How to use the Percentage Calculator in a few steps
The Percentage Calculator solves any common percent problem in seconds. Follow these steps:
Step 1: Choose the percent calculation type
Select the mode that matches what you need: Percent of (find a percentage of a number), What percent (express one number as a percent of another), or Percent change (measure the change between two values).
Step 2: Enter your numbers
Enter the values the chosen mode requires. For percent of, provide the percentage and the whole. For what percent, provide the part and the whole. For percent change, provide the old and new values.
Step 3: Get your result
Press Calculate. The tool instantly returns the answer — for example, 15% of 80 shows 12, and a change from 40 to 50 shows a 25% increase.
What you need to get started
Only a modern browser such as Chrome, Firefox, Safari, or Edge. There's no installation and no signup — pick a mode, type your numbers, and read the answer.
Verdict
With the Percentage Calculator you get correct percent answers in one step, whichever of the three common problems you face.