Math & Statistics Calculators
Algebra, geometry, stats and number theory
Percentage Calculator Every common percentage question in one place — of, change, and reverse. Statistics Calculator Mean, median, mode, range, variance and standard deviation for a data set. Geometry Calculator Area, perimeter, volume and surface area for common shapes and solids. Ratio Calculator Simplify ratios, scale them, and solve proportions for a missing term. Permutation & Combination Calculator nPr, nCr and factorials, with the ordering distinction made clear. Probability Calculator Single and combined event probability, plus odds conversion. GPA Calculator Credit-weighted grade point average on the standard 4.0 scale. Number Base Converter Convert between binary, octal, decimal and hexadecimal. Scientific Calculator A full expression calculator with functions, constants and precedence.