Percentage Calculator Online Free
Calculate percentages, percentage increase, decrease, discounts and percentage difference online for free. Get instant results for shopping, finance, grades and everyday math.
How to Use the Percentage Calculator
Calculate common percentage problems in three simple steps.
1. Choose calculation
Select percentage of a number, percentage increase, decrease or discount.
2. Enter values
Add your numbers into the calculator fields.
3. Get result
Click Calculate and copy the result if needed.
Calculate percentages for everyday use.
This percentage calculator helps with discounts, price changes, grades, taxes, finance, shopping, business metrics, growth rates and quick math problems.
You can calculate what X% of Y is, find what percentage one number is of another, calculate increase or decrease and work out sale discounts and final prices.
What is a percentage calculator?
A percentage calculator helps you quickly solve common percent problems, such as finding a percentage of a number, comparing two values or calculating a discount.
It is useful for shopping, finance, school, reports, business metrics and quick everyday calculations.
When should you use it?
- Calculating discounts and sale prices
- Finding percentage increase or decrease
- Checking grades, scores and proportions
- Comparing business or finance metrics
- Solving everyday percentage math quickly
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Percentage Calculator FAQ
Common questions about calculating percentages online.
How do I calculate 20% of 150?
Enter 20 as the percentage and 150 as the number. The result is 30.
How do I calculate percentage increase?
Enter the original value and the new value. The calculator will show the percentage change.
Can I calculate discounts?
Yes. Enter the original price and the discount percentage to calculate the final price and amount saved.
Is this percentage calculator free?
Yes. This online percentage calculator is free to use.
How do I find what percentage one number is of another?
Choose X is what % of Y, enter the part value and total value, then calculate the percentage.
Can I calculate percentage decrease?
Yes. Use the increase/decrease mode. If the new value is lower than the original value, the result is a percentage decrease.
Can I copy the result?
Yes. Click Copy Result to copy the formula and result instantly.
Does it work on mobile?
Yes. This percentage calculator works on desktop, tablet and mobile browsers.