Conversion factors for SI units
Measurement Unit Multiplier SI unit
Area in^2
ft^2
yd^2
acre
acre
6.
0.
0.
0.
4047
cm^2
m^2
m^2
ha
m^2
Flow ft^3 /s
gal/min
gal/d
mgd
ft^3 /m0.
0.
4.4x10-
0.
43.
0.m^3 /s
L/s
L/s
m^3 /s
L/s
L/s
Heat Btu
Btu
Btu
hp
1.
2.928 × 10-
0.
745.
kJ
kWh
kcal
watt