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Technical information
Imperial/Metric Conversion Table
Common conversion factors from imperial units to metric SI units:
Length
- 1 inch = 25.4mm
- 1 foot = 0.3048m
- 1 yard = 0.9144m
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Area
- 1 in² (square inch) = 645.16mm²
- 1 ft² (square foot) = 0.0929030m²
- 1 yd² (square yard) = 0.836127m²
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Volume,capacity
- 1 in³ (cubic inch) = 16.3871cm³
- 1 ft³ (cubic foot) = 0.0283168m³
- 1 yd³ (cubic yard) = 0.764555m³
- 1 Pint = 0.568261m³
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Velocity
- 1 ft/min = 0.00508m/s or
- 0.3048m/min
- 1 ft/s = 0.3048m/s
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Mass
- 1 oz = 28.3495g
- 1 lb = 0.45359237kg
- 1 ton (2240lb) = 1016.05kg
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Thermal Conductivity
- 1 Btu ft/ft²h°F = 1.73073 W/m°C
- (Jm/m²s°C)
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Volume rate of flow
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Thermal capacity per unit mass, specific heat capacity
- 1 Btu/lb°F = 4186.8 J/kg°C
- 1 ft lbf/lb°F = 5.38032J/kg°C
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Specific energy, specific latent heat
- 1 Btu/lb = 2326 J/kg
- 1 ft lbf/lb = 2.98907 J/kg
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Density
- 1 lb/in³ = 27.6799Mg/m³
- 1 lb/ft³ = 16.0185 kg/m³
- 1 lb/gal = 99.7763kg/m³
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Specific entropy
- 1 Btu/lb°R = 4186.8 J/kg K
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Energy, work, quantity of heat
- 1 therm = 105.506 MJ
- hph (horsepower x hour) = 2.68452 MJ
- 1 kWh = 3.6MJ
- 1 Btu (British thermal unit) = 1.05506kJ
- 1 cal (calorie I.T.) = 4.1868J
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