Square millimetre

1 mm²

Square centimetre

1 cm² = 100 mm²

Square decimetre

1 dm² = 100 cm²

Square metre

1 m² = 100 dm²

Are

1 a = 100 m²

Hectare

1 ha = 100 a

1 inch = 25.4 mm

1 mm = 0.03937 inch

1 metre = 39.37 inch

1 micron = 0.00003937 inch

1 kilometre = 0.621 miles

1 pound = 453.6 g

1 kg = 2.205 lb

1 metric ton = 0.98 ton

1 Megapascal = 1 MPa = 1000000 Pa

1 Kilowatt = 1 kW = 1000 W

1 Hectolitre = 1 hL = 100 L

1 Decanewton = 1 daN = 10 N

1 Decimetre = 1 dm = 0.1 m

1 Centimetre = 1 cm = 0.01 m

1 Millimetre = 1 mm = 0.001 m

Length

1 m = 3.281 ft
1 km = 0.621 mile

1 ft = 0.3048 m
1 mile = 1.609 km

Speed

1 m/s = 3.281 ft/s
1 km/h = 0.621 mph

1 ft/s = 0.305 m/s
1 mph = 1.61 km/h

Acceleration

10¹²

1000000000000

tera

T

trillion times

10⁹

1000000000

giga

G

billion times

10⁶

Calorific Value

kilojoules per kilogram

kJ/kg

Specific Fuel Consumption

kilogram per hour per newton

kg/hr/N

Length

millimetre, metre, kilometre

Centigrade (°C)

0°C

100°C

Fahrenheit (°F)

32°F

212°F

Kelvin (K)

273 K

373 K

Reaumur (°R)

0°R

80°R

Pascal

1 Pa = 1 N/m²

Bar

1 bar = 10 N/cm²
= 100000 Pa

Atmosphere

1 atm = 101325 Pa
≈ 1.033 kgf/cm²

Torr

1 torr = 101325 / 760 Pa
≈ 133.32 Pa

kgf/cm²

1 kgf/cm² = 735.6 mm of Hg

Kilogram-force metre/second

1 kgf·m/s = 9.80665 W

Kilowatt

1 kW = 1000 W = 1000 J/s
≈ 102 kgf·m/s

Metric Horsepower

1 HP = 75 kgf·m/s
= 0.736 kW

Calorie

1 cal = 4.187 J

I.T. Kilocalorie per hour