FACTORS AND TABLES OF EQUIVALENTS USED IN FORESTRY 
TaBLE 2.—Area or surface; unit conversion factors, with approximate values 
Square 
Square 
inches links 
1 | 0.015942 
(463): 
62. 7264 1 
(63) 
144 | 2. 295684 
1, 296 20. 6612 
(20) 
O), Wy jes oe 
1 
1,550 | 24.7104 
10, 000 
11 mm 2=0.01 em 2=0.00155 square inch. 
Square 
feet 
0. 001076 
(ooo) 
10. 76387 
(11) 
4, 356 
43, 560 
27, 878, 400 
107, 638. 7 
10, 763, 867 
Square 
yards 
1. 19599 
(1%) 
484 
4, 840 
3, 097, 600 
11, 959. 8 
(12,000) 
1, 195, 985 
21 square chain=16 square rods. . 
3 1 acre=area 208.710 (210) feet square=3.16 chains square. 
Square 
chains 
0. 0001 
0. 00023 
0. 002066 
(¥o00) 
0. 002471 
(400) 
21 
10 
6, 400 
24. 7104 
(25) 
2, 471. O4 
0. 00001 
0. 000023 
0. 000207 
0. 006247 
0.1 
34 
640 
2. 471044 
(214) 
247. 104 
(250) 
Square 
centi- 
meters 
6. 451626 
(675) 
404. 6873 
929. 034 
8, 3861. 31 
14 
10, 060 
Square 
meters 
0. 040469 
(%5) 
0. 092903 
(41) 
0. 836131 
(4%) 
0. OGOL 
1 
Square 
miles 
0. 000156 
[4640c] 
0. 0015625 
620) 
0. 003861 
(450) 
0. 386101 
(2%) 
404. 687 
4, 046. 87 
(4,000) 
2, 589, 998 
10, 060 
1, 000, 000 
Hectares 
Square 
kilo- 
meters 
0. 040469 
(45) 
0. 404687 
(%) 
258. 9998 
(260) 
1 
100 
0. 000465 
(4500) 
0. 004047 
(1450) 
2. 590 
(234) 
mea 
a) 
on 
( 
TABLE 3.—Volume and capacity; unit conversion factors, with approximate valucs 
United States 
measure of 
volume ! 
Cubie Cubie 
inches feet 
United 
States 
dry 
measure, 
quarts 
1 | 0.000579 | 0.014881 
1, 728 
1. 80469 
0. 061023 
(es) 
61. 0250 
(61) 
67. 260625 
(67) 
2, 150. 42 
5] 
0. 035316 
0. 038889 
(4s) 
1. 24440; 
(144) 
35. 3145 
(35) 
0. 429684 
(25) 
0. 859367 
(6) 
3. 43747 
0. 000908 
0. 908102 
p 
32 
908. 078 
(910) 
United States apothecaries’ and liquid 
measure 2 
Fluid 
ounces 
128 
0. 033814 
(%o) 
33. 8147 
(34) 
Bushels 
0. 03125 
[142] 
8 
28. 3774 
Pints 
0. 002113 
2. 11342 
(2) 
Quarts 
0. 001057 
(000) 
1. 05671 
(1) 
1, 056. 63 
(1,000) 
Gallons 
0. 004329 
7. 48052 
(744) 
0. 264178 
(44) 
0. 280912 
9, 309177 
(9) 
264. 170 
(265) 
Metric system 
Cubic 
centi- 
meters 3 
29. 5737 
(30) 
473. 179 
1, 000. 027 
(1,000) 
1, 101. 23 
35, 239. 28 
1, 000, 000 
Cubic 
Liters 4 meters 
(steres) 
OROLG3S 7 |e 
(0) 
28. 316 0. 028317 
(28) (145) 
OR O29 a5 al eee 
(Ya) 
OR47SG7 4 eee ae 
(4) 
0. aes 0. 000$46 
1 
3. 785332 0. 003785 
(4) (1265) 
0. 5010 0. OOOGGL 
(4000) 
1 0. OC/ 
(4 000) 
1. 101198 . 0. 607 
(4000) 
35. 23833 0. 03526) 
(35) (40) 
999. 973 9 
(1,000) 
1 1 cubic yard=27 cubic feet = 21.696 bushels=0.764559 m 3 (stere). 
? 1 gill=7.21875 cubic inches=4 fluid ounces=0.25 [4] liquid pint=0.125 [44] liquid quart=0.03125 [42] 
galion =0.118292 liter. 
3 1 cubic millimeter=0.001 cm 2=0.00006/ cubic inch. 
4 1 liter= volume pure water at 4° C. and 760 mm pressure weighing 1 kg =0.028378 bushel=0.001308 cubic 
yard. 
5 1 cubic foot =0.80356 bushel=0.037037 cubic yard. 
6 The British imperial gallon=10 pounds distilled water at 62° F. (and barometer at 30 inches) = 277.418 
cubic inches=1.20094 U.S. gallons=0.16054 cubic foot = 4.545963 liters. 
71 cubic centimeter =0.999973 milliliter (ml). 
8 The British imperial bushel=8 British gallons=2219.340 cubic inches=1.032050 United States bushels= 
36.37 liters. 
91m 3=1.308 cubic yards. 
3 
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