Conversions (US to metric units)

If you correspond with anybody outside of the USA, please use metric units only!
Enter a value in the desired field and press the "Calculate" button.

Flow rate
gpm			m3/h
Mgd (Million gal/day)			ML/day
gpm			m3/h
gpm/ft3 (SV or specific flow rate)			BV/h
gpm/ft2 (LV, linear velocity)			m/h
ft/min			m/h
gsfd (gal/ft2/day) (flux)			L/(m2·h)

Volume
ft3			m3
US gallons			m3
gal/ft3			BV (bed volumes)

Length and area
ft			m
in			m
in			mm
ft2			m2

Pressure
psi (lb/in2)			kPa
psi			bar
psi/ft (per foot of bed depth)			kPa/m

Mass, regenerant dosage, concentration, capacity
lb (pounds)			kg
lb/ft3 (regenerant dosage)			g/L
ppm as CaCO3 (concentration)			meq/L
grain as CaCO3/US gal (conc.)			meq/L
kgr as CaCO3/ft3 (capacity)			eq/L

Temperature
°F (degrees Fahrenheit)			°C (deg. Celsius)

Mesh vs mm (particle size)

See separate table

Some conversion tools are also available on the Internet: (will open in a new page)
http://www.onlineconversion.com/
http://www.digitaldutch.com/unitconverter/

See also concentration and capacity units on this site, and how to write units properly.