Acceleration

1 cm/s ² = 1.000 10 ^?2 m/s ²

1 m/h ²= 7.716 10 ^?8 m/s ²

1 ft/s ²= 0.3048 m/s ²

1 ft/h ² = 2.352 10 ^?8 m/s ²

Area

1 ha = 10 ⁴ m ²

1 acre = 4.047 10 ³ m ²

1 cm ²= 1.000 10 ^?4 m ²

1 ft ²= 9.290 10 ^?2 m ²

1 in ²= 6.452 10 ^?4 m ²

1 yard ² = 0.8361 m ²

1 square mile = 2.59 10 ⁶ m ²

Density

1 g/cm ³= 1000 kg/m ³

1 1b/ft ³ = 16.02 kg/m ³

1 kg/ft ³ = 35.31 kg/m ³

Energy, work, heat

1 cal = 4.187 J

1 kcal = 4187 J

1 Btu = 1055 J

1 erg = 1.000 10 ^?7 J

1 kWh = 3.600 10 ⁶ J

1 ft pdl = 4.214 10 ^?2 J

1 ft lbf = 1.356 J

1 Chu = 1899 J

1 therm = 1.055 10 ⁸ J

Force

1 dyne = 1.000 10 ^?5N

1 kgf = 9.807 N

1 pdl = 0.1383 N

1 lbf = 4.448 N

Heat flux

1 cal/s cm ²= 4.187 10 ⁴ W/m ²

1 kcal/h m ² = 1.163 W/m