Online Unit Converter
Instantly convert between 27 categories and 160+ units across 7 groups. Length, weight, temperature, electrical, energy, and more.
Basic Unit Conversions
Common units for daily life — length, weight, temperature, area, volume, speed, and time.
7 converters · 56 units
Mechanical Units
Force, torque, and pressure conversions for engineering and physics.
3 converters · 19 units
Data & Storage Units
Data storage sizes and network bandwidth conversions.
2 converters · 18 units
Electrical Units
Voltage, current, resistance, capacitance, charge, and inductance conversions.
6 converters · 26 units
Energy & Power
Energy, power, and fuel consumption unit conversions.
3 converters · 19 units
Light & Lighting Units
Illuminance, luminance, luminous flux, and luminous intensity conversions.
4 converters · 11 units
Advanced Units
Angle and frequency conversions for math, science, and engineering.
2 converters · 11 units
Why Use Our Unit Converter?
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100% Accurate
Built with precise conversion factors from international SI standards. No rounding errors.
Works Offline
All calculations happen in your browser. No data is sent to any server.
Mobile Friendly
Fully responsive design that works perfectly on phones, tablets, and desktops.