Percentage Calculator
Calculate percentages, increases, decreases and differences instantly.
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What is the Percentage Calculator?
The Percentage Calculator covers the four most common percentage questions: finding X% of Y, working out what percentage X is of Y, calculating a percentage increase or decrease, and recovering an original value from a percentage.
How to use it
- Choose the calculation mode that matches your question.
- Enter the required values into the input fields.
- The result updates instantly as you type.
Features
- X% of Y calculation
- What percentage is X of Y
- Percentage increase and decrease
- Original value recovery from a percentage
- Instant, real-time results
Privacy
All calculations happen locally in your browser. No values you enter are sent to a server.
Frequently Asked Questions
Use the Increase / Decrease tab, enter the starting (from) value and the ending (to) value, and the tool shows the percentage change automatically.
Use the Original Value tab: enter the discounted (resulting) value and the percentage it represents of the original to recover the original amount.