Category
Math
Percentages, fractions, ratios, statistics, geometry.
18 calculators
Percentage Calculator
Percent of, % change, % increase/decrease.
Math
Discount Calculator
Sale price after a percentage off.
Math
Fraction Calculator
Add, subtract, multiply, divide fractions.
Math
Ratio Calculator
Solve and simplify ratios.
Math
Average (Mean) Calculator
Arithmetic mean of a list.
Math
Standard Deviation
Population and sample SD.
Math
Scientific Calculator
Trig, log, exp, parens.
Math
Square Root
Square roots and nth roots.
Math
Exponent Calculator
Powers and exponentiation.
Math
Circle Calculator
Area, circumference, diameter.
Math
Triangle Calculator
Area and side lengths.
Math
Rectangle Calculator
Area and perimeter.
Math
Cylinder Volume
Volume and surface area.
Math
Sphere Volume
Volume and surface area.
Math
Cube Root
Cube roots.
Math
Prime Number Checker
Test primality.
Math
LCM and GCF
Least common multiple, greatest common factor.
Math
Quadratic Equation
Solve ax² + bx + c = 0.
Math