Overview
The Percentage Calculator combines core percent math with practical business use cases, including percent value, increase/decrease, ratio, difference, tip, discount, and tax estimation.
Key Features
- Basic percentage: calculate a percentage of any value.
- Increase or decrease: switch between increase, decrease, or both outputs.
- Ratio view: compute part-to-total percentage with a visual progress bar.
- Difference analysis: compare A vs B and B vs A with absolute difference.
- Practical calculators: tip, discount, and tax in one page.
- Quick references: apply common fractions such as 1/2, 1/3, and 3/4 with one click.
How To Use
- Enter numbers in the section that matches your scenario.
- Choose percentage mode or apply a reference value.
- Read the result instantly and adjust inputs as needed.
Use Cases
- Ecommerce pricing and campaign analysis.
- Finance checks and tax-related calculations.
- Data comparison for growth and share analysis.
- Everyday math such as tip and discount estimation.
Notes
- In ratio mode, the total value cannot be 0.
- When denominator is 0 in difference mode, infinite results can appear by math definition.
- All calculations run locally in your browser.