🔢 Calculators

Percentage Calculator

Eight free percentage calculators in one place. Find what percent of a number is, calculate percentage change or difference, add or subtract a percentage, convert fractions and ratios to percent, and more. Instant results with the formula shown — no login, no limits, works entirely in your browser.

What is X% of Y?

Find a percentage of any number

What is % of

Enter values above and press Calculate

X is what % of Y?

Find the percentage one number is of another

is what % of

Enter values above and press Calculate

X is Y% of what?

Find the whole when you know a part and its percent

is % of what?

Enter values above and press Calculate

Percentage Change

Calculate % increase or decrease between two values

From to

Enter values above and press Calculate

Percentage Difference

Non-directional relative difference between two values

Value 1 Value 2

Enter values above and press Calculate

Add / Subtract a Percentage

Increase or decrease a number by a percent

%

Enter values above and press Calculate

Fraction / Ratio to Percent

Convert a fraction or ratio into a percentage

÷

Enter values above and press Calculate

Decimal to Percent

Convert any decimal number to a percentage

Decimal

Enter a decimal above and press Calculate

Results may vary. Always verify.

How to Use the Percentage Calculator

Choose the Right Panel for Your Problem

There are 8 calculator panels — each one solves a different type of percentage problem. Find the one that matches what you need: basic percent of a number, percentage change between two figures, converting a fraction, and more.

Enter Your Numbers

Type your values directly into the input fields. You can press Enter in any field to trigger the calculation immediately. The Add/Subtract panel has a ＋ / － toggle — click it to switch between adding and subtracting a percentage.

Read Your Result and Formula

Your answer appears in the result box along with the formula used to calculate it. This way you can verify the math or learn the method for next time. Percentage Change results are labeled as Increase or Decrease automatically.

Copy Your Result or Clear and Start Over

Use the Copy button to copy your result to the clipboard for pasting into a document, spreadsheet, or message. Use Clear to reset that specific panel without affecting the others.

Frequently Asked Questions

How do I calculate what percent one number is of another?

What is the formula for percentage change?

What is the difference between percentage change and percentage difference?

How do I add or subtract a percentage from a number?

How do I convert a fraction, ratio, or decimal to a percent?

Disclaimer: QuickITTools.com and EnterPlanet LLC strive to make our tools as accurate as possible. Results may vary — always verify.