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TM 9-254
5-3.
Measurement Units - Continued
Table 5-4. U.S. System to Metric System Conversion - Continued
U.S. system unit
Metric equivalent
Weight
grain
64.79891 milligrams
dram
1.772 grams
ounce
28.350 grams
pound
453.59237 grams
ton (short)
0.907 metric ton
5-4.
Conversion Factors.
Table 5-5 lists the multiplying factors needed to convert from one unit of measure to another. Locate the units of measure
to be converted in the first or second column. Use the third column to convert units in the first column to units in the
second column. Use the fourth column to convert units in the second column to units in the first column.
Table 5-5. Conversion Factors
Conversely,
To convert
Into
Multiply by
multiply by
Acres
Square feet
4.356 X 104
2.296 X 10-5
Acres
Square meters
4047
2.471 X 10-4
Acres
Square miles
1.5625 X 10-3
640
Amperes
Microamperes
106
10-6
Amperes
Picoamperes
1012
10-12
Amperes
Milliamperes
103
10-3
Amperes-hours
Coulombs
3600
2.778 X 10-4
Ampere-turns
Gilberts
1.257
0.7958
Ampere-turns
Ampere-turns per in.
2.54
0.3937
per cm.
Angstrom units
Inches
3.937 X 10-9
2.54 X 108
5-4
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