Percentage
Comprehensive percentage calculators: basics, profit/loss, discounts, tax, and more.
Discount Calculator
Free discount calculator to find the final price after applying single or double discounts. See how much you save on any purchase with instant results.
Percentage Change Calculator
Free percentage change calculator to find the percentage increase or decrease between two values. Perfect for comparing prices, grades, and performance.
Percentage Error Calculator
Free percentage error calculator to compute the percent error between a measured value and the actual value. Widely used in science labs and engineering.
Increase by Percentage
Free percentage increase calculator to find the new value after increasing a number by a given percentage. Useful for salary raises, price hikes, and growth.
Percentage of a Value
Free percentage of a number calculator to find what X% of any value is. Quickly compute tips, discounts, tax amounts, and proportions with one click.
Profit & Margin Calculator
Free profit percentage calculator to compute markup and margin from cost price and selling price. Instantly see your profit amount and profit percentage.
Reverse Tax Calculator
Free reverse tax calculator to find the original price before tax was added. Enter the total amount and tax rate to see the pre-tax price and tax breakdown.
Successive Percentage Change
Free successive percentage calculator to find the net effect of two consecutive percentage changes. Useful for compound discounts, taxes, and growth rates.
Sales Tax Calculator
Free tax calculator to compute the tax amount and total price including tax from a base price and tax rate. Works for sales tax, GST, VAT, and any tax type.
X is What % of Y
Free percentage calculator to find what percentage one number is of another. Answer questions like 'what percent of 200 is 50?' instantly and accurately.