Letter Grade Calculator

Frequently Asked Questions

What percentage is required for an A?

On the standard plus/minus scale, a plain A requires 93% or higher. An A− starts at 90%. On the simplified five-letter scale, any score from 90 to 100 earns an A. Some institutions use different cutoffs, so always confirm with your instructor or registrar.

Does A+ count differently from A for GPA?

On the standard US 4.0 scale used here, both A+ and A equal 4.0 GPA points. Some colleges award 4.3 for an A+, in which case it does provide a small GPA advantage. Check your institution's specific policy.

What letter grade is a 70%?

On the standard plus/minus scale, 70% falls in the C− bracket (70–72.99%), worth 1.7 GPA points. On the simplified scale, 70% falls in the C bracket (70–79.99%), worth 2.0 GPA points.

What is the minimum passing grade?

In most US institutions, a D (60% or higher) is passing for general credit, but many programs require a C (73%+) or higher in major courses to count toward the degree. Check your program's specific requirements.

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How This Calculator Works

You enter your numeric percentage score and choose between two scales: the standard scale with plus and minus modifiers (A+, A, A−, B+, and so on) or a simplified five-letter scale (A, B, C, D, F) with no modifiers. The calculator finds the bracket your score falls into and returns both the letter and its GPA point value. A reference table highlights your result so you can see exactly where you land and where the next grade boundary is. No rounding is applied - an 89.9 stays a B+, not an A−.

Method

Each scale is a list of brackets defined by letter, lower bound, upper bound, and GPA points. The tool finds the first bracket where your score is ≥ the lower bound and ≤ the upper bound. Standard scale brackets: A+ 97–100 (4.0), A 93–96.99 (4.0), A− 90–92.99 (3.7), B+ 87–89.99 (3.3), B 83–86.99 (3.0), B− 80–82.99 (2.7), C+ 77–79.99 (2.3), C 73–76.99 (2.0), C− 70–72.99 (1.7), D+ 67–69.99 (1.3), D 63–66.99 (1.0), D− 60–62.99 (0.7), F 0–59.99 (0.0). Simplified scale: A 90–100 (4.0), B 80–89.99 (3.0), C 70–79.99 (2.0), D 60–69.99 (1.0), F below 60 (0.0).

Worked Example

You scored 87.5%. On the standard plus/minus scale, 87.5 falls in the 87–89.99 bracket: B+, GPA 3.3. On the simplified scale, 87.5 falls in the 80–89.99 bracket: B, GPA 3.0. Same percentage, different GPA weight depending on which scale your school uses. A score of 89.9 stays a B+ on the standard scale and is not rounded up to an A−; strict cutoffs apply without rounding.

Common Mistakes

Assuming all schools use plus/minus. Many K–12 systems and some colleges use the simplified five-letter scale, where a 92 and a 98 are both a flat A.

Expecting your score to be rounded up. An 89.9 is a B+ on the standard scale, not an A−; boundaries are strict.

Confusing the percentage with the GPA point value. An 87.5% is not a 3.75 GPA; the letter grade bracket determines the GPA weight.

Applying a US scale to an international transcript. UK, German, French, and South Asian systems use entirely different boundaries and should not be compared directly.

Thinking A+ always exceeds A on GPA. On the standard US 4.0 scale, A+ and A both map to 4.0 - A+ carries no GPA advantage, though some schools award 4.3.

Tips and FAQ

Which scale should I pick? Confirm with your registrar or course syllabus. The plus/minus system gives finer resolution and is common at US universities; the simple scale is typical in K–12. Does A+ help my GPA? On most 4.0 scales A+ and A both equal 4.0, so an A+ does not raise your GPA above 4.0 - though some schools award 4.3 for A+. How do international grades roughly map? A UK First (≥70%) ≈ A, German 1.0–1.3 ≈ A (their scale runs inverse, 1 best), French 16–20 ≈ A, and South Asian ≥75% ≈ A, though these are approximations only. What about borderline scores? If you are one point from the next letter, ask your instructor whether rounding is applied - policies vary and this tool uses strict cutoffs.

Letter Grade Calculator

Frequently Asked Questions

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