How the percentage formula works
Divide the part by the whole, then multiply by 100. Example: 25 of 200 is (25 ÷ 200) × 100 = 12.5%. Switch modes for reverse percent-of, change between two numbers, or tip/discount amounts on a bill.
When to use this tool
Reach for it when you need a fast check on discounts, commission splits, progress toward a goal, or how much one figure represents of a larger total.
Getting a trustworthy result
Percentage Calculator runs entirely in your browser from the numbers you enter. Check the methodology notes above, then compare with a related calculator or a short guide if you want a second pass before you decide.
What to do next
If prices or rates sparked this visit, glance at Markets. If you want a walkthrough, open a related guide. Or switch to another calculator in the same category to finish the task in one sitting.
FAQ
How do I calculate a percentage?
Divide the smaller number by the larger number and multiply by 100. This tool does that instantly from the two values you enter.
Is percentage the same as percentage points?
No. A change from 10% to 12% is a 2 percentage-point rise, but a 20% relative increase. Use this calculator for relative percent-of math.
Is the Percentage Calculator free?
Yes. It runs in your browser with no account required.
Where should I go after using this tool?
Try related tools in the sidebar, Markets for live-style price snapshots, or Blog guides that link back into calculators.