Basic HTML Version
XXXI
UNITS OF MEASURE AND CONVERSION FACTORS
The following factors may be used to convert the metric and Thai unit published here in to the English
units.
Multiply metric or Thai units
By
To obtain English Unit
Length
millimeters (mm.)
.03973
inches (in)
meters (m.)
39.73
inches (in)
3.2808
feet (ft)
1.0936
yards (yd)
.1988
rods
kilometers (km)
.6214
miles (mi)
Area
square meters (m
2
)
10.76
square feet (ft
2
)
1.196
square yards (yd
2
)
2.47 x 10
-4
acres
rai (1,600 m
2
-
Thai)
.3952
acres
hectares (ha)
2.4709
acres
square hectometers (hm
2
)
2.4709
acres
square kilometers (km
2
)
247.1
acres
.3861
square miles (mi
2
)
Volume
liters ( l )
.2642
gallons (gal)
Cubic decimeters (dm
3
)
.2642
gallons (gal)
.03531
cubic feet (ft
3
)
cubic meters (m
3
)
264.2
gallons (gal)
2.642 x 10
-4
million gallons (10
6
gal)
35.31
cubic feet (ft
3
)
4.086 x 10
-4
cfs - day (ft
3
/ s - day)
8.11 x 10
-4
acre - feet (acre - ft)
cubic hectometers (hm
3
)
264.2
million gallons (10
6
gal)
408.6
cfs - day (ft
3
/ s - day)
811
acre - feet (acre - ft)
million cubic meters (mcm)
811
acre - feet (acre - ft)
cubic kilometers (km
3
)
811 x 10
3
acre - feet (acre - ft)