PercentSwift tool

What Percent Calculator

Use this calculator to answer questions like 30 is what percent of 150.

Calculator

Enter your numbers

Result

Enter values to calculate

The formula will appear here.

Examples

Common calculations

  • 30 is 20% of 150
  • 25 is 12.5% of 200
  • 5 is 10% of 50

Turning a part into a rate

Use it when you know the part and the whole, and need the percentage rate between them.

FAQ

What Percent Calculator questions

What is the formula?

Use (part / whole) x 100.

Can the whole be zero?

No. The whole cannot be zero because division by zero is undefined.