Unidades físicas

Comprimento

1 m	1000 mm	39.4 in	1.09 yd
1 cm	10 mm	0.394 in
1mm		39.4 mils
1 µm	0.001 mm	0.039 mils
.
1 yard	914 mm	3 ft	36 in
1 foot	305 mm		12 in
1 in	25.4 mm		1000 mils
1 mil	0.0254 mm	25.4 µm

Area / Superfície

1 m2	10'000 cm2	10.9 ft2	1.196 yd2
1 cm2	100 mm2	0.155 in2
1mm2		0.00155 in2
.
1 sqyd	0.836 m2	8'351 cm2
1 sqft	0.0929 m2	929 cm2
1 sqin	6.45 cm2	645 mm2

Volume

1 m3	1'000 l	35.3 ft3
1 l	1'000 cm3	0.264 US-Gal	0.220 Imp Gal
1 cm3	1'000 mm3
.
1 US-Gal	3.785 l
1 Imp Gal	4.546 l
1 cu-ft	28.3 l
1 cu-in	16.4 cm3

Peso / Força 1)

1 kg	9.81 N	2.205 lb	35.3 oz
1 g	0.001 kg	0.981cN
1N	0.102 kg	102 g
.
1 lb	0.454 kg	4.45 N	16 oz
1 oz	28.35 g	27.8 cN	0.063 lb

Força linear

1 kp/cm	5.59 lb/in
1 lb/in	0.179 kp/cm

Pressão

1 kg/cm2	1.00 bar	100 kPa	14.23 lb/in2
1 bar	1.00 kg/cm2	1'000 mbar	0.100 MPa
1PA	0.01 mbar	1.00 N/m2	0.120 mm CA
1 kPa	10.0 mbar	10.0 mbar	102 mm CA
1 MPa	10.0 bar	1.00 N/mm2
1 m WC 2)	98.1 mbar	39.4 in WC	9.81 kPa
1 psi	0.0703 bar	5'900 Nm2	6.90 kPa
1 psi	70.3 mbar

Concentrações

1 g/l	0.1 WW %
1 g/kg	0.1 WW %
1ppm	1 mg/kg	0.001 g/kg	1 g/ton
1 lb/US Gal	120 g/l
1 lb/Imp Gal	100 g/l

Permeabilidade do ar

1 l/m2/s@200 Pa (3)	0.600 l/dm2/min@200 Pa (3)
1 l/m2/s@200 Pa (3)	3.60 m3/m2/h@200 Pa (3)
1 l/m2/s@200 Pa (3)	~0.123 ft3/ft2/min@125 Pa (4) (5) (6)
1 ft3/ft2/min@125 Pa (4) (6)	~8.13 l/m2/s@200 Pa (3) (5)
1 l/dm2/min@200 Pa (3)	1.67 l/m2/s@200 Pa (3)
1 l/dm2/min@200 Pa (3)	6.00 m3/m2/h@200 Pa (3)
1 l/dm2/min@200 Pa (3)	~0.205 ft3/ft2/min@125 Pa (4) (5) (6)
1 ft3/ft2/min@125 Pa (4) (6)	~4.88 l/dm2/min@200 Pa (3) (5)
1 m3/m2/h@200 Pa (3)	0.278 l/m2/s@200 Pa (3)
1 m3/m2/h@200 Pa (3)	0.167 l/dm2/min@200 Pa (3)
1 m3/m2/h@200 Pa (3)	~0.0342 ft3/ft2/min@ Pa (4) (5) (6)
1 ft3/ft2/min@125 Pa (4) (6)	~29.3 m2/m2/h@200 Pa (3)

Temperatura

°C = (°F -32) x 5 / 9	°F = (°C x 9 / 5) +32