Unit conversion

About this tool

A quick-reference converter for the unit families that come up most often in mechanical, process, and plant engineering work — sizing equipment, checking a vendor datasheet, or converting a field reading into the unit your calculation expects.

How it works: pick a quantity along the top, enter a value in any unit, and every other unit in that family updates at once. Click a row to make it the new reference unit, or click a value to copy it to the clipboard. The strip above the table always shows the exact factor used, referenced to that quantity's SI base unit.

• Mechanical: length, mass, force, torque, area, volume, velocity, acceleration, angle
• Process & thermal: pressure, energy, power, temperature, heat flux, thermal conductivity, heat transfer coefficient, specific heat capacity
• Fluids: flow rate, density, dynamic viscosity, kinematic viscosity
• Electrical: voltage, current, resistance, charge, capacitance, inductance, magnetic flux density
• Acoustics: sound pressure level, sound power level, sound intensity level (dB, log scale)