GPA / Letter Grade Converter
GPA to letter grade reference (4.0 scale)
| GPA | Letter Grade | Percentage Band |
|---|---|---|
| 4.0* | A / A+ | 93-100% |
| 3.7 | A- | 90-92% |
| 3.3 | B+ | 87-89% |
| 3.0 | B | 83-86% |
| 2.7 | B- | 80-82% |
| 2.3 | C+ | 77-79% |
| 2.0 | C | 73-76% |
| 1.7 | C- | 70-72% |
| 1.3 | D+ | 67-69% |
| 1.0 | D | 63-66% |
| 0.7 | D- | 60-62% |
| 0.0 | F | Below 60% |
* A+ GPA = 4.0 at most US colleges; a minority award 4.33.
How to Convert GPA to Letter Grade on the 4.0 Scale
The conversion from GPA to letter grade is a band lookup, not an equation. Each letter grade owns a fixed GPA value on the standard US 4.0 scale: A = 4.0, A- = 3.7, B+ = 3.3, B = 3.0, B- = 2.7, and the plus/minus pattern continues down to F = 0.0. To convert a GPA to a letter grade, find the band the GPA value falls into and read the matching letter. A 3.5 GPA sits between B+ (3.3) and A- (3.7), so most registrars list it as B+ until the value reaches the A- floor. The converter above runs this lookup live as you type.
GPA to Letter Grade Formula
Letter Grade = lookup(GPA, 4.0 scale band table)
- GPA = your value on the 0.0 to 4.0 scale (or up to 4.33 if A+ is awarded separately)
- Each letter grade owns a fixed GPA value with no decimals between letters
- Result = the letter grade whose value is closest to and not above your GPA
Plus/Minus Boundaries (A-, B+, and Beyond)
Plus/minus grading splits each letter grade into three tiers, raising or lowering the GPA value by 0.3 (with two exceptions). A-minus is 3.7 instead of a flat A's 4.0; B-plus is 3.3, B is 3.0, B-minus is 2.7. The exceptions: A and A+ both sit at 4.0 on the standard 4.0 scale (only the 4.33 scale separates them), and there is no F+ or F-, F is always 0.0. About 60% of US four-year colleges use plus/minus grading according to AACRAO survey data; the rest use flat A-F. If your transcript shows A- and B+ grades, your institution uses plus/minus and the GPA conversion picks up the 0.3 increments.
Letter Grade to GPA Conversion (the Reverse)
To convert a letter grade to GPA, look up the letter's fixed value: 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. Switch the converter above to "Letter to GPA" mode and pick the letter from the dropdown for an instant lookup. This direction matters most when calculating cumulative GPA from a transcript that lists only letter grades, you need each letter's GPA value before you can multiply by credit hours and average across the term. Convert letter grades to GPA one course at a time, then aggregate.
Calculate GPA with Letter Grades
To calculate GPA with letter grades for multiple courses, follow four steps. First, convert each letter to its 4.0-scale point value using the table above. Second, multiply each point value by the credit hours for that course; the result is called quality points. Third, sum quality points across every course on the term or transcript. Fourth, divide total quality points by total credit hours. The result is your GPA. The full GPA calculator handles this end to end: use the GPA calculator to enter all your courses and see the cumulative average, or apply the formula manually using the FormulaBox below. Calculating GPA with letter grades works the same way whether your transcript shows raw letters or a list of letter grades converted to GPA values, the math averages weighted GPA points across credit hours.
Letter Grade to GPA Calculator Mode
Switch the bidirectional widget above into letter grade to gpa calculator mode to map any single letter back to its GPA value. The dropdown lists every plus and minus tier on the active scale; pick a letter and the result panel shows the GPA, the percentage band, and the academic context. The same letter grade gpa calculator logic powers the full GPA calculator: that tool stacks the letter grade to GPA conversion across multiple courses and weights by credit hours. If you only need a single-letter lookup, the converter on this page handles it; for a full transcript, use the gpa calculator from letter grades pattern with the dedicated tool.
Find GPA with Letter Grades on a Mixed Transcript
To find GPA with letter grades on a mixed transcript that combines plus/minus and flat letters, normalize first. Convert every flat letter (A, B, C) to its 4.0-scale value, convert every plus/minus letter (A-, B+, C-) to its 0.3-shifted value, then run the standard formula. Determining GPA from letter grades is straightforward once normalization is complete; the only common error is treating an A and an A+ as different values on the 4.0 scale (they are not, both are 4.0 unless your school uses the 4.33 scale).
Convert Letter Grades to GPA
Convert letter grades to GPA at scale by feeding the full course list through the GPA calculator from letter grades pattern: enter each course's letter, the credit hours, and the optional course name. The tool runs the same lookup table powering the converter on this page, then weights every entry by credits. A gpa calculator with letter grades is the right tool when you have more than two or three courses; doing it manually works for one or two but compounds rounding errors past that. Use a dedicated gpa calculator from letter grades for any cumulative calculation, and reserve the single-row converter on this page for spot lookups.
Letter Grades and GPA on Different Scales
Letter grades and GPA values map differently across scales. On the 4.0 scale, the highest letter grades for GPA computation cap at 4.0 (A and A+ both equal 4.0). On the 4.33 scale, A+ earns its own tier above A. The percentage band column stays the same across both scales, only the GPA value column shifts at the top tier. Letter grades into GPA conversion is a deterministic lookup; there is no judgment involved once the scale is fixed.
Grade Conversion Chart and Quick Reference
The grade conversion chart in this page lists every standard 4.0-scale entry. Use it for a fast grade to letter check or for grade to percentage spot conversions. The chart converts grades into GPA values and back; the same data is used by the calculate gpa using letter grades pattern in the GPA calculator. Conversion of grades from letter to GPA always uses these fixed values: there is no school-by-school variation in the underlying point assignments, only in whether plus/minus is awarded and whether the scale tops out at 4.0 or 4.33.
- Grade Points = the GPA value for each course letter grade (A=4.0, A-=3.7, B+=3.3, B=3.0, etc.)
- Credit Hours = the credit weight of each course (typically 3 or 4 for college; 1 for high school)
- GPA = weighted average across all courses, expressed on the 0.0 to 4.0 scale
GPA to Letter Grade Conversion Table
The table below covers every standard value on the 4.0 scale plus the 4.33 A+ tier used by a minority of US colleges. The conversion of grades runs in both directions: read across to convert GPA to letter grade and percentage band, or read up the GPA column to convert a letter grade back to its 4.0-scale value.
| GPA | Letter Grade | Percentage Band | Quality Points |
|---|---|---|---|
| 4.33 | A+ (4.33 scale) | 97-100% | 4.33 |
| 4.0* | A / A+ (4.0 scale) | 93-100% | 4.0 |
| 3.7 | A- | 90-92% | 3.7 |
| 3.3 | B+ | 87-89% | 3.3 |
| 3.0 | B | 83-86% | 3.0 |
| 2.7 | B- | 80-82% | 2.7 |
| 2.3 | C+ | 77-79% | 2.3 |
| 2.0 | C | 73-76% | 2.0 |
| 1.7 | C- | 70-72% | 1.7 |
| 1.3 | D+ | 67-69% | 1.3 |
| 1.0 | D | 63-66% | 1.0 |
| 0.7 | D- | 60-62% | 0.7 |
| 0.0 | F | Below 60% | 0.0 |
* A+ GPA = 4.0 at most US colleges; a minority award 4.33.
Common GPA Values and Their Letter Grades
Students search most often for the conversion at common round-number GPA values. A 3.5 GPA reads as B+ on a transcript, sits between B+ (3.3) and A- (3.7), and matches the typical Dean's List threshold. A 3.0 GPA is a flat B and the standard graduate school admission floor. A 2.5 GPA falls in the C+ band (2.3) under strict cutoff logic, indicating a B- average overall but reported as the lower of the two adjacent letters. A 2.0 GPA is a flat C and the standard degree-completion minimum at most US colleges.
3.7 and 3.8 GPA Letter Grades
A 3.7 GPA is exactly A-, the floor of the A- band. A 3.8 GPA also reads as A- on a single-course transcript, since the next tier above (A) doesn't arrive until 4.0 on the 4.0 scale. Both values reflect mostly As with one or two A-minuses pulling the average down a tenth or two. For competitive graduate school applications in fields like medicine and law, the 3.7 to 3.9 range is the typical median for admitted students at top programs, per AAMC and ABA admissions data.
3.3 and 3.4 GPA Letter Grades
A 3.3 GPA is exactly B+. A 3.4 GPA also reads as B+ since the A- band doesn't begin until 3.7. Cumulative 3.3 to 3.4 is a strong undergraduate range, above the 3.0 graduate school floor at most master's programs and competitive for many merit scholarships. The conversion of a letter grade back from this range gives B+ for any cumulative GPA from 3.3 up to (but not including) 3.7.
Weighted vs Unweighted GPA on the Letter-Grade Scale
Weighted GPA above 4.0 does not map cleanly to a letter grade. A 4.5 weighted GPA from a high school transcript reflects As earned in AP, IB, or honors courses where each grade tier is bumped by a full point. The underlying letter grade for those courses is still in the A range (90-100%), but the GPA value sits above the 4.0 ceiling. Most US colleges recalculate a standardized unweighted GPA internally during admissions review for exactly this reason: a 4.5 weighted from one school isn't directly comparable to a 4.5 weighted from another. To convert a weighted GPA to a letter grade, drop the weighting first (subtract the bonus point), then look up the letter on the 4.0 table.
How a Weighted 4.5 GPA Reads as a Letter
A weighted 4.5 GPA on a 5.0 scale corresponds roughly to an A average in advanced coursework (the unweighted equivalent is around 3.5, which itself reads as B+ on the 4.0 letter scale). Admissions evaluators read the weighted value alongside the course rigor, not as a single letter grade. Use the GPA to percentage converter if you need the percentage equivalent of a weighted GPA, or the 4.0 GPA scale reference for a side-by-side comparison of weighted and unweighted point values.
Tips for GPA to Letter Grade Accuracy
Three details affect accuracy when reading a GPA back as a letter grade. First, strict cutoff logic is the standard: a 3.69 reads as B+ (not A-) because the A- floor is 3.7, not 3.65. A small number of registrars round to the nearest band, so verify with your school if a boundary case affects honors classification or scholarship eligibility. Second, plus/minus is institution-specific. About 40% of US four-year colleges still use flat A-F grading without plus or minus modifiers, in which case 3.5 GPA does not reduce to B+ on a transcript, the school records the underlying course grade as either A or B and the 3.5 reflects an average across courses, not a single letter. Third, weighted GPAs from high school require unweighting before letter conversion, and international transcripts (UK, ECTS, CGPA) need credential evaluation rather than a direct lookup.
Sources: AACRAO grading and transcript standards; College Board 4.0-scale conversion guidelines. Always verify the exact conversion with your school's registrar; grading policies vary by institution. Last verified: May 2026.