Units Used in Meteorology

Meteorological Unit Conversions


Length

1 meter (m) = 39.4 inches (in) = 3.28 feet (ft)

1 kilometer (km) = 1000 m = 0.62 miles (mi) = 3280 ft

1 nautical mile (nm) = 1.15 (mi) = 1852 m


Speed

1 m/s = 3.60 km/hr = 2.24 mi/hr = 3.28 ft/s = 1.94 knots (nm/hr)


Volume

1 m3 = 1x106 cm3 = 1000 liters (L) = 264 US Gallons


Time

1 day = 86,400 s

1 year = 365.25 days = 3.15x107 s


Pressure

1 millibar (mb) = 100 Pascals (Pa)

1 atm = 1013 mb = 760 mmHg = 29.9 inHg = 14.7 PSI


Temperature

°F = °C x 1.8 + 32

°C = (°F - 32) / 1.8


Degrees
Celsius
Degrees
Fahrenheit
30 86
25 77
20 68
15 59
10 50
5 41
0 32
-5 23
-10 14
-15 5
-17.8 0
-20 -2
-25 -11
-30 -20
-35 -29
-40 -38
-45 -47
-50 -56
-55 -65
-60 -74
-65 -83