CGPA to Marks Calculator

By CalculatorBolt Team | Published: | Updated: | Reviewed by: Education Editor

Convert your CGPA to percentage and marks out of any total in seconds. Choose a preset formula (×9.5, ×10) or set a custom rule. You can also convert marks back to CGPA. Rules vary—always check your handbook.

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How It Works

We normalize your CGPA to a 10-point scale, convert it to a percentage using a preset or custom linear formula, and then compute marks out of your chosen total. For reverse conversion, we invert the formula safely.

Presets Explained

  • ×9.5: Percentage = CGPA(10) × 9.5
  • ×10: Percentage = CGPA(10) × 10
  • Offset: Percentage = (CGPA(10) − 0.5) × 10
  • Custom: Percentage = a × CGPA(10) + b (you define a and b)

Always verify locally—these are general examples.

Inputs Explained

  • CGPA & Scale: Enter CGPA and select your scale (10/4/5/7/custom)
  • Formula Preset: Pick ×9.5/×10/Offset or define Custom (a, b)
  • Total Marks: Choose 100/500/600 or any number
  • Rounding: Set decimals for percentage and marks
  • Reverse tab: Convert Marks → CGPA (we invert your mapping)

Examples

Example 1 (CGPA→Marks)

CGPA 8.3 on 10-point; preset ×9.5; total=500

Percentage = 8.3 × 9.5 = 78.85%

Marks = 78.85% × 500 = 394.25 → 394 (rounded 0 decimals)

Example 2 (CGPA 3.45 on 4-point; ×10; total=600)

CGPA₁₀ = 3.45 × (10/4) = 8.625

Percentage = 8.625 × 10 = 86.25%

Marks = 0.8625 × 600 = 517.5 → 518 (rounded)

Tips & Notes

  • Confirm your university's official mapping; some use offsets or program-specific rules.
  • If a custom rule yields a percentage >100 or <0, review inputs—official rules keep results in range.
  • For Percentage ↔ CGPA directly, see our dedicated tools below.

FAQs

Use what your university/board publishes. Common general rules are ×9.5 or ×10, but not universal.

Yes. Use the reverse tab. We normalize to 10-point then invert your selected mapping.

Yes. We normalize to 10-point internally and convert back to your chosen scale.

No. Everything runs in your browser. Use Share Link to save or share your settings.

No. It's an informational tool. Always verify with official documents.

Disclaimer

Informational tool only. Conversion rules vary by university/board. Confirm the exact formula with official documents.

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