Percentage calculator

Three everyday percentage sums in one place.

To turn marks into a percentage, use the second row: "450 is what % of 600".

How to use it

  1. Fill in the row that matches your question.
  2. The answer appears instantly.

Questions

How do I calculate percentage of marks?

Divide marks obtained by total marks and multiply by 100. Use the second row: obtained "is what % of" total.

Guides

All guides
Calculators · 23 Oct 2026GST Calculation Explained: Inclusive vs Exclusive, CGST, SGST, IGSTAdd or remove GST with two simple formulas. Worked rupee examples for inclusive and exclusive prices, plus when CGST+SGST or IGST applies.Calculators · 23 Oct 2026GST Formula in Excel: Add GST & Reverse GST CalculationExcel formulas to add GST, remove GST from an inclusive price (reverse GST) and split CGST/SGST, with 18%, 12% and 5% examples.Calculators · 23 Oct 2026Home Loan EMI Calculator: EMI for ₹20, 30 & 50 Lakh LoansHome loan EMI for ₹20 lakh, ₹30 lakh and ₹50 lakh at 15–30 years, a worked bank example, how tenure changes total interest, and ways to reduce EMI.

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