit hours, sum those, and divide by total credit hours.

Is A+ worth more than A on a 4.0 scale?

No. On the standard unweighted 4.0 scale, A+ and A both equal 4.0 — there is nothing above a 4.0. Some colleges (e.g. Stanford undergrad, Columbia GS) use a 4.3 scale where A+ = 4.3, but the default 4.0 system caps at A. This converter follows the 4.0 standard.

What if my school does not use minus grades (B−, C−)?

Pick the closest letter that exists at your school. If your school records only A, B, C, D, F, treat anything in the B range as B = 3.0. The converter still works — you just will not use the A−, B+, B− options. Many high schools dropped pluses and minuses entirely; check your transcript before assuming.

Should I include credit hours?

Yes, when you have them. A 4-credit calculus class with an A weighs more than a 1-credit gym class with a C. If your school does not track credits (most middle schools, some high schools), set every credit value to 1 — that becomes a simple unweighted average.

How is this different from a weighted GPA calculator?

This converter gives you the unweighted GPA: every A counts as 4.0 regardless of whether it was honors, AP, or regular. A weighted GPA calculator adds bonus points (+0.5 honors, +1.0 AP) so an A in AP Calc becomes 5.0 instead of 4.0. Colleges usually recalculate to unweighted, but high schools often use weighted for class rank — use the weighted calculator for that.

Why is my converted GPA different from what my school reports?

Three common reasons. (1) Your school uses a different scale — some use 4.33 with A+ = 4.33, some use 5.0 base. (2) Your school weights honors/AP. (3) Your school uses percentage-based GPA (e.g. percent ÷ 25) instead of letter-based. Check your school's grading policy and pick the matching calculator.

What's the difference between an A and an A−?

0.3 GPA points per credit. An A = 4.0, A− = 3.7. Across a 4-credit course, that's 16.0 quality points vs 14.8 quality points — over a 30-credit semester, every A− instead of A drags your GPA down by about 0.04. Important for borderline cases (e.g. trying to keep a 3.5+ for scholarships).