Weighted GPA from credit hours
October 2, 2026
Credit-weighted, not course-weighted
GPA is usually Σ(grade points × credits) ÷ Σ(credits). A 4-credit A counts more than a 1-credit A. The GPA Calculator accepts comma-separated letters and matching credits.
Letter maps differ
A common unweighted map is A=4, B=3, C=2, D=1, F=0. Many schools use plus/minus values (B+ = 3.3, and so on). If your transcript uses plus/minus, convert each course to the official points before averaging, or treat this tool as an estimate on whole letters only.
Worked example
An A in a 3-credit course and a B in a 3-credit course: (4×3 + 3×3) ÷ 6 = 3.5.
Pass/fail and transfers
Omit pass/fail courses that carry no points unless your school assigns points. Transfer credit policies vary; follow the registrar’s rule for whether those grades enter your institutional GPA.
Linking to percent grades
Use Grade Percentage for a single exam or category. Use Final Grade when you still have a weighted final left. Convert the finished course percent to a letter with your syllabus scale, then enter that letter into the GPA tool with the course credits.
What this is not
It is not an official transcript. Registrars compute GPA with institutional rules MeretAI does not attempt to reproduce in full. When you need study planning rather than GPA math, open the Study Time Calculator.
Why the worked example matters
The worked numbers on this page use the same relationships as the on-site calculators and their fixtures. If your result disagrees with the example when you enter the same inputs, email support@meretai.com with the tool name and the numbers you used.
Checklist before you buy or rely on the number
Write down the raw inputs you used, including units. Re-run the calculator once with those exact figures. If a store pack size or a syllabus rule forces a round-up, round up rather than chasing a perfect match. Keep a note of the date you calculated so you can compare later when prices, labels, or grades change.
A note on units
Keep units consistent inside one calculation. Mixing feet with metres, or cups with grams without a density, is the usual source of bad results. When a label uses a different unit, convert once with the Unit Converter and then return to the specialty calculator.
Limits
These figures are planning aids. Confirm product labels, syllabus rules, employer policy, or veterinary advice when a decision depends on the number.