GPA Calculator
Work out your grade point average from your course grades and credit hours.
Results update as you type.
About this calculator
A GPA calculator turns your letter grades and the credit hours of each course into a grade point average — the single number schools, scholarships and honor societies use to summarise academic performance. On the standard unweighted US 4.0 scale each grade is converted to its point value (A = 4.0, B = 3.0, C = 2.0, and so on), multiplied by the course credits to give quality points, and the total quality points are divided by the total credit hours.
Worked example: three courses — an A (4.0) worth 3 credits, a B (3.0) worth 4 credits and an A- (3.7) worth 3 credits — give 4.0×3 + 3.0×4 + 3.7×3 = 12 + 12 + 11.1 = 35.1 quality points across 10 credits, for a GPA of 35.1 ÷ 10 = 3.51. Because the four-credit B carries more weight than the three-credit courses, it pulls the average down more than a three-credit B would.
Switch to the weighted scale to add the usual honors (+0.5) and AP/IB (+1.0) bonuses, which lets a GPA rise above 4.0 for a demanding course load. Up to eight courses are supported — the extra rows and course-type selectors live under advanced options — and a per-course breakdown table shows each class’s quality points. Students use it to project a term or cumulative GPA, check what they need to reach a target, and compare weighted against unweighted for college applications.
Frequently asked questions
How is GPA calculated?
Multiply each course grade point (A = 4.0, B = 3.0, C = 2.0, and so on) by the course credit hours to get quality points, add those up across all courses, and divide by the total credit hours. A course worth more credits pulls the average more strongly.
What is the difference between weighted and unweighted GPA?
An unweighted GPA caps every course at 4.0. A weighted GPA adds a bonus for harder classes — typically +0.5 for honors and +1.0 for AP or IB — so a transcript full of advanced courses can exceed 4.0. Pick the weighted scale and set each course’s type to apply those bonuses; the tool still reports the unweighted GPA alongside it.
Can I add more than three courses?
Yes — open advanced options to reveal courses four through eight plus their course-type selectors. Leave a grade set to “skip” to exclude that row, and it will not count toward your credits or average.
What is a good GPA?
On the 4.0 scale a 3.0 is a solid B average, 3.5 and up is strong and competitive for many colleges, and 3.7–4.0 is honors territory. What counts as “good” depends on the school and programme, but most scholarships and honor societies look for at least a 3.0 to 3.5 cumulative GPA.
Can a GPA be higher than 4.0?
Only on a weighted scale. Unweighted GPAs are capped at 4.0 because an A is worth 4.0 points. Weighted GPAs add +0.5 for honors and +1.0 for AP or IB courses, so a transcript of top grades in advanced classes can reach 4.5 or even 5.0.
How do I calculate my cumulative GPA across semesters?
Enter every course from all terms with its grade and credits, or combine each term by treating a whole semester as one “course” whose grade point is that term’s GPA and whose credits are the term’s total credits. Either way the calculator weights each by credit hours to give the overall cumulative average.
Do failing or skipped courses affect my GPA?
An F counts as 0.0 quality points but its credits still divide into the total, so it lowers your GPA sharply. To leave a course out entirely — a pass/fail class, say — set its grade to “skip”; it is then ignored and its credits do not count.
API — use this calculator from code
Call this calculator as a free JSON endpoint — no key required. Send the field values below as query parameters or JSON. Read the full API docs →
Endpoint
GET https://calculator.free/api/v1/gpa/curl
curl "https://calculator.free/api/v1/gpa/?scale=unweighted&g1=4.0&c1=3&g2=3.0&c2=3&g3=3.7&c3=3"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/gpa/?" + new URLSearchParams({
"scale": "unweighted",
"g1": "4.0",
"c1": "3",
"g2": "3.0",
"c2": "3",
"g3": "3.7",
"c3": "3"
}));
const data = await r.json();
console.log(data.results);Results are estimates for general guidance only, not financial, medical or tax advice.