Math calculators
Free online percentage, fraction, and math calculators — the tools you actually reach for.
Tools for the small math problems that pop up during the day.
- Fraction Calculator
Add, subtract, multiply, and divide fractions. Results are automatically simplified to lowest terms with the mixed number and decimal equivalent shown.
- GPA Calculator
Calculate your term GPA from letter grades and credit hours. Optionally add your existing GPA and credits to compute your updated cumulative GPA.
- Percentage Calculator
Five common percentage problems in one place — find a percent of a number, express one number as a percent of another, calculate percent change, or increase/decrease a value by a percentage.
- Scientific Calculator
A full-featured scientific calculator with trigonometry, logarithms, exponents, factorials, memory functions, and keyboard support. Degrees and radians mode.