Math calculators
Percentages, averages, fractions, and ratios. The percentage calculator covers “X% of Y”, the reverse, and percentage change, with a short reference table.
Percentages (of, reverse, and change), averages, fractions, and ratios. Start here when the question is pure arithmetic.
Percentage Calculator · Average Calculator · Fraction Calculator · Ratio Calculator
Percentage Calculator
Work out a percentage of a number, the reverse (“X is what percent of Y?”), or how much a value has gone up or down.
Average Calculator
Paste a list of numbers to see the arithmetic mean, the median, the sum, how many values you entered, and the range.
Fraction Calculator
Add, subtract, multiply, or divide two fractions, then read the simplified fraction, a mixed number, and a decimal.
Ratio Calculator
Simplify a ratio, share a total in that ratio, or fill in a missing term in a proportion.
Related guides
- How to Calculate Percentages
- Percentage Increase vs Percentage Decrease
- How to Calculate Percentage Difference