Percentage Calculator.
Calculate percentages quickly and accurately for school, shopping, finance, business and everyday math. No signup and no paid API required.
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All Percentage Calculators
Choose a dedicated calculator for the exact percentage problem you need to solve.
Percentage Calculator
Calculate a percentage of any number quickly and accurately.
Percentage Increase Calculator
Calculate the percentage increase between an original and a new value.
Percentage Decrease Calculator
Calculate the percentage decrease between an original and a new value.
Percentage Difference Calculator
Find the percentage difference between two numbers.
Percentage Change Calculator
Calculate percentage change from an original value to a new value.
Percentage Discount Calculator
Calculate discounts, savings, and final prices.
Percentage Off Calculator
Find the amount saved and final price after a percentage discount.
Reverse Percentage Calculator
Find the original value when you know a percentage and the final value.
Percentage Error Calculator
Calculate percentage error between measured and accepted values.
Percentage to Decimal Converter
Convert percentages to decimal numbers instantly.
Decimal to Percentage Converter
Convert decimal numbers into percentages.
Fraction to Percentage Converter
Convert fractions into percentages.
Percentage to Fraction Converter
Convert a percentage into a simplified fraction.
Percentage of a Number Calculator
Calculate any percentage of a number.
What Percent of Calculator
Find what percentage one number is of another.
Sales Tax Percentage Calculator
Calculate sales tax and the final price.
Tip Percentage Calculator
Calculate a tip and total bill from a tip percentage.
Grade Percentage Calculator
Calculate a percentage score from points earned and total points.
Percentage Profit Calculator
Calculate profit amount and profit percentage.
Percentage Loss Calculator
Calculate loss amount and loss percentage.
Percentage Ratio Calculator
Compare two values and calculate their percentage ratio.
What Is a Percentage?
A percentage expresses a number as a part of 100. Percentages are used everywhere—from discounts and taxes to grades, business reports and financial comparisons.
How to Calculate a Percentage
The basic formula is: Percentage = (Part ÷ Whole) × 100. To find a percentage of a number, divide the percentage by 100 and multiply it by the number.
Percentage Increase and Decrease
Percentage increase compares how much a value has grown relative to its original value. Percentage decrease measures how much it has fallen relative to the original value.
Percentage Calculator for Shopping
Use the discount, percentage off and sales tax calculators to work out savings and final prices before you buy.
Percentage Calculator for Students
Calculate grades, fractions, percentage changes and common math conversions without installing an app.