Percentage Calculator Pro

Three percentage tools in one: X% of Y, X is what % of Y, and percent change.

Mode:

How to use

Pick a mode, enter the numbers and click Calculate. Everything runs in your browser — nothing is uploaded or stored.

How do I find 15% of 200?

Pick “X% of Y”, enter 15 and 200 — the answer is 30.

How do I calculate a percent increase?

Pick “Percent change” and enter the old and new values.

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Every tool runs 100% in your browser — no uploads, no signups. If a tool saved you time, consider supporting us with a small donation.