Percentage, ratio, and unit conversion calculators
Percentage, discount, ratio, fractions, statistics, and unit conversion calculators for practical number work.
The math category collects English calculators for percentage math, unit conversion, ratios, and quick calculations used in shopping, work, and study.
- Percentage CalculatorSolve percentage, ratio, increase or decrease, and discount calculations on one page.
- Unit ConverterConvert common length and volume units on one page.
- Discount CalculatorCalculate discount amount and final price from the original price and discount rate.
- Ratio CalculatorCalculate simplified ratios and compare values in ratio form.
- Profit Margin CalculatorCalculate gross profit, profit rate, and margin from cost and sales price.
- Statistics CalculatorCalculate descriptive statistics such as mean, median, variance, and standard deviation.
- Fraction CalculatorAdd, subtract, multiply, and divide fractions with simplified and decimal results.
- Square Root CalculatorCalculate square roots and related values from a single number.
- Logarithm CalculatorCalculate logarithms from a chosen base and value.