About the Weighted GPA Calculator
Work out your high-school GPA both ways: unweighted on the usual 4.0 scale, and weighted with extra points for Honors, AP, IB or dual-enrollment courses. Enter each course's grade, credits and level, and choose the point scale and boosts your school uses.
Schools don't all calculate GPA the same way, so nothing is hidden: the point scale, the value of an A+, and the size of each boost are settings you can see and change, and the result names the scale it used.
How it works
Each grade is converted to grade points on the scale you choose, then multiplied by the course's credits. The unweighted GPA is the total of those points divided by the total credits. For the weighted GPA, the boost for the course level is added to each course's points before the same division.
Unweighted GPA = Σ (grade points × credits) ÷ Σ credits Weighted GPA = Σ ((grade points + level boost) × credits) ÷ Σ credits
Results are shown to two decimal places, rounding halves up. Some schools truncate instead (3.875 shown as 3.87); if yours does, the full value in the working lets you apply that rule.
Assumptions and limits
- Point scales offered: letter grades only (A=4, B=3, C=2, D=1, E/F=0, the example chart used by College Board), plus/minus in 0.3 steps (A−=3.7, B+=3.3 …), or plus/minus in thirds (A−=3.67, B+=3.33 …).
- A+ counts as 4.0 by default; choose 4.3 if your school awards it.
- Default boosts are +0.5 for Honors and +1.0 for AP, IB or college courses. These are common conventions, not a standard; change them to match your school.
- No boost is added to an F unless you switch that on, because most weighting policies only boost passing grades.
- Credits are the weight of each course. If your school doesn't use credits, give every year-long course 1 and every semester course 0.5.
Worked examples
Unweighted GPA with letter grades
A (3 credits), B (4 credits) and C (3 credits) give 4×3 + 3×4 + 2×3 = 30 grade points over 10 credits, so the GPA is 3.0.
(4×3 + 3×4 + 2×3) ÷ (3 + 4 + 3) = 30 ÷ 10 = 3.00
Adding AP and Honors boosts
Three 3-credit courses: A in AP Calculus, B in Honors English and C in regular History. Unweighted: (12 + 9 + 6) ÷ 9 = 3.0. Weighted with +1 for AP and +0.5 for Honors: ((4+1)×3 + (3+0.5)×3 + 2×3) ÷ 9 = 31.5 ÷ 9 = 3.5.
Unweighted 27 ÷ 9 = 3.00 Weighted 31.5 ÷ 9 = 3.50
Plus/minus grades on the 0.3-step scale
An A− and a B+ in two 3-credit courses give (3.7×3 + 3.3×3) ÷ 6 = 21 ÷ 6 = 3.5. On the thirds scale the answer is the same here, because 3.67 + 3.33 also adds up to 7.
(3.7 × 3 + 3.3 × 3) ÷ 6 = 3.50
Grade points on each scale
Your school's transcript or handbook is the authority. Colleges often recalculate GPAs with their own rules.
| Grade | Letter only | 0.3 steps | Thirds |
|---|---|---|---|
| A+ | — | 4.0 (or 4.3) | 4.0 (or 4.3) |
| A | 4 | 4.0 | 4.0 |
| A− | — | 3.7 | 3.67 |
| B+ | — | 3.3 | 3.33 |
| B | 3 | 3.0 | 3.0 |
| B− | — | 2.7 | 2.67 |
| C+ | — | 2.3 | 2.33 |
| C | 2 | 2.0 | 2.0 |
| C− | — | 1.7 | 1.67 |
| D+ | — | 1.3 | 1.33 |
| D | 1 | 1.0 | 1.0 |
| D− | — | 0.7 | 0.67 |
| E / F | 0 | 0 | 0 |
How to use the Weighted GPA Calculator
- Choose your school's point scale and boosts. Pick letter-only, 0.3 steps or thirds, set A+ to 4.0 or 4.3, and adjust the Honors and AP/IB boosts if needed.
- Enter each course. Choose the grade, enter the credits (1 for a year-long class if unsure) and the course level.
- Read both GPAs. The unweighted and weighted GPA update instantly, with the total grade points and credits used.
Frequently asked questions
What is the difference between weighted and unweighted GPA?
An unweighted GPA treats every course the same, so an A is worth 4.0 whether the class is regular or AP. A weighted GPA adds extra points for harder courses, so an A in an AP class might count as 5.0. Weighted GPAs can therefore go above 4.0.
How many extra points do Honors and AP classes get?
It depends on the school. Many add 0.5 for Honors and 1.0 for AP, IB or college courses, which are the defaults here, but some add less, cap the total, or only weight certain years. Check your school handbook and change the boost fields to match.
Is an A+ worth 4.0 or 4.3?
Both exist. Many high schools cap an A+ at 4.0, while some colleges and schools award 4.3. Choose the option your school uses; the result tells you which value was applied so there is no hidden assumption.
Do colleges look at weighted or unweighted GPA?
Many colleges look at both, and some recalculate GPA with their own rules, for example removing weighting or ignoring non-core classes. College Board notes that colleges may adjust or remove weighting to compare applicants fairly, so report the figures exactly as your school calculates them.
What should I enter for credits?
Credits tell the calculator how much each course counts. Use the credits on your transcript. If your school doesn't use credits, enter 1 for a full-year course and 0.5 for a one-semester course, so longer courses count more.
Sources
Data last checked: 2026-10-13.
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