Which conversion rule should I use?

The one your institution publishes. The rules differ by several points on the same CGPA, so using one your transcript does not endorse produces a figure nobody will accept.

Where does the 9.5 multiplier come from?

CBSE derived it from the average subject-wise performance of high scorers under their scheme. It was never intended as a general conversion and does not apply to other boards.

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CGPA to Percentage Calculator

CGPA to percentage across the four rules in common use. They disagree by several points on the same CGPA, so the rule your institution specifies is the answer and the others are not.

Also called: cgpa to percentage, gpa percentage converter.

Percentage

79.8%

79.8% from a CGPA of 8.4 on a 10 point scale, using the CBSE 9.5 rule. The other rules give 79.8%, 84%, 76.5% and 84%, a spread of 7.5% points. Conversion rules are set by the institution and differ between them. Check your own handbook before quoting a converted figure.

By the 9.5 rule

79.8%

By the 10 rule

84%

By the 0.75 deduction rule

76.5%

Proportional to the scale

84%

Spread between rules

7.5%

Typical classification

first class with distinction

Rule applied

the CBSE 9.5 rule

Other rules

79.8%, 84%, 76.5% and 84%

On conventions

Conversion rules are set by the institution and differ between them. Check your own handbook before quoting a converted figure.

How this is calculated

Method and background

How this is calculated

The 9.5 multiplier comes from CBSE, which derived it from the average performance of high scorers, and it applies to their scheme rather than universally. Multiplying by 10 is the naive reading of a ten point scale. Subtracting 0.75 before multiplying is used by several Indian universities including Mumbai. On a CGPA of 8.4 those give 79.8, 84 and 76.5, a spread wide enough to change a classification, which is why the page shows all of them.

the CBSE rule, derived from the average of the five subject grade points of high scorers, and not universal

CGPA: Cumulative grade point average

Worked examples

Each of these is asserted on every build. If a change to the engine ever moved one of these answers, the build would fail before the page could print it.

a CGPA of 8.4

CGPA: 8.4
Scale maximum: 10
Conversion rule: CGPA x 9.5, the CBSE rule

Percentage79.8%

8.4 x 9.5; the four rules span 7.5 points on the same CGPA

Open this example

a perfect CGPA

CGPA: 10
Scale maximum: 10
Conversion rule: CGPA x 9.5, the CBSE rule

Percentage95%

boundary: even a perfect CGPA is not 100% under the CBSE rule

Open this example

Method and limits

What it assumes

A cumulative grade point average already computed on the stated scale.

What it deliberately does not model

No conversion is universally accepted, and some institutions publish no rule at all.
Employers and foreign universities often apply their own conversion regardless of the issuing institution.
A converted percentage is an approximation and should be quoted alongside the original CGPA.

Formula version 1.0.0 · definition 1.0.0 · India · Report a problem with this calculator

Frequently asked questions

Which conversion rule should I use?: The one your institution publishes. The rules differ by several points on the same CGPA, so using one your transcript does not endorse produces a figure nobody will accept.
Where does the 9.5 multiplier come from?: CBSE derived it from the average subject-wise performance of high scorers under their scheme. It was never intended as a general conversion and does not apply to other boards.