Percentage Calculator

% Percentage Calculator

Calculate percentages, increases, decreases and ratios.

What is X% of Y?

X (%) of Y

X is what % of Y?

X of Y

Percentage Change (A → B)

From (A)

To (B)

About the Percentage Calculator

The Percentage Calculator handles the everyday percentage questions: what is X% of Y, what percent is X of Y, and percentage increase or decrease between two numbers.

It saves you from second-guessing the formula.

How to use it

Choose the type of percentage question.
Enter your numbers.
Read the answer instantly.

Every tool on SEOKeyMaster is 100% free, works right in your browser, and requires no signup or API key. Your data never leaves your device.

Frequently Asked Questions

How do I calculate percentage change? ▼

(new − old) ÷ old × 100 — the tool does this for you.

Can it do discounts? ▼

Yes — use percentage decrease to find a sale price.