Math Calculator for Your Site

Embed a versatile math calculator on your website. Great for educational platforms, tutoring sites, or any content that involves mathematical calculations.

Embed This Calculator on Your Website

Copy the code below and paste it into your website's HTML. The calculator will appear exactly as shown below.

300px1200px
300px1200px
<iframe
  src="http://localhost:45678/percentage"
  width="640"
  height="520"
  frameborder="0"
  scrolling="auto"
  title="Math Calculator for Your Site"
></iframe>
How to embed:
  1. Click Copy Code above to copy the embed snippet.
  2. Open your website's HTML editor or CMS (WordPress, Wix, Squarespace, etc.).
  3. Paste the code where you want the calculator to appear.
  4. Adjust width and height above to fit your layout.
  5. Save and publish — the calculator will be live on your page.

Live Preview

This is exactly what your visitors will see when the calculator is embedded.

Percentage Calculator

Please provide any two values below and click the Calculate button to get the third value.

Percentage Calculator

Fill in any two of the three fields and leave one empty. Click Calculate to solve for the missing value.

% of=

Percentage Calculator in Common Phrases

Three quick phrase-based calculators — each has its own Calculate and Clear button.

a) What is _% of _?

What is% of?

b) _ is what % of _?

is what % of?

c) _ is _% of what?

is% of what?

Percentage Difference Calculator

Calculates the percentage difference between two values relative to their average (symmetric — order does not matter).

Value 1
Value 2

Percentage Change Calculator

Fill in any two of the three fields (Start, Percentage, End) and leave one empty. The direction (Increase / Decrease) is auto-detected when computing the percentage.

Start value
Direction
Percentage
%
=
End value

Calculate percentages instantly with our free percentage calculator. Whether you need to find a percentage of a number, calculate a percentage increase or decrease, or figure out what percentage one number is of another, this tool handles it all.

How Percentage Calculations Work

Find X% of Y: Result = (X ÷ 100) × Y

Find what percentage X is of Y: Percentage = (X ÷ Y) × 100

Percentage increase/decrease: ((New Value − Old Value) ÷ Old Value) × 100

How to Use This Calculator

  1. Select the type of percentage calculation you need
  2. Enter your values into the input fields
  3. Click Calculate to see your result instantly

Frequently Asked Questions

How do I calculate a percentage increase?

Subtract the original value from the new value, divide by the original value, then multiply by 100. Going from 50 to 65 is a 30% increase.

How do I find the original price before a discount?

Divide the discounted price by (1 − discount percentage as a decimal). E.g. $80 after a 20% discount means original price was $80 ÷ 0.80 = $100.

What's the difference between percentage points and percentage?

Percentage points refer to the arithmetic difference between two percentages, while percentage change refers to the relative change.

Can this calculator handle percentage of a percentage?

Yes, you can chain calculations by using the result of one percentage calculation as the input for another.