Mathematics
Percentages, averages and core math helpers.
11 tools
Percentage Calculator
Solve everyday percentage problems — find a percent, a share or a change.
Mathematics
Average Calculator
Find the mean, median, mode, sum and range of a list of numbers.
Mathematics
Fraction Simplifier
Reduce a fraction to its lowest terms and as a decimal.
Mathematics
Ratio Calculator
Solve a proportion A:B = C:D for the missing value.
Mathematics
LCM & GCD Calculator
Find the LCM and GCD (HCF) of a set of integers.
Mathematics
Quadratic Equation Solver
Solve ax² + bx + c = 0 with real or complex roots.
Mathematics
Right Triangle Calculator
Find the hypotenuse, area, perimeter and angles of a right triangle.
Mathematics
Circle Calculator
Find a circle’s area, circumference and diameter from the radius.
Mathematics
Percent Error Calculator
Calculate the percent error between an experimental and true value.
Mathematics
Standard Deviation Calculator
Find mean, variance and standard deviation of a data set.
Mathematics
Prime Number Checker
Check whether a number is prime and see its factors.
Mathematics