Percentage Calculator
Calculate percentages, percentage changes, discounts, markups, taxes, and more⌘⏎ run · ⇧⌘C copy · ⎋ resetINPUTValue 1
OUTPUT
❯ _Run an operation to see results here.then press ⌘⏎
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What is Percentage Calculator?
The Percentage Calculator handles every common percentage question — percentage of a number, percentage change, discounts, markups and taxes — in your browser. Enter the values and it returns the answer with the formula, so you can check the working. All math is local and instant.
How to use it
- 01Pick the type of percentage calculation.
- 02Enter the two known values.
- 03Read the computed percentage or amount.
FAQ
How is percentage change calculated?
(new − old) / old × 100 — the tool shows the formula alongside the result.
Can it compute discounts and tax?
Yes — dedicated modes handle discounts, markups and tax add-ons.
Is my data stored?
No — everything runs locally.