
Conversion Factors
SI to Inch/Pound
Multiply 
By 
To obtain 
Length 
centimeter (cm) 
0.3937 
inch (in.) 
meter (m) 
3.281 
foot (ft) 
meter (m) 
1.094 
yard (yd) 
kilometer (km) 
0.6214 
mile (mi) 
kilometer (km) 
0.5400 
mile, nautical (nmi) 
Conductivity 
siemens per meter (S/m) 
1 
mho per meter (mho/m) 
Pressure 
decibar (dbar) 
10000 
pascal (Pa) 
millibar (mb) 
100 
pascal (Pa) 
hectopascal (hPa) 
0.0009869 
atmosphere, standard (atm) 
hectopascal (hPa) 
0.001 
bar 
Flow 
meter cubed per second (m^{3}/s) 
35.3147 
foot cubed per second (ft^{3}/s) 
centimeter per second (cm/s) 
0.03281 
foot per second (ft/s) 
meter per second (m/s) 
3.281 
foot per second (ft/s) 
Temperature in degrees Celsius (°C) may be converted to degrees Fahrenheit (°F) as follows:
°F=(1.8×°C)+32
Temperature in degrees Fahrenheit (°F) may be converted to degrees Celsius (°C) as follows:
°C=(°F32)/1.8
Wind direction is the direction the wind is coming from in degrees clockwise from true north.
Wave direction is the direction from which waves are propagating, measured clockwise from true north.
Wave period (length of time taken by one cycle) is given in seconds.
Salinity is given in practical salinity units (psu). 