Which formula does my university use?

There is no single nationwide rule — every board / university decides its own multiplier. CBSE and Delhi University use CGPA × 9.5. Anna University, VTU, JNTU, AKTU, and SPPU Engineering use (CGPA − 0.75) × 10. Mumbai University uses CGPA × 9.5 for most UG courses but CGPA × 7.1 + 12 for Engineering CBCS. The dropdown above lists each board with its formula inline so you can pick exactly the rule printed on your marks card.

CBSE CGPA to percentage formula — is it really 9.5?

Yes. CBSE itself published the CGPA × 9.5 rule and even issues a conversion certificate along with the Class 10 marks card explaining the formula, so universities and employers accept it without question. The 9.5 multiplier came from averaging the marks of high-performing students in 2008-2010 — it is not an arbitrary number. Note that some private boards and state boards use their own scales, so always confirm the formula on your transcript before converting.

What is the difference between SGPA and CGPA?

SGPA (Semester Grade Point Average) is your average for a single semester. CGPA (Cumulative GPA) is the running average across all completed semesters. To go from SGPA to CGPA, take the weighted average of all semester SGPAs (weighted by credit). The conversion-to-percentage formulas above apply to CGPA — but if you only have an SGPA for one semester, you can use the same board formula to get the equivalent semester percentage.

How do I convert percentage back to CGPA?

Reverse the same formula your board uses. For CBSE: CGPA = Percentage ÷ 9.5 (e.g. 80.75% → 8.5 CGPA). For Anna / VTU / JNTU: CGPA = (Percentage ÷ 10) + 0.75. For the generic 10-point scale: CGPA = Percentage ÷ 10. Be aware that the reverse conversion can produce a CGPA above 10 if you plug in a percentage higher than what the formula was designed for — clamp to 10 in that case.

CGPA to Percentage Calculator — CBSE, VTU & Anna Univ

CGPA to %

📐 Math

CGPA to Percentage Calculator

Convert CGPA to percentage using the correct formula for your board / university — CBSE 10th (×9.5), Anna Univ ((CGPA-0.75)×10), VTU (10×SGPA-7.5), JNTU, Mumbai Univ, SPPU, and generic 10-point scale. Each board has a different formula.

Reviewed by the CalculatorKosh Editorial TeamUpdated June 2026Free · No sign-up

CGPA & Board

CGPA

010

Enter your CGPA on the 10-point scale (0 to 10).

Board / University

Percentage

CBSE Class 10 (CGPA × 9.5) · formula: Percentage = CGPA × 9.5

Letter grade

A+

Grade context

Excellent

Formula picker — same CGPA, different boards

If your CGPA is 8.5, your percentage depends on which board's rule you apply.

Board	Percentage
CBSE 10selected	80.75%
Anna Univ.	77.50%
Generic 10-pt	85.00%
Mumbai Engg.	72.35%

Showing the four most-asked boards. Pick the board printed on your marks card above to lock in the right formula.

Grade band reference

O90% & above

A+80–89%

← 80.75%

A70–79%

B+60–69%

B50–59%

C40–49%

P35–39%

FBelow 35%

How It Works

CGPA (Cumulative Grade Point Average) is a 10-point summary of your academic performance. Most universities, employers, and admission portals still want a percentage — but the formula for converting CGPA to percentage is different for every board. Pick your board from the dropdown above, and this calculator applies the exact rule that board publishes.

How the formulas differ

The two most common rules are Percentage = CGPA × 9.5 (CBSE, Delhi University, Mumbai UG) and Percentage = (CGPA − 0.75) × 10 (Anna University, VTU, JNTU, AKTU, SPPU Engineering). Mumbai University Engineering uses a unique CGPA × 7.1 + 12 formula, and SPPU Arts/Science uses a plain CGPA × 10.

Why the multipliers vary

CBSE's 9.5 multiplier came from averaging the marks of high-scoring students in 2008-2010. The (CGPA − 0.75) × 10 rule used by most engineering universities accounts for the fact that no one scores below grade 5 (the minimum pass grade), so the lowest meaningful CGPA maps to 42.5%, not 0%. Mumbai Engineering's 7.1 × CGPA + 12 was published by the University to bring the conversion in line with absolute marks under the CBCS scheme.

SGPA vs CGPA

SGPA is a single-semester average; CGPA is the running average across all semesters. The formulas above work for either, since both are on the same 10-point scale.

Frequently Asked Questions

CGPA (Cumulative Grade Point Average) is a number on a 10-point scale that summarises your performance across all subjects in a semester or year. Percentage is the older marks-out-of-100 system. Universities adopted CGPA so that marks across very different subjects could be averaged on a common scale, but most employers and admission portals still ask for the percentage equivalent — which is why every board publishes its own CGPA-to-percentage formula.