Unit Conversion
Convert between SI, imperial, and engineering units for length, area, volume, force, pressure, energy, temperature, and angular/speed quantities with step-by-step solutions.
Unit Conversion – SI, Imperial & Engineering Units
Comprehensive unit converters for all engineering domains: length, area, volume, force, pressure, energy, temperature, angular velocity, and speed.
Engineering Unit Systems
Engineering spans multiple unit systems — SI (International System), imperial (US customary), and various hybrid systems. Designers working with global suppliers must convert between mm and inches, MPa and psi, kJ and BTU, and °C and °F fluently. Errors from unit confusion are among the most common (and costly) mistakes in engineering, making reliable conversion tools essential.
Converters Available:
- 📏 Length, Area & Volume – mm↔in, m↔ft, cm²↔in², m³↔ft³, litres↔gallons, and more.
- ⚡ Force, Pressure & Energy – N↔lbf, Pa↔psi, kJ↔BTU, kW↔hp, with chart comparison.
- 🌡️ Temperature – Celsius↔Kelvin↔Fahrenheit↔Rankine with formula derivation.
- 🔄 Angular & Speed – RPM↔rad/s↔°/s, m/s↔km/h↔mph↔ft/s conversion.
Length / Area / Volume Converter
Convert between metric and imperial length, area, and volume units with step-by-step factor derivation.
Length
Millimetre (mm)
Metre (m)