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Unit Converter

SI to US

Area

1 mm² = 0.001550 in²

1 m² = 10.76 ft² = 1550 in²

Acceleration

1 m/s² = 3.281 ft/s² = 39.37 in/s²

1 g = 32.17 ft/s² = 9.807 m/s²

(average at earth's surface)

Mass

1 kg = 0.0685 slug

1 t (metric tonne) = 1,000 kg = 68.5 slug

Force

1 N = 0.2248 lb

1 kN = 0.2248 kip = 224.8 lb

Power

1 W = 1 N-m/s = 0.7376 ft-lb/s

1 W = 0.001341 hp

Time

1 min = 60 s

1 hr = 60 min = 3,600 s

1 day = 24 hr = 86,400 s

Density

1 kg/m³ = 0.001940 slug/ft³

Temperature

T_C = (5/9) (T_F - 32)

T_K = T_C + 273.15 (Kelvin)

Pressure

1 Pa = 1 N/m² = 0.0209 lb/ft² = 1.45×10^-4 psi

1 bar = 100,000 Pa

1 MPa = 1,000 kPa = 0.1450 ksi

1 GPa = 1,000 MPa = 0.1450 msi

1 atm = 101.3 kPa = 760 mmHg

Length

1 m = 3.281 ft = 39.37 in.

1 km = 0.6214 mi

Volume

1 mm³ = 6.102×10^-5 in³ = 3.531×10^-8 ft³

1 m³ = 6.102×10⁴ in³ = 35.31 ft³

1 liter = 0.2642 gal

1,000 liter = 1 m³

Velocity

1 m/hr = 3.281 ft/hr

1 km/hr = 0.2778 m/s = 0.6214 mi/hr = 0.9113 ft/s

Work/Energy

1 J = 1 N-m = 0.7376 ft-lb

Angle

1 rad = 180/π deg = 57.30 deg

1 deg = π/180 rad = 0.01745 rad

1 rev = 2π rad = 360 deg

1 rev/min (rpm) = 0.1047 rad/s

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