GPA Calculator

GPA Calculator – College, Weighted, Unweighted And International

This GPA Calculator brings multiple academic scenarios into a single page. You can compute your college GPA on a 4.0 scale, compare weighted and unweighted high school GPAs, and estimate international GPA equivalents from percentage, 10-point and 5-point systems.

The core idea behind every mode is the same: GPA is a weighted average of your grade points, where the weights are course credits or unit hours. By entering your real course loads and grades, you get a realistic picture of your academic performance.

Core GPA Formula With Credits

The standard GPA formula on a 4.0 scale is a weighted average:

Each letter grade is first converted to numeric grade points on a 4.0 scale. For example, A = 4.0, A− = 3.7, B+ = 3.3, B = 3.0 and so on. The calculator then multiplies each course’s grade points by its credit value, sums all quality points, and divides by the total credits.

This formula is used consistently in the College GPA tab, in the Weighted and Unweighted tab and internally when you include previous GPA and credits to update your cumulative GPA.

Mode 1: College GPA On A 4.0 Scale

In the college GPA mode, you enter each course, its credits and the letter grade earned. The calculator applies the standard 4.0 conversion table and uses the credit-weighted formula to compute your term GPA.

The term GPA formula is:

If you also provide a previous cumulative GPA and total completed credits, the calculator updates your cumulative GPA using:

This is exactly what many colleges do when they recompute GPA after each semester. The calculator simply automates these weighted-average calculations and formats the result to the number of decimal places you choose.

Mode 2: Weighted And Unweighted High School GPA

Many high schools report both unweighted GPA and weighted GPA. Unweighted GPA treats all courses the same on a 4.0 scale. Weighted GPA increases grade points for advanced classes such as Honors, AP or IB.

The unweighted GPA uses the same core formula as the college GPA mode, but only the base 4.0 scale is applied:

The weighted GPA adjusts grade points before applying the same credit-weighted formula. A common pattern is:

• Regular course: no bonus, weighted points = base points
• Honors course: weighted points = base points + 0.5
• AP or IB course: weighted points = base points + 1.0

With this scheme, a student who earns an A (4.0) in an AP course receives 5.0 weighted points. The calculator uses:

This allows you to compare how your transcript looks on a strict 4.0 scale and on a weighted scale that rewards course difficulty.

Mode 3: International GPA Conversion

International students often need to estimate how their home grading system maps to a 4.0 GPA. There is no single universal rule, but simple linear formulas can give a quick approximation. This GPA Calculator uses separate formulas for each supported system.

Percentage To 4.0 GPA

For percentage grades on a 0–100 scale, a straightforward approximation is:

For example, an 82 percent average becomes GPA ≈ (82 ÷ 100) × 4.0 = 3.28.

10-Point CGPA To 4.0 GPA

In a 10-point system, a similar linear mapping is used:

So a CGPA of 8.1 on a 10-point scale becomes GPA ≈ (8.1 ÷ 10) × 4.0 = 3.24.

5-Point Scale To 4.0 GPA

For a 5-point grading scale, the calculator uses:

A 4.3 on a 5-point scale becomes GPA ≈ (4.3 ÷ 5) × 4.0 = 3.44. These conversions are approximations and actual admissions offices may apply different cutoffs or piecewise formulas.

Letter Grades And Grade Point Values

The GPA Calculator uses a common 4.0 scale with plus and minus grades:

• A = 4.0, A− = 3.7
• B+ = 3.3, B = 3.0, B− = 2.7
• C+ = 2.3, C = 2.0, C− = 1.7
• D+ = 1.3, D = 1.0, D− = 0.7
• F = 0.0

When you choose a letter grade in any tab, the tool looks up the base grade points from this table. In the weighted mode, it then adds any Honors or AP/IB bonus before computing GPA through the weighted-average formula.

How The Calculator Handles Cumulative GPA

Cumulative GPA is another weighted average that combines previous coursework with your current term. To do this, you can think in terms of total quality points. If your previous cumulative GPA is G and you have completed C credits, then your total previous quality points are G × C.

After a new term with T credits and term GPA Gᵗ, your new total quality points become G × C + Gᵗ × T and your new total credits are C + T. The calculator therefore uses:

This keeps the cumulative GPA correctly weighted by credits instead of treating each semester equally regardless of size.

Practical Tips For Using The GPA Calculator

• Enter accurate credit values for each course so the weighted average reflects your real workload.
• Use the weighted tab if your school reports both weighted and unweighted GPAs for transcripts or class rank.
• Use the international tab for quick conversions only and always confirm with official university guidance.
• Experiment with future letter grades to see what GPAs are possible if you meet certain targets.