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Math & Statistics

Percentage Calculator.

Values remain in this browser. Solve percentage-of, what-percent and reverse-percentage problems with shown formulas. Shows the formula and independently checks the result.

Use Percentage Calculator

Private in this browser. Expressions, values, weights and results stay in this browser.

Tool options
Preparing the local tool…

How it works

  1. 01

    Enter values in the labeled fields.

  2. 02

    Run the bounded local calculation.

  3. 03

    Copy or download the independently checked result.

Frequently asked questions

Does the result leave the browser?

No. Calculation and verification are local.

Does Percentage Calculator upload my data?

Percentage Calculator runs locally in your browser. Expressions, values, weights and results stay in this browser.

What output does Percentage Calculator create?

Percentage Calculator creates Json output after the result passes its local verification checks.

Scientific CalculatorEvaluate standard arithmetic, trigonometric, logarithmic and exponential expressions locally. Shows the formula and independently checks the result.Percentage Change CalculatorCalculate increase or decrease between two values and handle sign changes explicitly. Shows the formula and independently checks the result.Percentage Difference CalculatorCalculate symmetric percentage difference between two values. Shows the formula and independently checks the result.
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