🎓 GPA Calculator

What is GPA Calculator?

This GPA calculator computes your weighted grade point average on the standard US 4.0 scale. Add each course with its credit hours and letter grade (A through F, with plus/minus modifiers), and the calculator multiplies grade points by credits, sums everything, and divides by total credits to give you a GPA to two decimal places. Works for a single semester, a full academic year, or a cumulative multi-year GPA — just keep adding courses. Courses save locally in your browser so you don't lose your list if you come back tomorrow; nothing is sent to a server.

How to Use

1. Add your courses with name, credits, and letter grade
2. Remove courses with the × button
3. See your GPA update in real-time
4. The color scale shows where you fall

How GPA is calculated (with a worked example)

GPA is a credit-weighted average of your grades, not a simple mean. Each letter grade maps to grade points on a 4.0 scale, and each course contributes proportional to its credit hours. The formula: GPA = Σ(grade points × credits) ÷ Σ(credits).

Example semester with four courses:

GPA = 48.7 ÷ 14 = 3.48. Note that the 4-credit Calculus course weighs more than the 3-credit Spanish course, even though the Spanish grade was higher. This is why a single bad grade in a high-credit course (like a lab or capstone) hurts more than a bad grade in a 1-credit elective.

Plus/minus grades, and why scales differ

The standard US 4.0 scale has two common variations:

• Unweighted 4.0 — A = 4.0, B = 3.0, C = 2.0, D = 1.0, F = 0. No plus/minus distinction. Used by some high schools.
• Plus/minus 4.0 — A+ and A = 4.0, A− = 3.7, B+ = 3.3, B = 3.0, B− = 2.7, and so on. Used by most US colleges.
• Weighted 4.0+ — Honors and AP/IB courses get a boost (e.g., 5.0 for A in AP), so weighted high-school GPAs can exceed 4.0. College admissions usually recalculate to an unweighted 4.0.

Some schools use a 4.3 or even 5.0 scale where A+ is worth more than A. Outside the US, scales differ entirely — the UK, India, and most of Europe use percentage or class-based systems that don't map cleanly onto a 4.0. If you're applying to US grad schools with a non-US transcript, services like WES or ECE do the conversion officially.

Raising a low cumulative GPA — the math is discouraging

Here's the uncomfortable arithmetic: the more credits you already have, the harder it is to move your cumulative GPA. Say you've completed 60 credits with a 2.5 GPA and want to graduate at 3.0. You need 150 total quality points (3.0 × 50 remaining credits after 60 already done, doesn't quite work — let's redo).

Current quality points: 60 × 2.5 = 150. To hit a cumulative 3.0 after another 60 credits (120 total), you need 360 quality points total. That means earning 210 quality points across those next 60 credits — a 3.5 average for every course you take for the rest of your degree. No room for a bad semester.

Implication: GPA repair is much easier earlier. A 3.0-seeking student with 30 credits at 2.5 only needs a 3.17 average for the next 30 credits. Use this calculator to model scenarios — add your remaining expected courses, try different grade scenarios, and see what's actually achievable.

Frequently Asked Questions

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