Percentage Calculator
What is X% of Y, and what percent is A of B. Numbers only. Copy sits next to the result.
Percent of a number
A is what percent of B
How it works
Enter numbers
Use the left pair for X% of Y, or the right pair for A is what percent of B. Only digits, a decimal point or comma, and a leading minus are accepted.
Read the result
The value updates as you type. 15% of 200 is 30. 30 is 15% of 200.
Copy the result
Copy sits next to the result field.
What is a percentage calculator?
A percentage is a number out of 100. X% of Y scales Y by X/100. Asking what percent A is of B compares A to B as a share of 100. This page does both, with number-only fields and a copy button next to the result.
Why use this tool
- X% of Y, and A is what percent of B
- Numbers only. Comma or dot as the decimal
- Copy next to the output. Updates as you type
- No account. Unlimited on the free plan
- Both formulas visible with no mode switch needed
Questions
What does Percentage Calculator do?
It answers two questions: what is X% of Y, and A is what percent of B.
How do I use Percentage Calculator?
Fill one pair with numbers. The result updates as you type. Copy sits next to the result.
What is the formula?
X% of Y is (X ÷ 100) × Y. A as a percent of B is (A ÷ B) × 100. Example: 15% of 200 is 30, and 30 is 15% of 200.
Can I type letters?
No. Fields accept digits, one decimal separator (dot or comma), and an optional minus at the start.
What if the whole is zero?
A percent of B needs B ≠ 0. The right-hand result shows that you cannot divide by zero.
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When to use Percentage Calculator
Percentage Calculator is one of those utilities you open for a few minutes, finish the task, and close without leaving a trail of uploads. What is X% of Y, and what percent is A of B. Results update as you type so you can compare scenarios quickly without installing a separate app. Because Percentage Calculator is bilingual on Easy24, the same workflow works in English or Turkish without changing how the tool behaves. Browser-first processing is the privacy default here: there is no Easy24 document inbox waiting to expire after a timeout for this workflow. This page has no daily free-plan cap, so you can run it as often as you need. When you are done, download or copy what you need, then close the tab. Related tools on the page cover common follow-up steps such as the reverse conversion or a neighboring format.
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