Percentage Calculator
Calculate percentage of a number, percentage change, and differences. Three modes in one tool.
3 modesInstant resultsNo signup
Mode
Text stays on your device
Enter values to see the percentage result
Quick Reference
1% of 1001
10% of 20020
25% of 400100
50% of 800400
Documentation
What is percentage?
A percentage is a fraction of 100. It represents a proportion or rate per hundred.
When do you need it?
Discounts, tax calculations, grade calculations, statistics, and financial analysis.
How to use
- 1) Choose the calculation type (of, change, or difference).
- 2) Enter the required numbers.
- 3) View the result instantly.
FAQs
What can I calculate?
X% of Y, percentage increase/decrease, and what percent X is of Y.
What is percentage change?
(new - old) / old × 100. Shows how much a value increased or decreased.
Does it store my data?
No. All calculations happen locally in your browser. Your data is never uploaded or stored.
Is it free?
Yes. Completely free with no signup or limits.
Privacy: All processing runs in your browser. Nothing is stored.
Last updated: 2026-08-04
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