Wondering what your letter grade is worth on a 4.0 scale? A letter grade to GPA converter turns any grade — from A+ to F — into its GPA value instantly. Whether you are a student checking what a B+ means for your semester, a parent reading a report card, or a teacher confirming grade points, this tool does the conversion for you with zero math and zero guesswork.
| Letter Grade | GPA | Percentage Range |
|---|
Values shown are the most widely used unweighted 4.0-scale conversions in U.S. schools and colleges. Some schools use slightly different cutoffs or count A+ as 4.33 — always check your own school's grading scale.
How to Use This Calculator
- Select your letter grade. Tap any grade button from A+ through F. The result updates automatically the moment you click.
- Press “Convert to GPA.” The button re-runs the conversion if you want a fresh confirmation.
- Read your result. Your GPA value appears in large text, along with a performance label (Excellent, Good, Satisfactory, Poor, or Failing) and the percentage range that grade typically covers.
- Check the conversion chart. The full A+ to F chart appears below the result, with your selected grade highlighted so you can see exactly where it sits.
Want to take it further? If you have several courses and want an overall GPA, try our final grade calculator or the middle school GPA calculator.
What Is the Grade-to-GPA Conversion?
The grade-to-GPA conversion is the standard mapping that turns letter grades into the numbers behind a GPA. On the most common scale — the unweighted 4.0 scale — an A is worth 4.0 grade points, a B is worth 3.0, a C is worth 2.0, a D is worth 1.0, and an F is worth 0. Plus and minus grades sit between these anchor points: an A− is 3.7, a B+ is 3.3, and so on.
Schools use this conversion as the first step in every GPA calculation. Each course grade is converted to grade points, those points are weighted by credit hours, and the total is divided by total credits. Without this conversion step, letter grades from different courses could never be combined into a single average.
Two things are worth knowing. First, most U.S. schools treat A+ as 4.0 — the top of the scale — even though a few schools give it 4.3 or 4.33 on a “weighted” variant. Second, the percentage cutoffs are not identical everywhere: one school may set A− at 90–92% while another uses 90–93%. The values in this tool reflect the most widely used convention, which covers the vast majority of high schools and colleges.
The Conversion Table
Here is the full chart this calculator uses. It matches the unweighted 4.0 scale found in most U.S. grading policies:
| Letter Grade | GPA | Percentage Range |
|---|---|---|
| A+ | 4.0 | 97–100% |
| A | 4.0 | 93–96% |
| A− | 3.7 | 90–92% |
| B+ | 3.3 | 87–89% |
| B | 3.0 | 83–86% |
| B− | 2.7 | 80–82% |
| C+ | 2.3 | 77–79% |
| C | 2.0 | 73–76% |
| C− | 1.7 | 70–72% |
| D+ | 1.3 | 67–69% |
| D | 1.0 | 63–66% |
| D− | 0.7 | 60–62% |
| F | 0.0 | 0–59% |
Notice the pattern: each full letter step is worth roughly 1.0 grade points, and plus/minus grades add or subtract 0.3. That 0.3 gap is why a B+ (3.3) pulls a GPA noticeably above a B (3.0) — and why an A− (3.7) is the single most common reason a transcript shows 3.85 instead of 4.0.
If your grades are still in percentage form, convert them first with our percentage calculator or the 15 out of 20 grade converter, then look up the letter equivalent here.
From a Single Grade to a Full GPA
Converting one grade is only step one. Here’s how schools turn a whole transcript into a single GPA:
- Convert each letter grade to grade points using the chart above.
- Multiply each course’s grade points by its credit hours. (A 4-credit course counts more than a 2-credit one.)
- Add up all those numbers to get total quality points.
- Divide by total credit hours. The result is the GPA.
A quick example: two courses, a 3-credit B (3.0) and a 4-credit A− (3.7). That’s (3 × 3.0) + (4 × 3.7) = 9 + 14.8 = 23.8 quality points, divided by 7 credits = 3.4 GPA. If you’d rather skip the arithmetic, the final grade calculator does the whole weighted calculation for you.
Tips
- Remember that A+ is usually capped at 4.0. Some schools show 4.3 or 4.33 for A+ on a weighted scale, but the standard unweighted conversion used for most GPAs tops out at 4.0.
- Use this converter before calculating semester GPA. Convert each letter grade to its points first, multiply by credit hours, then average — that’s the correct order of operations.
- Check your school’s cutoff table. If your school’s syllabus says an A starts at 94% instead of 93%, use your school’s ranges for official work and this tool for quick checks.
- Don’t mix weighted and unweighted values. If your school adds extra points for honors or AP classes, that’s a weighted scale — use weighted logic instead of these plain values.
- Screenshot the highlighted chart. When explaining a grade to a student or parent, the visual highlight makes the 0.3 plus/minus gaps easy to grasp at a glance.
The bottom line: converting a letter grade to GPA is one of those small tasks that should take seconds — and with the right chart, it does. The 4.0 scale is simple once you see the pattern: full letters at whole numbers, pluses and minuses at 0.3 steps, and A+ capped at 4.0. Keep this converter bookmarked, and the next time a B− or A− lands on a transcript, you’ll know exactly what it’s worth. Ready to combine several courses into one average? Head to the final grade calculator and finish the job.
More Grade Calculators
What Is a Good GPA?
A GPA is easiest to judge when you translate it back into letter grades:
| GPA | Letter-grade average | How it reads |
|---|---|---|
| 3.7 to 4.0 | A− to A | Excellent — competitive almost everywhere |
| 3.5 to 3.6 | B+ to A− | Strong — honors and many scholarships |
| 3.0 to 3.4 | B to B+ | Solid — meets most minimum requirements |
| Below 3.0 | Below B | Workable, but worth improving where you can |
The 3.0 line matters most: it is the most common minimum for good academic standing, graduation and many scholarships. A 3.5 is a genuinely strong record, and 3.7 or above is excellent. Keep one caveat in mind — colleges read the number alongside course rigor, so a 3.4 earned in AP and honors classes often impresses more than a higher GPA earned without them.
Frequently Asked Questions
What is a B+ in GPA?
A B+ converts to 3.3 on the standard 4.0 scale. It typically covers a percentage range of about 87–89% and sits exactly 0.3 points above a B (3.0).
Is A+ a 4.0 or a 4.3 GPA?
On the standard unweighted 4.0 scale, an A+ is worth 4.0 — the scale tops out at 4.0. Some schools use a weighted scale where A+ can be 4.3 or 4.33, usually for honors or AP courses. Always check your own school’s policy.
What GPA is a C?
A C converts to 2.0 on the 4.0 scale, which is the midpoint of the scale and generally represents average performance. A C− is 1.7 and a C+ is 2.3.
How do plus and minus grades change GPA?
Each plus adds 0.3 grade points above the base letter, and each minus subtracts 0.3. So a B+ is 3.3, a B is 3.0, and a B− is 2.7. Those fractions add up fast across a semester.
Does an F count as 0 in a GPA?
Yes. An F is worth 0.0 grade points, and because most GPA formulas divide by total attempted credits, an F drags an average down more than most students expect. Retaking the course is the usual way to repair it.
Do all schools use the same conversion?
No — this chart reflects the most common U.S. convention, but individual schools can shift the percentage cutoffs or use different scales (5.0 weighted, 4.3, percentage-based, or entirely different systems abroad). For official records, always use your school’s published scale.
Is a 3.5 GPA good?
Yes. A 3.5 is a B+ to A− average and sits comfortably above the typical average of about 3.0. It is competitive for many colleges, honors programs and scholarships — especially when it comes with challenging courses.
How do I convert a percentage grade into GPA points?
First match the percentage to a letter grade using the conversion table — for example, 88 percent is a B+. Then convert the letter to points: a B+ is 3.3. For an overall GPA, multiply each course’s points by its credit hours, add the results and divide by total credits.