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Percentage Calculator

What is X% of Y?

What is% of?
Result
5.00

X is what % of Y?

is what % of?
Result
12.50%

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About this Tool

Solve percentage problems in a snap. Whether you're calculating a discount, a tip, or a weird growth metric, this tool handles the math for you. Just enter the numbers and get the answer instantly.

Percentages are everywhere, but the formulas can be tricky to remember. This tool bundles the three most common percentage use cases into one simple interface, so you don't have to break out the scratch paper.

  1. Choose the calculation type (e.g., 'What is X% of Y?').
  2. Enter your numbers.
  3. See the result immediately.
  • Calculating sale prices when shopping.
  • Figuring out a tip at dinner.
  • Determining year-over-year growth for a report.
  • Checking test scores.
  • All Common Formulas: X% of Y, X is what % of Y, and % change.
  • Instant Results: No need to click 'calculate'.
  • Mobile Friendly: Perfect for quick math on the go.
  • Clean Interface: No confusing scientific keypad.

It applies standard algebraic formulas. For 'X% of Y', it's `(X/100) * Y`. For '% change', it's `((New - Old) / Old) * 100`.

How do I calculate a tip?

Use the 'What is X% of Y' mode. For a 20% tip on a $50 bill, enter 20% of 50.

Can I use decimals?

Yes, the tool supports precise decimal calculations.

What if the result is negative?

For percentage change, a negative result simply means a decrease (e.g., -5% means a 5% drop).

All calculations and data processing for this tool are performed locally in your browser. UtilToolkits does not send any of your data to an external server, ensuring your information remains private and secure.

Credits:Next.js•React•Tailwind CSS•Lucide Icons