Category / 28 tools
Math calculators
Percentages, averages, ratios, and change.
Percentage Calculator
What is X percent of a number.
Percent Change Calculator
The percentage increase or decrease between two numbers.
Average (Mean) Calculator
The mean, sum, and count of a list of numbers.
Ratio Calculator
Simplify a ratio to its lowest terms.
Exponent Calculator
Raise a number to any power.
Square Root Calculator
The square root and cube root of a number.
Logarithm Calculator
Log of a number in any base, plus natural log.
GCD & LCM Calculator
Greatest common divisor and least common multiple of two numbers.
Triangle Area Calculator
Area of a triangle from its base and height.
Circle Area Calculator
Area and circumference of a circle from its radius.
Cylinder Volume Calculator
Volume of a cylinder from its radius and height.
Sphere Volume Calculator
Volume and surface area of a sphere from its radius.
Box Volume Calculator
Volume of a rectangular box from length, width, and height.
Pythagorean Theorem Calculator
The hypotenuse of a right triangle from its two legs.
Slope Calculator
The slope of a line between two points.
Quadratic Equation Calculator
Real roots of ax^2 + bx + c = 0.
Permutation & Combination Calculator
Permutations (nPr) and combinations (nCr) of n items taken r.
Factorial Calculator
The factorial (n!) of a whole number.
Standard Deviation Calculator
Mean, variance, and standard deviation of a list of numbers.
Fraction Calculator
Add two fractions and simplify the result.
Scientific Notation Converter
Convert a number to and from scientific notation.
Rounding Calculator
Round a number to a chosen number of decimal places.
Midpoint Calculator
The midpoint of a line segment between two (x, y) points.
Distance Between Points Calculator
Straight-line distance between two points using the distance formula.
Percent of Total Calculator
What percent one number is of another — and the difference.
Mean Median Mode Calculator
Mean, median, mode, and range from a list of numbers.
Trapezoid Area Calculator
Area of a trapezoid from its two parallel sides and height.
Modulo Calculator
The remainder and quotient when dividing one integer by another.