Percentage Calculator
Calculate percentage values, increase/decrease rates, and percentage of numbers.
Enter values and click Calculate.
Overview
Calculate percentage-of, ratio percentage, and change rate quickly for pricing, analytics, and reporting tasks.
How to use
- Choose calculation mode.
- Enter values A and B.
- Run calculation and read the formula output.
Examples
-
Discount
Input: 20% of 500
Output: 100
-
Growth rate
Input: Old 80 -> New 100
Output: +25%
Notes
- Division by zero is invalid.
- Round rules can differ by business context.
- Always verify units before calculation.
FAQ
- Can it handle negative values?
- Yes, but interpretation depends on your use case.
- Why small decimal differences?
- Floating-point rounding may appear in edge cases.
- Is this financial-grade exact?
- Use domain-specific rounding policies for production finance.
Embed this tool
Paste this iframe into any HTML page to embed Percentage Calculator on your site:
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