#US Customary Units

Length and Weight of a Steel Rod in SI Units

Mass of a Crate from F = ma in U.S. Units

Moment of a Force in kip·ft and kN·m

Gravitational Constant in U.S. Customary Units

Calculations with SI Prefixes

Moment and Torque Converter

Convert moments and torques between N·m, N·mm, kN·m, lbf·in, lbf·ft, kip·ft, kgf·m and more, with exact factors and the steps shown.

Force Converter

Convert forces between newtons, kilonewtons, pound-force, kips, kilogram-force and more, with exact factors and the conversion steps shown.

Volume Converter

Convert volumes between mL, liters, m³, in³, ft³, U.S. and imperial gallons and more, with exact factors and the conversion steps shown.

Mass and Weight of a Machine Part

Unit Conversion Method Examples and Conversion Tables

Convert any unit with ratios equal to 1: step-by-step examples from length to temperature, and full conversion tables for 12 engineering quantities.

Area Converter

Convert areas between mm², cm², m², in², ft², acres, hectares and more, with exact factors and the conversion steps shown.

Concrete Slab: Weight, Floor Load and Equivalent Steel Plate

Length Converter

Convert lengths ( mm, cm, m, km, in, ft, yd, mi, ...) between metric and U.S. units, including feet and inches, with exact factors and the conversion steps shown.