Percentage Calculator

How it works

1. Pick the tab for the type of calculation you need: 'X% of Y', 'X is what % of Y', or '% change from X to Y'.
2. Enter the two required numbers in the corresponding fields.
3. The result updates automatically as you type, with no button to press.
4. If the calculation isn't possible (for example, dividing by zero), you'll see a clear message explaining the issue.

Use cases

• Calculating discounts on purchases: how much 20% off a $50 item comes to.
• Figuring out what percentage of your budget a specific expense represents.
• Calculating the percentage increase or decrease in prices, sales, or any metric between two periods.
• Quickly checking commissions, tips, or taxes without opening a spreadsheet.

Frequently asked questions