Grade Calculator An A is 93% to 96% on the standard US grading scale. Most schools split the top of the scale further: an A+ is 97–100%, a plain A is 93–96%, and an A− is 90–92%. Your school or teacher can use slightly different cutoffs, so your syllabus is always the final word.
The standard US percentage scale
The scale below is the one most American high schools and colleges use. Every percentage maps to a letter grade, and every letter grade maps to grade points on the 4.0 GPA scale:
| Letter grade | Percentage | Grade points |
|---|---|---|
| A+ | 97–100% | 4.0 |
| A | 93–96% | 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 |
| F | Below 65% | 0.0 |
Is a 93 an A?
Yes. On the standard scale, 93% is the lowest score that earns a plain A. A 92% is an A−, and a 97% is an A+ — 93 sits right at the bottom of the A band.
Two things can move that line. First, rounding: many teachers round a 92.5% up to 93%, which would push you into A territory — but plenty of schools never round, and some even truncate decimals. Second, your school’s own scale: on the simplified 90/80/70/60 scale (no plus or minus), anything from 90% up is a plain A, so a 93 is comfortably an A there too.
If you are sitting at 92-point-something and wondering which side of the line you land on, check the grading policy in your syllabus before you assume. It is the difference between a 4.0 and a 3.7 on your GPA.
What percentage is an A+?
An A+ is 97% to 100%. A few schools set the bar even higher at 98%, but 97 is the standard cutoff. It is the top of the mountain: perfect or near-perfect work.
Here is the twist most students do not expect: on the standard unweighted 4.0 scale, an A+ and an A are both worth 4.0 grade points. The plus is mostly a mark of distinction on your transcript. Some schools with weighted scales do give the A+ extra credit — commonly 4.3 points — so if your school weights grades, that 98% might be doing more work for you than you think. Our weighted GPA calculator handles those bonus points.
What about an A−?
An A− is 90% to 92%, worth 3.7 grade points. This is the grade that catches students off guard. A 91% feels like an “A” in every way that matters — until you run the GPA math and discover it counts as 3.7, not 4.0.
Over a full semester, that gap adds up. Three A grades give you a 4.0; three A− grades give you a 3.7. Same report card vibe, noticeably different GPA. If you want to see exactly how much an A− is costing you, plug your courses into our GPA calculator and compare.
Not every school uses the same cutoffs
The scale above is standard, but it is not universal. Here are the most common variations:
The simple 10-point scale. Many high schools skip plus and minus entirely: A = 90–100%, B = 80–89%, C = 70–79%, D = 60–69%, F = below 60%. On this scale, a 91% is a full A worth 4.0 — no 3.7 penalty.
Stricter scales. Some schools and districts raise the bar: an A might require 94%, with the A− band covering 90–93%. These schools are tougher at the top, which is worth knowing before you transfer credits.
Teacher discretion. Individual teachers can curve grades, set their own bands, or round generously — and their syllabus overrules everything on this page. A teacher who curves can turn a class-wide 88% average into B+ territory, or leave it as a B.
College vs. high school. Colleges are more likely to use plus/minus grading, and some use straight letters only. If you are heading to college, check how your future school grades — it changes what a 91% is worth.
Quick conversion examples
Converting a score to a percentage is simple division: (your score ÷ total points) × 100. Then match the result to the table.
- 47 out of 50 → 47 ÷ 50 × 100 = 94% → A
- 183 out of 200 → 183 ÷ 200 × 100 = 91.5% → A−
- 89% → B+ — one point short of an A−. The classic heartbreak grade.
- 96.4% → rounds to 96% → A (at schools that round)
- 88.7% → rounds to 89% → B+
Doing this by hand gets old fast. Our grade percentage calculator converts any score to a percentage instantly. And if you are chasing an A and wondering what you need on the final exam to get there, the final grade calculator will tell you the exact number.
Common mistakes when reading your grades
Assuming your school rounds up. Many schools do not round at all. A 92.9% at a no-rounding school is an A−, full stop. Check the policy instead of hoping.
Treating an A− like an A in GPA math. It is 3.7, not 4.0. Students who estimate their GPA with straight 4.0s for every “A-range” grade end up disappointed.
Using the US scale for a school abroad. Grading works very differently outside the US — the UK uses degree classifications, India uses its own percentage bands, and Pakistan’s scale has different cutoffs. See our country grading guide before converting international grades.
Confusing percent with percentile. Scoring 93% means you earned 93 out of 100 points. Being in the 93rd percentile means you beat 93% of test-takers. Different numbers, different meanings.
Forgetting some schools do not award A+. If your school caps at A, there is no 97% bonus tier — just the plain A band.
Frequently asked questions
Is a 92% an A or an A−?
An A−. The plain-A band starts at 93% on the standard scale. The one exception: some teachers round a 92.5% or higher up to 93%, which would make it an A — ask your teacher about their rounding rule.
What is the lowest percent for an A?
93% on the standard US scale. If you count the broader A range (including A−), the floor is 90%. On simplified 90/80/70/60 scales with no plus/minus, 90% is the floor for an A.
Is an A+ worth more than an A?
Usually not. On the standard unweighted 4.0 scale, both an A+ and an A count as 4.0 grade points. On some weighted scales, an A+ earns 4.3. It looks great on a transcript either way, but check your school’s scale to see if it moves your GPA.
Do colleges see my percentages or just letter grades?
Just letter grades — and the GPA built from them. Percentages almost never appear on transcripts, which is exactly why the letter bands matter so much. A 91% and a 99% can look identical (both “A”) or very different (A− vs. A+) depending on your school’s scale.
What percent is an A on a 90/80/70/60 scale?
90% to 100%. Without plus and minus grades, everything from 90 up is a plain A worth 4.0 grade points. This is the friendliest version of the scale for students hovering in the low 90s.
How can I raise a B+ to an A−?
First, find out exactly how many points you need: enter your current grade and the weight of your remaining work into the final grade calculator. Then focus your study time where the points are — a heavily weighted final can pull a B+ into A− range with one strong performance.
Want to track your running grade all semester? Our free grade calculator updates your percentage live as you add scores.