Calculate a GPA on the 4.0 scale

Each letter carries a point value: A is 4, B is 3, C is 2, D is 1 and F is 0, with 3.7 for an A− and 3.3 for a B+. Those points are multiplied by the course's credits, added up, then divided by the total credits. It is a weighted average: an A in a 4-credit course counts four times as much as an A in a 1-credit course.

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

A = 4.0 ; A− = 3.7 ; B+ = 3.3 ; B = 3.0 ; F = 0

The 4.0 scale is a US convention, not an international standard. The letter-to-point mapping varies: some schools ignore plus and minus grades, some cap A+ at 4.0 as here, others go to 4.3. There is no official conversion from a percentage or a foreign grading system: each university applies its own equivalence table.

Courses

One line per course, formatted as letter;credits. Letters from A+ to F are accepted. Omit the credits and the course counts as 1.

Assumptions

• A+ and A both count as 4.0, with no bonus above that.
• A course with no credits entered counts as 1 credit.
• No course is excluded from the average.

Limits

• No pass/fail courses, retakes or replaced grades.
• No honors or AP bonus: use the weighted GPA for that.
• No automatic conversion from a percentage system.

A GPA of 3.5 reads as between a B+ and an A− on average. What matters for an application is the receiving institution's own table, not this one: many universities recompute an applicant's GPA from the original transcript. Use this figure to understand where you stand, and the official transcript to apply.

• Averaging the letters without weighting by credits.

  A 4-credit course counts four times as much as a 1-credit course.

• Converting a percentage by dividing by 25.

  There is no official conversion. 87% is not mechanically 3.48.

• Counting an A+ as 4.3.

  This page caps at 4.0. Some schools go higher: check your handbook.

• Cumulative GPAA 18-credit fall semester outweighs a 12-credit summer. The cumulative figure is therefore not the plain average of your term GPAs.
• Weighted GPAHarder courses earn extra points: +0.5 for honors, +1.0 for AP. The resulting GPA can therefore go above 4.0.
• Course grade by categoryOne line per category, with its score and its syllabus weight. The result is normalised, and the page tells you if weight is still missing.
• Weighted averageEach line is a value and its coefficient. The mean is the sum of (value × weight) divided by the sum of weights — not the average of the values then of the weights.

Written by Rédaction HexaCalc (editorial team). Content last updated: August 25, 2026. No third-party medical or financial review is claimed.

• Les Éléments, Livre I (théorème de Pythagore) et Livre VII (algorithme d’Euclide) — Tradition mathématique euclidienne