Math Calculators
Free math calculators — accurate, fast, and free of clutter.
3 Tools100% FreeNo sign-up
Percentage Calculator
Find a percentage of a number, a percentage increase or decrease, or what percent one number is of another, with the formula shown.
Percent of a numberPercentage changeWhat percent
Calculate now Scientific Calculator
A free online scientific calculator with sin, cos, tan, log, ln, powers, memory and a clear DEG/RAD switch, which causes many wrong answers.
TrigonometryLogarithmsMemory functions
Calculate now Fraction Calculator
Add, subtract, multiply and divide fractions and mixed numbers, with the common denominator step shown and every answer simplified.
All four operationsCommon denominator shownSimplification
Calculate now About math calculators
Each of these uses a verified, standard formula for its category — nothing invented, nothing rounded further than the underlying math requires.
Accurate results
Every calculator uses published, checkable formulas.
Easy to use
A simple interface with results as you type.
Free forever
No registration, no hidden fees.