GPA Calculator

Different schools and countries use different scales. Use this to translate between systems when applying to college, grad school, or jobs abroad.

Always verify with your school's published grade-to-points table. Some schools use modified scales (e.g., 95+ for A, no A+, or A+ = 4.33).

Grade Point Average (GPA) is the credit-weighted average of your letter grades converted to point values. It is the single most-quoted academic number in US education - used for college admissions, scholarships, internship applications, honor societies, and grad school decisions.

The math is simple but multi-step: each grade has a point value, each course has a credit weight, and your GPA is a credit-weighted average. A 3-credit A and a 1-credit C average out closer to the A than to the C because the A is worth more credits.

GPA = Σ (grade points × credits) / Σ credits

Walk through it course by course: multiply each grade's point value by its credit hours, sum those products, then divide by the total credits. The single most common mistake is averaging GPAs instead of credit-weighting them.

Worked example

Three courses, one semester:

• Calculus I: A (4.0) × 4 credits = 16.0 quality points
• English 101: B+ (3.3) × 3 credits = 9.9 quality points
• Art appreciation: A- (3.7) × 2 credits = 7.4 quality points
• Total: 33.3 quality points / 9 credits = 3.70 GPA

High schools that offer Advanced Placement (AP), International Baccalaureate (IB), or Honors classes often use a weighted GPA scale. The system rewards harder courses with extra points:

• Regular course: A = 4.0
• Honors course: A = 4.5 (+0.5 bonus)
• AP or IB course: A = 5.0 (+1.0 bonus)

A weighted GPA can exceed 4.0 - students at academically competitive high schools commonly graduate with 4.3-4.8 weighted GPAs. Unweighted GPA caps at 4.0 regardless of course difficulty.

Cumulative GPA is your GPA across all completed semesters. The calculator handles this when you add multiple semesters: it sums all quality points across every course and divides by total credits across every semester.

A common mistake: averaging semester GPAs equally. A 4.0 semester (12 credits) and a 3.0 semester (18 credits) does NOT average to 3.5. The credit-weighted average is (4.0 × 12 + 3.0 × 18) / 30 = 3.4. The bigger semester pulls the average more.

How do I improve my GPA?

Your existing credit total dilutes any single new grade. If you have 60 credits at 3.0 and you take 12 more credits at 4.0, your new cumulative GPA is (60 × 3.0 + 12 × 4.0) / 72 = 3.17. To move from 3.0 to 3.5, you'd need 60 more credits of 4.0 work.

What is a good college GPA?

Highly subjective. 3.0+ is the typical employer floor. 3.5+ is common for grad school applications. 3.7+ for selective grad programs. 3.9+ for top-tier programs. Bear in mind: GPA is one signal among many (test scores, extracurriculars, recommendations).

Should pass/fail courses count?

Usually no - they're excluded from GPA calculation because they don't have a numerical grade. Some schools count "Pass" as a C for major requirements but exclude it from GPA. Check your school's policy.

What about transfer credits?

Policies vary. Many US universities accept transfer credits (the course counts toward your degree) but exclude the grade from your GPA calculation. So a transfer A doesn't help your GPA, but a transfer F doesn't hurt it either. Check the registrar.

Is GPA the same as a percentage?

No, but they correlate. US schools generally use 90+ = A, 80+ = B, 70+ = C, 60+ = D, <60 = F. A 3.5 GPA at one school might map to 88% average; at a school with strict grading, 84%.

Can my GPA go above 4.0?

Only on weighted scales. On a 4.0 unweighted scale, no - A and A+ both count as 4.0. On a 4.3 scale, A+ counts as 4.3 so an all-A+ semester gives you 4.3. On a 5.0 weighted scale, AP and IB courses can push you above 4.0.

On an unweighted 4.0 scale, an A is worth 4.0 and the ceiling is 4.0. On a weighted 5.0 scale, honors and AP or IB classes add a full point, so an A in one of those classes is worth 5.0. This is why a 5.0 GPA calculator asks whether each class is regular, honors, or AP.

The +1.0 bonus shown here is the most common honors/AP weighting. Some schools add only +0.5 for honors and reserve the full +1.0 for AP or IB. A failing grade stays at 0.0 on both scales.

An unweighted GPA treats every class the same: an A is 4.0 whether it is regular gym or AP Calculus, and the highest possible GPA is 4.0. A weighted GPA gives extra points for harder classes, so honors, AP, and IB courses are worth more. On the common 5.0 weighted scale an A in an AP or IB class is worth 5.0, which is how a weighted GPA can exceed 4.0 and top out near 5.0.

A perfect 5.0 GPA means straight A grades in a schedule made entirely of honors, AP, or IB classes. Most students land somewhere between their unweighted GPA and the 5.0 ceiling because a normal schedule mixes weighted and regular classes. If you take zero weighted classes, your weighted and unweighted GPA are identical and both cap at 4.0.

GPA is a credit-weighted average, not a plain average of your grades. To calculate it by hand, multiply each grade's point value by that class's credit hours, add up those products, then divide by the total credit hours. On a weighted 5.0 scale you use the weighted point value (for example 5.0 for an A in an AP class) in the same formula.

GPA = (grade points × credits, summed) ÷ (total credits)

Worked example on a weighted 5.0 scale, four classes over one semester:

• AP Biology: A weighted 5.0 × 1 credit = 5.0
• Honors English: B+ weighted 4.3 × 1 credit = 4.3
• Regular Algebra: A unweighted 4.0 × 1 credit = 4.0
• Regular History: B unweighted 3.0 × 1 credit = 3.0
• Total: 16.3 points ÷ 4 credits = 4.08 weighted GPA

The same classes on an unweighted 4.0 scale would be (4.0 + 3.3 + 4.0 + 3.0) ÷ 4 = 3.58. The gap between 4.08 and 3.58 is the extra credit the weighted scale gives for taking AP and honors classes.

What is a 5.0 GPA?

A 5.0 GPA is a perfect score on a weighted 5.0 scale. It means you earned an A in every class and every one of those classes was an honors, AP, or IB course that carries the full +1.0 weighting. It is the highest GPA possible on that scale. Because a normal schedule mixes weighted and regular classes, an exact 5.0 is rare, and most strong students sit somewhere in the 4.0 to 5.0 range.

How is weighted GPA calculated?

Convert each letter grade to its weighted point value first: on the common scale a regular class uses the 4.0 values, an honors or AP or IB class adds a full point so an A becomes 5.0. Multiply each weighted value by the class credit hours, sum the results, and divide by total credits. In short, weighted GPA = (weighted points × credits, summed) ÷ (total credits). The only difference from an unweighted GPA is which point value you start with.

What is a good GPA?

It depends on the scale and the goal. On an unweighted 4.0 scale, 3.0 is a solid B average, 3.5 and up is strong, and 3.7 or higher is competitive for selective colleges. On a weighted 5.0 scale the numbers run higher because AP and honors classes add points, so a 4.0 weighted GPA is roughly a B average in tough classes and 4.5 or above signals a demanding schedule with mostly A grades. A good GPA is one that clears the bar for the schools or programs you are aiming at, read against the scale your school uses.

Does a Harvard Extension GPA calculator use the 5.0 scale?

No. Harvard Extension School grades on a standard unweighted 4.0 scale, so a Harvard Extension GPA calculator caps at 4.0 and does not add honors or AP weighting. The 5.0 weighted scale is a US high school convention for rewarding harder classes. College and continuing-education GPAs, including Harvard Extension, are almost always reported on the 4.0 scale.