Length Conversions
- 1 inch = 25.4 mm = 2.54 cm
- 1 foot = 0.3048 m = 12 inches
- 1 mile = 5280 ft = 1.609 km
- 1 meter = 3.281 ft = 39.37 inches
- 1 kilometer = 0.6214 miles
Mass and Weight Conversions
- 1 kg = 2.205 lbm = 1000 g
- 1 slug = 14.59 kg = 32.17 lbm
- 1 lbm = 0.4536 kg = 453.6 g
- 1 metric ton = 1000 kg = 2205 lbm
Force Conversions
- 1 N = 0.2248 lbf = 1 kg*m/s^2
- 1 lbf = 4.448 N
- 1 kN = 224.8 lbf
- 1 kip = 1000 lbf = 4.448 kN
Pressure Conversions
- 1 atm = 101.325 kPa = 14.696 psi
- 1 bar = 100 kPa = 14.504 psi
- 1 psi = 6.895 kPa
- 1 atm = 760 mmHg = 29.92 inHg
- 1 MPa = 145.04 psi
Energy and Power Conversions
- 1 J = 1 N*m = 0.7376 ft*lbf
- 1 kJ = 0.9478 BTU
- 1 BTU = 1.055 kJ = 778.2 ft*lbf
- 1 hp = 550 ft*lbf/s = 745.7 W
- 1 kW = 1.341 hp = 3412 BTU/hr
Temperature Conversions
- F = (9/5)*C + 32
- C = (5/9)*(F - 32)
- K = C + 273.15
- R = F + 459.67
- R = 1.8*K
Volume and Flow Rate Conversions
- 1 gallon = 3.785 liters = 231 in^3
- 1 liter = 0.2642 gallons = 61.02 in^3
- 1 m^3 = 264.2 gallons = 35.31 ft^3
- 1 ft^3 = 7.481 gallons = 28.32 liters
- 1 cfm = 0.4720 liters/s