Quick reference — common conversions
Length
1 in = 25.4 mm
1 ft = 304.8 mm
1 m = 3.2808 ft
1 mile = 1.6093 km
1 ft = 304.8 mm
1 m = 3.2808 ft
1 mile = 1.6093 km
Force
1 kgf = 9.8067 N
1 lbf = 4.4482 N
1 kN = 0.2248 kip
1 tf = 9.8067 kN
1 lbf = 4.4482 N
1 kN = 0.2248 kip
1 tf = 9.8067 kN
Pressure / Stress
1 MPa = 145.04 psi
1 bar = 100 kPa
1 atm = 101.325 kPa
1 kgf/cm² = 0.0981 MPa
1 bar = 100 kPa
1 atm = 101.325 kPa
1 kgf/cm² = 0.0981 MPa
Torque
1 N·m = 8.8507 lbf·in
1 N·m = 0.7376 lbf·ft
1 kgf·m = 9.8067 N·m
1 N·m = 0.7376 lbf·ft
1 kgf·m = 9.8067 N·m
Temperature
°F = °C × 9/5 + 32
K = °C + 273.15
0 °C = 32°F = 273.15 K
K = °C + 273.15
0 °C = 32°F = 273.15 K
Power
1 hp (metric) = 735.5 W
1 hp (imperial) = 745.7 W
1 kW = 1.3596 hp (metric)
1 hp (imperial) = 745.7 W
1 kW = 1.3596 hp (metric)
Energy
1 kWh = 3600 kJ
1 kcal = 4.1868 kJ
1 BTU = 1.0551 kJ
1 kcal = 4.1868 kJ
1 BTU = 1.0551 kJ
Angle
1 rad = 57.296°
1° = π/180 rad
1 rev = 360° = 2π rad
1 grad = 0.9°
1° = π/180 rad
1 rev = 360° = 2π rad
1 grad = 0.9°