Percentage Calculator Online

Calculate percentages instantly — find percentages of numbers, percentage changes, increases, and decreases. Free and easy to use.

Percentage (X)

Value (Y)

About This Tool

A versatile percentage calculator that supports 5 common percentage operations: finding a percentage of a number, determining what percent one number is of another, calculating percentage change, and computing increases or decreases by a given percentage.

Frequently Asked Questions

How do I calculate a percentage of a number?

Select "What is X% of Y?", enter the percentage and the total value. For example, 15% of 200 = 30.

How is percentage change calculated?

Percentage change = ((New - Old) / |Old|) × 100. A positive result means an increase, negative means a decrease.

Related Tools

Count words, characters, sentences, and paragraphs in any text.

Reading Time Calculator

Estimate reading time and speaking time for any text. Word and character stats included.

Calculate your exact age in years, months, days. Find zodiac sign and next birthday.

Workflow Links

Suggested step-by-step tools based on this page intent.

Before This Tool

Tip CalculatorCalculate tips and split bills easily. Preset percentages and bill splitting for any group size.Age CalculatorCalculate your exact age in years, months, days. Find zodiac sign and next birthday.YAML ↔ JSON ConverterConvert between YAML and JSON formats instantly.

Next Step Tools

Age CalculatorCalculate your exact age in years, months, days. Find zodiac sign and next birthday.Tip CalculatorCalculate tips and split bills easily. Preset percentages and bill splitting for any group size.YAML ValidatorValidate YAML syntax online. Find errors with line numbers and see parsed JSON output.