Percentage Calculator
Calculate percentages, fractions, and discounts.
Runs in your browser — your data never leaves your device
Frequently Asked Questions
What calculations can I perform?
Three modes are available: (1) find X% of a number, (2) determine what percent one number is of another, and (3) calculate percentage increase or decrease between two values.
How do I calculate a percentage of a number?
Select the "X% of Y" tab, enter the percentage and the number, and the result is displayed instantly. For example, 15% of 200 = 30.
How do I calculate percent change?
Select the "% Change" tab, enter the original value and the new value. The tool computes the percentage increase or decrease. For example, from 80 to 100 is a 25% increase.
Is this percentage calculator free?
Yes, ToolDock's percentage calculator is completely free, requires no signup, and runs entirely in your browser.