Powerful free calculators for equations, geometry, conversions, statistics, finance, and more.
Solve triangles using trigonometry fast.
Calculate mean, median, mode & more.
Solve linear systems instantly.
Find roots of any quadratic equation.
Convert any fraction instantly.
Convert numbers into scientific notation.
Compute area & perimeter for basic shapes.
Calculate circle area, radius & diameter.
Find percentage change between values.
Calculate exact years, months & days.
Find time since a specific date.
Calculate Body Mass Index easily.
Convert area and volume instantly.
Convert time units instantly.
Convert between °C, °F, and Kelvin.
Convert between kg, lbs & more.
Convert bytes, KB, MB, GB & more.
Calculate MPG, KM/L & mileage.
Find the weekday of any date.
Convert time between world time zones.
Convert timestamps to human-readable dates.