Appendix A. CONVERSION TABLES - TM-55-2320-273-140033

TM 55-2320-273-14

APPENDIX A

CONVERSION TABLES

curate to within 2 percent for quick computations:

1. Common Metric Abbreviations.

a. Inches to centimeters-- Multiply in. by 10 and di-

m = meter

vide by 4.

dm = decimeter

b. Yards to meters- Multiply yd by 9 and divide by

cm = centimeter

10.

mm = millimeter

c. Miles to kilometers-- Multiply mi by 8 and divide

kg = kilogram

by 5.

km = kilometer

d. Pounds to kilograms- Multiply lb by 5 and divide

MT = metric ton

by 11.

2. Linear Measure.

Paragraph 7-37, FM 55-15 and paragraph 2-15, TM

1 mi = 1,609.35 m

55-450-15 contain additional detailed conversion fac-

1 yd = 0.9144 m

tors.

1 ft = 0.3048 m

7. The following conversions are provided for guid-

1 in. = 0.0254 m

ance for procurement of lumber, wire rope, or wire in

lm = l0 dm = 100cm = l000 mm

areas that use the metric system. Lumber sizes are

1 km = 0.6214 mi

rounded to nearest 1/2 cm.

1 m = 1.0936 yd

a. Lumber.

1 m = 3.2808 ft

2-in. x 4-in. x desired length = 5-cm x 10-cm x de-

1 m = 39.3700 in.

sired length

3. Surface Measure.

1 yd = 0.8361 m2

l-in. x 6-in. x desired length = 2.5-cm x 15-cm x

1 ft2 = 0.0929 m

desired length

1 in.2 = 0.00065 m2

6-in. x 8-in. x desired length = 15-cm x 20-cm x de-

l m2 = 1.196 yd

sired length

l m2 = 10.764 ft2

l-in. x 12-in. x desired length = 2.5-cm x 30-cm x

l m = 1,550 in.2

desired length

4. Cubic Measure.

(length normally expressed in ft or m.)

b. Wire rope.

1 yd = 0.76455 m

1 ft3 = 0.02831 m

3/8-in. dia = 9.5-mm dia

1 in. = 0.000016 m

l/2-in. dia = 12.7-mm dia

1 m = 1.31 yd

5/8-in. dia = 15.8-mm dia

1 m = 35.30 ft

3/4-in. dia = 19.0-mm dia

1 m = 61,023 in.

7/8-in. dia = 22.2-mm dia

5. Weight.

l-in. dia = 25.4-mm dia

1 STON = 907.185 kg

l-1/4-in. dia = 31.7-mm dia

1 lb = 0.45359 kg

l-1/2-in. dia = 38.1-mm dia

1 kg = 2.2046 lb

Round to next higher whole mm of available wire rope

1 MT = 1,000 kg

sizes,

c. Wire. No. 8 gauge annealed (11/64-in. dia) =

1 MT = 2,204.62 lb

4.37-mm dia. Round off as in b above.

6. The following simplified conversion factors are ac-

A-1