Length

1 m = 10 ¹⁰ = 0 .1 nm

1 = 10 ^{? 10} m

1 mm = 0.0394 in.

1 in = 25.4 mm

1 cm = 0.394 in.

1 in = 2.54 cm

1 m = 3.28 ft

1 ft = 0.3048 m

Mass

1 Mg = 10 ³ kg

1 kg = 10 ^{? 3} Mg

1 kg = 10 ³ g

1 g = 10 ^{? 3} kg

1 kg = 2.205 lb _m

1 lb _m = 0.4536 kg

1 g = 2.205 10 ^{? 3} lb _m

1 lb _m = 453.6 g

Density

1 kg/m ³ = 10 ^{? 3} g/cm ³

1 g/cm ³ = 10 ³ kg/m ³

1 kg/m ³ = 0.0624 lb _m/ft ³

1 lb _m/ft ³ = 16.02 kg/m ³

1 g/cm ³ = 62.4 lb _m/ft ³

1 lb _m/ft ³ = 1.602 10 ^{? 2} g/cm ³

1 g/cm ³ = 0.0361 lb _m/in. ³

1 lb _m/in ³ = 27.7 g/cm ³

Force

1 N = 10 ⁵ dynes