GPA Calculator

About the GPA Calculator

Your grade point average (GPA) is the credit-weighted average of your course grades on a 4.0 scale: each grade becomes grade points (A = 4, B = 3 …), is multiplied by the course’s credits, and the total is divided by all the credits. This calculator does that for a term from letter grades or percentages, shows every step, and — if you add the GPA and credits from your transcript — gives your new cumulative GPA.

Pick the scale your school or application service uses: the College Board A–F chart, the plus/minus weights AMCAS uses (A+ = 4.0, A− = 3.7, B+ = 3.3 …) or the LSAC table, where an A+ counts 4.33. High-school students can switch on weighting to add the usual Honors (+0.5) and AP/IB (+1.0) bonus; both values can be changed because every school sets its own.

How GPA is calculated

GPA = Σ(grade points × credits) ÷ Σ credits.

The product for one course — grade points × credits — is its quality points (also called honor or credit points). A 3-credit A− on the plus/minus scale earns 3.7 × 3 = 11.1 quality points. Add the quality points of every graded course and divide by the credits of those courses.

The result is shown to two decimal places, rounded half up (3.345 becomes 3.35); the working table keeps the unrounded figures, and your school may round or truncate differently. Courses graded P (pass) or W (withdrawn) are listed but left out of both totals, and so is any course with 0 credits.

The three scales

College Board (A–F): A 90–100 = 4.0, B 80–89 = 3.0, C 70–79 = 2.0, D 66–69 = 1.0, E/F below 65 = 0.0. The chart is a rough guide and leaves a score of exactly 65 out; this calculator counts it as a D.

Plus/minus (AMCAS): A+ and 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. Percentages: A 93–100, A− 90–92, B+ 87–89, B 83–86, B− 80–82, C+ 77–79, C 73–76, C− 70–72, D+ 67–69, D 63–66, D− 60–62, F below 60. Half-step grades AB 3.5, BC 2.5, CD 1.5 and DE 0.5 are accepted too.

A+ = 4.33 (LSAC): A+ 4.33 (98–100), A 4.00 (93–97), A− 3.67 (90–92), B+ 3.33 (87–89), B 3.00 (83–86), B− 2.67 (80–82), C+ 2.33 (77–79), C 2.00 (73–76), C− 1.67 (70–72), D+ 1.33 (67–69), D 1.00 (63–66), D− 0.67 (60–62), E/F 0.00 (below 60); AB 3.50, BC 2.50, CD 1.50, DE/DF 0.50.

Weighted and unweighted GPA

An unweighted GPA uses the scale as it is, so 4.0 (or 4.33) is the top. A weighted GPA adds a bonus for harder classes — commonly +0.5 for Honors and +1.0 for AP or IB — so an A in an AP class counts 5.0. The bonus values here are only a starting point: set them to your school’s policy. No bonus is added to an F.

Colleges often recalculate. College Board notes that they may count only core academic classes, remove or rescale the weighting your school added, or use their own method — which is why many ask you to report your courses and grades yourself.

Pass/fail, withdrawals, repeats and quarter hours

• P / S / CR (passed pass/fail course) and W / I (withdrawn, incomplete) are not counted here. Application services have their own rules: LSAC, for example, counts a failed pass/fail course as 0.00 and leaves out withdrawals only when the school treats them as non-punitive.
• Repeated courses: add every attempt as its own row if your school or the service counts them all — LSAC includes every attempt whose units and grade appear on the transcript.
• Quarter hours: to compare with semester-based GPAs, LSAC multiplies quarter hours by 0.67 to get semester hours (the AMCAS guide has a similar table: 4 quarter hours = 2.7 semester hours).

Sources

• College Board BigFuture, How to Convert Your GPA to a 4.0 Scale — grade chart, the A, A, A, B, C example and the notes on weighting
• AAMC, AMCAS Grade Conversion Guide — plus/minus weights, half-step grades and percentage bands
• LSAC, transcript summarization and grade conversion table — A+ = 4.33 table, repeated courses, withdrawals and quarter hours

Limitations

• Your school’s registrar calculates the official GPA. Schools differ in rounding, in which courses count (PE, electives, transfer credit) and in how repeated or forgiven grades are treated.
• Percentages are converted with the chosen scale’s bands. If your school uses other cut-offs, type the letter grade from your report card instead.
• Weighting bonuses vary from school to school, and colleges often recalculate weighted GPAs with their own rules.
• Up to 100 courses per term, 0–30 credits each.

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