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Percentage Calculator
Free online Percentage calculator. Solve algebraic, statistical, geometric, and numerical equations step-by-step.
Calculate percentage of a number
What is% of?
Result
30.00
Formula: (15 ÷ 100) × 200 = 30
Percentage Calculator — 3 Types in One Tool
This free percentage calculator covers three common use cases: finding what percentage one number is of another, calculating a percentage of a number, and finding the percentage change between two values. Perfect for students, accountants, shoppers, and analysts.
Step-by-Step Guide
- 1Select the type: percentage of a number, what % is X of Y, or percentage change.
- 2Enter the values in the input fields.
- 3See the instant result with formula explanation.
Formula
X% of Y = (X/100)×Y | X is what % of Y = (X/Y)×100 | % Change = ((New−Old)/Old)×100Why Use Our Percentage Calculator?
- Instant browser-side calculation
- 100% private — no data stored
- Visual charts & breakdowns
- Free forever — no sign-up needed
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