Math, Science & Engineering
A complete collection of scientific and engineering calculation tools for students, educators, professionals, and enthusiasts. From basic unit conversions to advanced physics simulations, financial calculations, and specialized engineering tools. Solve equations, convert measurements, calculate loan payments, simulate physical phenomena, balance chemical equations, design electrical circuits, and estimate construction costs—all with accuracy and ease.
Convert between square meters, hectares, acres, square feet and more. Instant results with customizable decimal precision.
Convert between weight and mass units instantly. Supports metric (kg, g), imperial (lb, oz), troy weights for precious metals, and regional units.
Convert between metric, imperial, and other length units instantly. Supports 14 units from nanometers to light years.
Convert between data storage units including bytes, kilobytes, megabytes, gigabytes, and their binary equivalents (KiB, MiB, GiB).
Convert between time units instantly. From nanoseconds to millenniums, get accurate conversions for scientific, everyday, and calendar time units.
Measure objects on your screen in centimeters or inches with precise calibration. Place your item against the ruler and read the measurement.
Perform quick calculations with standard and scientific modes. Supports keyboard input, calculation history, and works on all devices.