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Percentage Calculator

Four percentage modes: X percent of Y, X is what percent of Y, increase or decrease, and change between two values. It runs entirely in your browser — no signup, no installation, and nothing you paste or drop leaves your device.

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Results are rounded to two decimals. One comma or dot is the decimal separator (12,5 or 12.5); thousands separators work in pairs, as in 1.234,56. The percentage change in the fourth mode is (B minus A) divided by the absolute value of A, so 100 to 80 is -20 percent.

Four Percentage Questions, One Calculator

This percentage calculator answers four questions, and the buttons above the fields decide which one is calculated. In the first mode you enter a percentage and a base value and get the amount it represents, for example 25 percent of 200. The second mode turns that around: two numbers go in, the share of the first in the second comes out, so 1 of 3 gives 33.33 percent. The third mode applies a change: type the change in percent, negative for a reduction, and you get the new value and the difference. The fourth mode reports the percentage change between two values, so 100 to 80 is -20 percent. Labels always show which number goes in which field, results round to two decimals, and 12,5 as well as 12.5 are accepted. Dividing by zero is reported as an error instead of an unlimited number. The tool does arithmetic only, draws no charts and stores nothing: it runs in your browser.

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What is Percentage Calculator?

Percentage Calculator is a free online calculator built for anyone planning a loan, investment, salary or purchase. Four percentage modes: X percent of Y, X is what percent of Y, increase or decrease, and change between two values In practice you choose one of the four modes, enter the two values the mode asks for, and then read the percentage result.

The figures you enter are calculated locally; no number is transmitted or stored, so the tool is safe for real salaries, loans and client figures.

How to use Percentage Calculator

  1. Choose one of the four modes.
  2. Enter the two values the mode asks for.
  3. Read the percentage result.

Percentage Calculator FAQ

Is Percentage Calculator free to use?

Yes. Percentage Calculator is completely free and needs no account, no trial and no payment details. Every feature on the page is available without limits.

Is my data uploaded anywhere?

No. Percentage Calculator runs entirely in your browser, so the text, file or number you enter never leaves your device.

Does Percentage Calculator work on a phone or tablet?

Yes. It works in any modern browser on desktop, tablet and phone. There is no app to install and no account to create.

How do I use Percentage Calculator?

Choose one of the four modes. Enter the two values the mode asks for. Read the percentage result.

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