Percentage Calculator
The percentage calculator handles all common percentage calculations: finding a percentage of a number, calculating what percentage one value is of another, and determining the percentage change between two values.
Perfect for discounts, tips, grades, statistics and everyday math.
Percentage Calculation Modes
What is X% of Y? What percentage is X of Y? X is Y% of what? Percentage increase/decrease between two values. All modes are available in one easy tool.
Common Percentage Formulas
Percentage of a number: (Percent/100) x Number. Percentage change: ((New-Old)/Old) x 100. Percentage one number is of another: (Part/Whole) x 100.
Related Tools
Age Calculator
Calculate your exact age in years, months and days from your birth date.
Date Difference Calculator
Calculate the number of days, weeks and months between two dates.
Unit Converter
Convert between different measurement units for length, weight, temperature and more.
Profit Margin Calculator
Calculate profit margin, markup and selling price from cost and desired profit.
Currency Converter
Convert between world currencies using live exchange rates.
Military Service Calculator
Calculate your remaining military service time and projected discharge date.