FACTORS AND TABLES OF EQUIVALENTS USED IN FORESTRY 3 



Table 2. — Area or surface; unit conversion factors, with approximate values 



Square 

 inches 



Square 

 links 



Square 

 feet 



Square 

 yards 



Square 

 chains 



Acres 



Square 

 centi- 

 meters 



Square 

 meters 



Hectares 



Square 

 kilo- 

 meters 



1 



0. 015942 

 (Hs) 



1 



2. 29568^ 



20. 6612 

 (20) 



0. 006944 

 0. 4356 



M 

 l 



9 



0. 001076 



(Hooo) 



10. 76387 



(11) 



4,356 



43, 560 



27, 878, 400 



107, 638. 7 



10, 763, 867 









6. 451626 



(6/2) 



404. 6873 



929. 034 



8, 361. 3/ 



1 1 

 10, 000 



0. 000645 

 0. 040469 



(/25) 



0. 092903 



(Mi) 



0. 83613/ 



( 4 /5) 



0. 0001 



404. 687 



4, 046. 87 



(4,000) 



2, 589, 998 



10, 000 



1, 000, 000 







62 7264 





0. 0001 



0. 00025 



0. 002066 

 (tfoo) 



0. 00001 

 0. 000023 

 0. 000207 







(63) 

 144 



1,296 



155 



0.11111/ 



[HI 

 1 















1,550 



24. 7104 

 10, 000 



1. 19599 



(m) 



484 



4,840 



3, 097, 600 



11, 959. 8 



(12,000) 



1, 195, 985 



0. 00247/ 



(1/400) 

 2 1 



10 



6,400 



24. 7104 



(25) 



2, 471. 04 



0. 000247 

 0.1 



3 1 



640 

 2. 471044 



(2/2) 



247. 104 

 (250) 



0. 0001 



0. 040469 



0/2 5) 



0. 404687 



(%) 



258. 9998 



(260) 



1 



100 









Square 

 miles 







0. 000156 



[1/6400] 



0. 0015625 



[/640] 



1 



0. 00386/ 



(>250) 



0. 38610/ 



0. 000405 



(Hsoo) 



0. 004047 



(Mso) 



2.590 



(2%) 



0.01 



1 mm 2=0.01 cm 2=0.00155 square inch. 



2 1 square chain=16 square rods. 



3 1 acre=area 208.710 (210) feet square=3.16 chains square. 



Table 3. — Volume and capacity; unit conversion factors, with approximate values 



United States 

 measure of 

 volume 1 



United 



States 



dry 



measure, 



quarts 



United States apothecaries' and liquid 

 measure 2 



Metric system 



Cubic 



inches 



Cubic 



feet 



Fluid 

 ounces 



Pints 



Quarts 



Gallons 



Cubic 



centi- 

 meters 3 



Liters i 



Cubic 

 meters 



(steres) 



1 



0. 000579 



0. 01488/ 



25. 714 

 (26) 



0. 554113 



(M) 



957.5 



16 

 32 



128 



0. 033814 



(/so) 



33. 8147 



(34) 



0. 034632 



(1/30) 



59. 8442 



(60) 



0. 0625 



[Me] 



2 



8 



0.002113 



2. 11342 

 (2) 



0. 017316 



(Ho) 



29. 922/ 



(30) 



0. 03125 



[/32] 



0.5 



EM] 



4 



0. 001057 

 (Mooo) 

 1. 0567/ 



(1) 



1. 163647 



(1/e) 



37. 2387 



(37) 



1, 056. 68 

 (1,000) 



0. 004329 



7. 48052 

 (7M) 



16. 3872 



(16) 



28, 317 



29. 5737 



(30) 



473. 179 



(475) 



946. 359 



(950) 



3785. 43 



(4,000) 



» 1 



1, 000. 027 

 (1,000) 



1, 101. 23 

 35, 239. 28 

 1, 000, 000 



0. 016387 



(Ho) 



28. 316 



(28) 



0. 029573 



0/34) 



0. 473167 



(HO 



0. 946333 



(1) 



3. 785332 



(4) 



0. 0010 



(Mooo) 



1 



1. 101198 



35. 23833 



(35) 



999. 973 



(1,000) 





1,728 

 1. 80469 



0. 028317 

 (M35) 



(1*4) 



28. 875 





0. 429684 

 ( 2 /s) 



0. 859367 



( 5 /6) 



3. 43747 



0. 000908 



0. 908102 



32 



908. 078 

 (910) 



0.125 



[1/8] 



0.25 

 [H] 



81 





(30) 



57.75 

 (58) 

 231 



0. 06102? 



0. 033420 



(Ho) 



0. 13368/ 



0. 000946 

 0. 003785 

 000001 



(Me) 



61. 0250 



(61) 



0. 035315 



0. 038889 



(M25) 



1. 24446 



OH) 



35. 3145 

 (35) 



0. 264178 

 (U) 



0. 290912 



9. 309177 



(9) 



264. 170 



(265) 



0.00/ 

 (Mooo) 





Bushels 





67. 200625 



0. 03125 

 [1/32] 



8 1 



28. 3774 



00/ 



(67) 

 2, 150. 42 





(Mooo) 

 035239 







(Ho) 



8 1 









1 1 cubic yard = 27 cubio feet = 21.696 bushels = 0.764559 m 3 (stere). 



2 1 gill = 7.21875 cubic inches=4 fluid ounces=0.25 [M] liquid pint = 0.125 [}£] liquid quart=0.03125 [y 32 ] 

 gallon = 0.118292 liter. 



3 1 cubic millimeter =0.001 cm 3 =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. 



* 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. 



7 1 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. 



s 1 m 2 = 1.308 cubic yards. 



