Calculate percentages, percentage change and what percent one number is of another.
Calculate percentages, percentage change and what percent one number is of another.
This tool is designed to process your data in your browser whenever possible. Files used by browser-based tools are not intentionally uploaded to this WordPress website.
This percentage calculator handles three common percentage questions: finding a percentage of a number, finding what percent one value is of another, and calculating percentage change from a starting value to a new value.
It is useful for discounts, growth rates, grades, business metrics, budgeting and everyday comparisons. Enter two numbers, choose the calculation type and get the result immediately.
Percent means “per hundred.” For example, 20% of 150 is 30 because 20/100 × 150 = 30. When asking what percent A is of B, the calculation is A/B × 100. Percentage change compares the difference with the magnitude of the starting value.
Be careful when the starting or comparison value is zero because some percentage formulas require division by that number and therefore are undefined. The tool displays an error for those cases instead of returning a misleading infinite result.
Toolora is designed to perform this tool’s main processing in your browser whenever technically possible. Your selected files or entered data are not intentionally uploaded to this WordPress website for the tool operation. As with any website, normal hosting, analytics, advertising or third-party script requests may still occur according to the site owner’s configuration and privacy policy.
Choose “A% of B.” The formula is A divided by 100, multiplied by B.
Choose the corresponding mode. The calculation divides A by B and multiplies by 100.
It measures the difference from a starting value to a new value relative to the starting value, expressed as a percentage.
Some percentage formulas divide by the base value, and division by zero is undefined.
No. The calculations run directly in your browser.