Everyday Calculations, Done Instantly
General-purpose calculators for percentages and common math — no spreadsheet needed.
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Not sure which calculator to use?
A quick guide to the right tool for the job.
Calculate a percentage
Find what percent one number is of another — or apply a rate to any value.
Calculate percentageFind a sale price
Enter an original price and discount to see exactly how much you save.
Calculate discountWork out interest
Compare simple and compound interest on any amount over any time period.
Calculate interestAll tools
All general calculators
Percentage Calculator
Stop second-guessing percentages — get the right number instantly.
Open calculatorDiscount Calculator
Calculate the sale price, discount amount, and savings from any original price and discount percentage.
Open calculatorPercentage Increase Calculator
Calculate the percentage increase between two numbers — or find the new value after a percentage increase.
Open calculatorPercentage Decrease Calculator
Calculate the percentage decrease between two numbers or find the new value after a percentage decrease.
Open calculatorAverage Calculator
Calculate the mean, median, and range of up to 10 numbers.
Open calculatorRatio Calculator
Calculate and simplify ratios, find equivalent ratios, or scale a ratio up or down.
Open calculatorWorkflow
How people use these tools
A simple workflow that turns calculations into decisions.
- Step 1
Calculate tips, tax, and VAT on any amount instantly.
- Step 2
Check how much you save on a discounted price before buying.
- Step 3
Work out percentage change between two values.
Real-world example
A 15% tip on an $85 restaurant bill is exactly $12.75 — the percentage calculator gets you there in seconds without mental math.
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