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APPENDIX C
UNITS OF MEASURE AND CONVERSION FACTORS
This appendix provides conversion tables for units of measure and conversion factors that are used in military operations.
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12 inches
36 inches
3 feet
1,760 yards
2,026.8 yards
5,280 feet
6,080.4 feet
63,360 inches
72,963 inches |
=
=
=
=
=
=
=
=
= |
1 foot
1 yard
1 yard
1 mile statute
1 mile nautical
1 mile statute
1 mile nautical
1 mile statute
1 mile nautical |
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Table C-1. English system of linear measure.
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1 millimeter
10 millimeters
10 centimeters
10 decimeters
10 meters
10 decameters
10 hectometers
10 kilometers |
=
=
=
=
=
=
=
= |
centimeter
centimeter
decimeter
meter
decameter
hectometer
kilometer
1.0 myriameter |
=
=
=
=
=
=
=
= |
0.0393 inches
0.3937 inches
3.937 inches
39.37 inches
32.81 feet
328.1 feet
0.62 mile
6.21 miles |
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Table C-2. Metric system of linear measure.
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1 mil
1 grad
1 degree |
=
=
= |
1/6400 circle
1/400 circle
1/360 circle |
=
=
= |
0.05625°
16.0 mils
about 17.8 mils |
=
=
= |
0.0625 grad
0°54' = 0.9°
about 1.1 grad |
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Table C-3. Equivalent units of angular measure.
| ONE |
INCHES |
FEET |
YARDS |
STATUTE MILES |
NAUTICLE MILES |
mm |
| Inch |
1 |
0.0833 |
0.0277 |
- |
- |
25.40 |
| Foot |
12 |
1 |
0.333 |
- |
- |
304.8 |
| Yard |
36 |
3 |
1 |
0.00056 |
- |
914.4 |
| Statute Mile |
63,360 |
5,280 |
1,760 |
1 |
0.8684 |
- |
| Nautical Mile |
72,963 |
6,080 |
2,026 |
1.1516 |
1 |
- |
| Millimeter |
0.0394 |
0.0033 |
0.0011 |
- |
- |
1 |
| Centimeter |
0.3937 |
0.0328 |
0.0109 |
- |
- |
10 |
| Decimeter |
3.937 |
0.328 |
0.1093 |
- |
- |
100 |
| Meter |
39.37 |
3.2808 |
1.0936 |
0.0006 |
0.0005 |
1,000 |
| Decameter |
393.7 |
32.81 |
10.94 |
0.0062 |
0.0054 |
10,000 |
| Hectometer |
3,937 |
328.1 |
109.4 |
0.0621 |
0.0539 |
100,000 |
| Kilometer |
39,370 |
3,281 |
1,094 |
0.6214 |
0.5396 |
1,000,000 |
| Myriameter |
393,700 |
32,808 |
10,936 |
6.2137 |
5.3959 |
10,000,000 |
| ONE |
cm |
dm |
M |
dkm |
hm |
km |
mym |
| Inch |
2.540 |
0.2540 |
0.0254 |
0.0025 |
0.0003 |
- |
- |
| Foot |
30.48 |
3.048 |
0.3048 |
0.0305 |
0.0030 |
0.0003 |
- |
| Yard |
91.44 |
9.144 |
0.9144 |
0.0914 |
0.0091 |
0.0009 |
- |
| Statute Mile |
160,930 |
16,093 |
1,609 |
160.9 |
16.09 |
1.6093 |
0.1609 |
| Nautical Mile |
185,325 |
18,532 |
1,853 |
185.3 |
18.53 |
1.8532 |
0.1853 |
| Millimeter |
0.1 |
0.01 |
0.001 |
0.0001 |
- |
- |
- |
| Centimeter |
1 |
0.1 |
0.01 |
0.001 |
0.0001 |
- |
- |
| Decimeter |
10 |
1 |
0.1 |
0.01 |
0.001 |
0.0001 |
- |
| Meter |
100 |
1 |
1 |
0.1 |
0.01 |
0.001 |
0.0001 |
| Decameter |
1,000 |
10 |
10 |
1 |
0.1 |
0.01 |
0.001 |
| Hectometer |
10,000 |
100 |
100 |
10 |
1 |
0.1 |
0.01 |
| Kilometer |
100,000 |
1,000 |
1,000 |
100 |
10 |
1 |
0.1 |
| Myriameter |
1,000,000 |
10,000 |
10,000 |
1000 |
100 |
10 |
1 |
Table C-4. Conversion factors.
Example I
| Problem: | Reduce 76 centimeters to (?) inches.
76 cm x 0.3937 = 29 inches |
| Answer: | There are 29 inches in 76 centimeters. |
Example II
| Problem: | How many feet are there in 2.74 meters? |
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|
| Answer: | There are approximately 9 feet in 2.74 meters. |
| SCALE |
1 INCH EQUALS |
1 CENTIMETER EQUALS |
| 1:5,000 |
416.67 feet
127.00 meters |
164.00 feet
50.00 meters |
| 1:10,000 |
833.33 feet
254.00 meters |
328.10 feet
100.00 meters |
| 1:12,500 |
1,041.66 feet
317.00 meters |
410.10 feet
125.00 meters |
| 1:20,000 |
1,666.70 feet
508.00 meters |
656.20 feet
200.00 meters |
| 1:25,000 |
2,083.30 feet
635.00 meters |
820.20 feet
250.00 meters |
| 1:50,000 |
4,166.70 feet
1,270.00 meters |
1,640.40 feet
500.00 meters |
| 1:63,360 |
5,280.00 feet
1,609.30 meters |
2,078.70 feet
633.60 meters |
| 1:100,000 |
8,333.30 feet
2,540.00 meters |
3,280.80 feet
1,000.00 meters |
| 1:250,000 |
20,833.00 feet
6,350.00 meters |
8,202.00 feet
2,500.00 meters |
| 1:500,000 |
41,667.00 feet
12,700.00 meters |
16,404.00 feet
5,000.00 meters |
Table C-5. Ground distance at map scale.
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