Seven of the everyday percentage questions live here in one place: X% of Y, X is what percent of Y, increase and decrease, adding or subtracting a percentage, and the difference between two numbers. Every mode shows the formula it used, handles a zero denominator gracefully, and can pass results along in the URL.
Percentage Calculator gives you accurate results instantly, with the underlying formula shown so you can trust the numbers.
Change compares a new value to an original baseline; difference compares two values relative to their average, with no baseline.
Yes. The values are placed in the URL so you can copy and share a link that reopens the same result.
The tool detects zero denominators and shows a clear message instead of an incorrect result.
Enter two numbers