Calculate percentages instantly — find what percent a number is of another, calculate percentage increase or decrease, or find a number when you know its percentage. Free, accurate and private.
Did this percentage calculator help you?
Pick from four common percentage calculations: percent of a number, what percent, percent change, or reverse percentage.
Type in the two values needed for your calculation.
See your answer immediately, along with the formula used and any relevant breakdown.
Four of the most common percentage calculations, all in one free tool.
All calculations run instantly in your browser. Your numbers are never sent to any server or stored anywhere.
Find what a percentage of any number is — useful for discounts, tips, tax and commissions.
Calculate what percentage one number represents of another — great for grades, scores and ratios.
Find the percentage change between two values — perfect for tracking price changes, growth or decline.
Find the original total when you know a value and its percentage — useful for reversing discounts or tax.
No account, no watermark, no daily limit. Use the percentage calculator as many times as you want, completely free.
This percentage calculator instantly solves the most common percent problems people search for: "percentage calculator," "percent of a number," "percentage increase calculator," "percentage decrease calculator," and "what percent of." Just pick the calculation type that matches your question and enter your numbers.
Percentage change is calculated by subtracting the original value from the new value, dividing by the original value, then multiplying by 100. A positive result means an increase, while a negative result means a decrease.
All tools work instantly on your device, private by design.
Divide the percentage by 100, then multiply by the number. For example, 20% of 150 is (20 ÷ 100) × 150 = 30. Use the "X% of Y" tab above to calculate this instantly.
Divide the first number by the second, then multiply by 100. For example, 30 is what percent of 150? (30 ÷ 150) × 100 = 20%. Use the "X is what % of Y" tab above.
Subtract the original value from the new value, divide by the original value, then multiply by 100. A positive result is a percentage increase, and a negative result is a percentage decrease.
Divide the known value by the percentage (expressed as a decimal). For example, if 30 is 20% of a number, the original number is 30 ÷ 0.20 = 150. Use the "Find the Total" tab above.
Yes, completely free with no sign up, no watermark and no limit on how many times you can use it.
No. This calculator is private by design. All calculations happen instantly in your browser and no numbers or personal information are ever sent to or stored on any server.