Math Tools
Practical calculators for percent, pricing, and everyday math.
Percent Calculator
Free percent calculator to find percent of a number quickly. Useful for discounts, tax, and tips.
OpenPercent Increase Calculator
Free percent increase calculator. Find the percentage increase from an old value to a new value.
OpenPercent Decrease Calculator
Free percent decrease calculator. Find the percentage decrease from an old value to a new value.
OpenPercentage Change Calculator
Free percentage change calculator. Find percent change from one value to another.
OpenFAQ
- Do I need an account? No. Tools run locally in your browser.
- Are results exact? Standard formulas are used.