GPA Scale Converter — Converting Between 4.0, 5.0, CGPA, and Percentage

GPA scales vary by country and even by institution. The 4.0 scale is standard in the US, Canada (partially), and increasingly internationally. A 10-point CGPA is used in India. A percentage-based system is used in many Commonwealth countries. And some US high schools use a 5.0 or 6.0 scale for weighted GPAs. Converting between these systems is essential for international students, graduate school applicants, and anyone comparing credentials across different institutions.

The free GPA calculator calculates GPA on the standard 4.0 letter-grade scale. This guide explains how to convert the result to other scales and includes comprehensive conversion charts for the most common GPA scales worldwide.

The 4.0 GPA Scale — The US Standard

Letter Grade	Grade Points (4.0 Scale)	Percentage Range	Description
A+	4.0 (some schools 4.3)	97-100%	Outstanding
A	4.0	93-96%	Excellent
A-	3.7	90-92%	Excellent
B+	3.3	87-89%	Very Good
B	3.0	83-86%	Good
B-	2.7	80-82%	Good
C+	2.3	77-79%	Above Average
C	2.0	73-76%	Average / Satisfactory
C-	1.7	70-72%	Below Average
D+	1.3	67-69%	Passing (barely)
D	1.0	60-66%	Passing (minimum)
F	0.0	Below 60%	Failing

Enter any combination of these letter grades and credit hours into the free GPA calculator to calculate your 4.0-scale GPA. The result is the standard GPA used by US undergraduate programs and most graduate admissions processes.

4.0 GPA to Percentage — Conversion Chart

There is no single universal formula to convert a 4.0 GPA to a percentage — because the percentage ranges mapped to each letter grade vary by institution. However, the most commonly used conversion table (for US institutions) is:

4.0 GPA	Approximate Percentage	Letter Grade
4.0	93-100%	A/A+
3.7	90-92%	A-
3.3	87-89%	B+
3.0	83-86%	B
2.7	80-82%	B-
2.3	77-79%	C+
2.0	73-76%	C
1.7	70-72%	C-
1.3	67-69%	D+
1.0	60-66%	D
0.0	Below 60%	F

For intermediate GPA values (like 3.4 or 2.8), you can estimate the percentage using the formula: Percentage ≈ GPA × 20 + 13. This is a rough approximation for the 4.0 scale. For example, a 3.5 GPA ≈ 3.5 × 20 + 13 = 83%. Use the detailed chart above for more precise values at standard grade points.

For a more complete conversion chart including percentage to GPA direction, see the percentage to GPA conversion guide.

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Indian CGPA (10-Point Scale) to 4.0 GPA Conversion

Indian universities commonly use a 10-point CGPA scale. The conversion to a 4.0 GPA (required for US graduate school applications) is approximately:

Simple formula: US GPA ≈ (Indian CGPA ÷ 10) × 4

Indian CGPA (10-point)	Approximate US GPA (4.0)	Percentage (India ~)
10.0	4.0	90-100%
9.0	3.6	85-90%
8.0	3.2	75-85%
7.5	3.0	70-75%
7.0	2.8	65-70%
6.5	2.6	60-65%
6.0	2.4	55-60%

Note: WES (World Education Services) and other credential evaluators may calculate conversions differently for specific institutions. For official graduate school applications, credential evaluation services like WES provide a formal conversion that universities accept — these are more reliable than self-calculated conversions.

To use our free GPA calculator with Indian CGPA: convert each course grade to its letter grade equivalent (typically A=9.0-10.0, B=7.0-8.9, C=5.0-6.9, etc. — check your institution's grade chart) and enter the letter grades and credit hours.

Converting Between 4.0 and 5.0 Weighted GPA Scales

The 5.0 scale is primarily used for high school weighted GPA calculations (where AP/Honors courses add 1.0 grade points to a 4.0 base). Converting between them:

5.0 to 4.0: A weighted GPA on a 5.0 scale does not convert directly to a 4.0 scale — they measure different things. A 4.5 on a 5.0 scale means "this student earned A grades in AP courses" — not that their GPA is halfway between 4.0 and 5.0 on some universal scale. For college reporting, you report your school's official unweighted and weighted GPA as-is.

When colleges ask for your GPA on a 4.0 scale: They are typically asking for your unweighted GPA (which is on a 4.0 scale), not your weighted GPA. If your school only reports a weighted 4.8 and does not calculate an unweighted GPA, you would estimate the unweighted by removing the AP/honors boosts from each course grade.

Our calculator outputs a 4.0-scale GPA. This is the standard unweighted calculation. If you want your weighted GPA, follow the method described in the Honors and AP GPA guide to add course-level adjustments before calculating.

Frequently Asked Questions

What is a 3.5 GPA as a percentage?

A 3.5 GPA corresponds to approximately 87-92% in the US grading system, roughly equivalent to a B+/A- range. The exact percentage depends on your institution's grade scale, but 3.5 generally represents consistently strong academic performance.

How do I convert CGPA to GPA for US applications?

A rough conversion for Indian 10-point CGPA: multiply by 0.4 (e.g., 8.5 CGPA × 0.4 = 3.4 GPA). For official US graduate school applications, use a credential evaluation service like WES or ECE that provides a certified conversion recognized by universities.

Is a 4.0 GPA the same as 100%?

Not exactly. A 4.0 GPA corresponds to earning A grades, which typically means 93% or above in most US grading systems (with 97-100% being A+). The mapping from percentage to letter grade varies by institution, but 4.0 generally represents strong to excellent performance in the A range.

What is a good GPA in India for US grad school?

US graduate schools typically look for an equivalent of 3.0+ on the 4.0 scale, which corresponds to roughly 7.5/10 CGPA or 75%+ in the Indian system. Competitive programs (top engineering, MBA, medical) expect 3.5+ equivalent, or around 8.5-9.0 CGPA.