Calculate percentages, percentage change, and more - instantly.
Our free Percentage Calculator handles the three most common percentage calculations people need in everyday life, school, and work, all in one simple tool. Whether you need to find what a certain percentage of a number is, figure out what percentage one number represents of another, or calculate the percentage increase or decrease between two values, this calculator gives you an instant, accurate answer without any manual math or formula memorization.
The "What is X% of Y?" mode is useful for everyday situations like calculating a discount at checkout, figuring out a tip amount, or determining a commission on a sale. The "X is what % of Y?" mode helps when you know two numbers and want to understand the relationship between them as a percentage, such as calculating a test score or a completion rate. The "Percentage Change" mode is especially useful for tracking growth or decline over time, such as a price change, a change in website traffic, or a change in monthly earnings, and clearly shows whether the change is an increase or a decrease.
Percentage calculations are used constantly in finance, shopping, academics, fitness tracking, and business reporting, yet manually working out the correct formula for each type of percentage question can be confusing and error-prone. This tool removes that friction entirely: simply choose the calculation type that matches your question, enter your numbers, and get a precise result immediately.
This tool is completely free to use, works on any device, and requires no signup or login. It is designed to be fast and simple, so you can get your answer and move on with whatever you were working on.
Yes, this tool is completely free with no signup, login, or limit on how many times you can use it.
Use the "% Change" mode and enter your old value and new value. The tool will show the percentage change and indicate whether it is an increase or a decrease.
Use the "X is what % of Y?" mode, enter the two numbers, and the tool instantly calculates the percentage relationship between them.
Yes, the "What is X% of Y?" mode works well for calculating discounts, tips, commissions, or any situation where you need to find a percentage of a given amount.
Yes, the calculator accepts decimal values and correctly handles negative percentage changes to show decreases.