Unit Converters

Find fast, accurate, and easy-to-use unit converters for everyday measurements, technical work, study, travel, and electrical calculations.

Fast conversion tools

rulerunit provides focused converters for common measurement types such as length, mass and weight, temperature, volume, area, speed, time, and data storage.

Each converter is designed for quick input, automatic results, unit swapping, copying, recent history, and favorite conversions.

Electrical unit converters

Electrical units are organized by physical quantity, including current, voltage, resistance, power, energy, capacitance, inductance, frequency, and charge.

This structure avoids incompatible conversions such as volts to amperes while keeping symbols such as Ω, µ, k, M, and G clear.

Built for repeat use

The interface supports dark mode, multiple languages, browser-based history, and local favorites so frequent conversions stay efficient.

Everything runs client-side, which keeps the experience fast and simple to host as a static production website.