Money & work

Percentage calculator

Work out a percentage of a number, what percent one value is of another, or the change between two values.

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Copy this code and paste it into your page (WordPress, Wix, Webflow, HTML…). It's free: please keep the link to HOD Calc.

How it works

X% of Y = Y × X / 100. To find what percent X is of Y: X / Y × 100. The percentage change from X to Y is (Y − X) / X × 100.

Results are for guidance only and do not replace professional advice.

Worked example

With the default values:

  • I want to findX% of Y
  • Value X20
  • Value Y150

you get:

  • Result30
  • Working20 % × 150 / 100

Frequently asked questions

How does the “Percentage calculator” tool work?

X% of Y = Y × X / 100. To find what percent X is of Y: X / Y × 100. The percentage change from X to Y is (Y − X) / X × 100.

What do I need to enter?

Just fill in: i want to find, value x, value y. The result updates as you type.

Can you give an example?

I want to find: X% of Y; Value X: 20; Value Y: 150 → Result: 30; Working: 20 % × 150 / 100.

Is this calculator free, and is my data private?

Yes. HOD Calc is completely free with no sign-up. The calculation runs in your browser: nothing you type is sent or stored.