4 MISC. PUBLICATION 225, U. S. DEPT. OF AGRICULTURE 



Table 4. — Weight; unit conversion factors, with approximate values 





Avoirdupois weight 2 



Troy and apothecaries' weight 



Metric system 



Grains 1 



Drams 



Ounces 



Pounds 



Drams 



Ounces 



Pounds 



Milli- 

 grams 



Grams 



Kilo- 

 grams 



, 



0. 03657 

 (Mr) 



1 



16 

 256 



2. 194285 



(2) 

 17. 55429 



210. 65/ 



0. 000564 



0. 584385 



0. 002285 



0. 0625 



[Me] 



31 



16 

 0. 137143 



(MO 



1. 09714 

 (1) 



13. 1657 

 (13) 



0.000143 



[Mooo] 



0. 003905 



(Mso) 



0. 0625 



[Me] 



0. 008571 



0. 06857 



(Mo) 



0. 822857 



(%) 



0. 016667 

 [Mo] 



0. 45573 



(M) 



7. 292 



116. 667 



1 



8 



96 



0. 000257 



0. 257205 



0. 00208-3 



(Moo) 



0. 056965 



0. 911-5 



14. 5833 

 (14M) 

 0.125 



M 



i 



12 



0. 000174 



0. 004747 



(Mio) 



0. 075955 



(Ma) 



1. 21528 



(1M) 



0. 010417 



[Me] 



0. 083333 



[M2] 



64. 7989 

 (65) 



0. 064799 



(Ms) 



1. 771845 



28. 34953 



(28) 



453. 592 



. (450) 



3. 887935 



(4) 



31. 10348 



(31) 



373. 2418 



(375) 



0.001 



1 





27. 34375 





437.5 









(440) 

 7,000 



0. 453592 



60 





(M) 



480 







5,760 





373242 



0. 015432 



'1 



1,000 



( 2 o) 



(Mo) 



15. 43235 



(15) 



0. 035274 

 (Ms) 



0. 002205 



100 

 2,000 

 2, 240 



2, 204. 6.2 



2. 204622 

 (2M0 



0. 03215/ 

 (Ho) 



0. 00267-9 



0.001 





Milliers, 



tonnes, or 



metric 



tons 







Hundred- 

 weight 



Short 

 tons 



Long 

 tons 







1 



20 



22.4 



22. 05 



0. 022045 



0.05 



[Ho] 



1 



1.12 



(IMo) 

 1. 10231/ 



(IMo) 

 0. 001102 



0. 04-5 



(Mo) 



0. 89286 



( 9 /lo) 



1 



0. 984206 

 0. 000984 



0. 045359 

 (Mo) 



0. 90718 

 ( 9 /lo) 



1. 01605 



(1) 



0.001 



45. 35924 











(45) 

 907. 1849 











(900) 

 1, 016. 05 











(1,000) 

 1,000 



1 



15, 432. 4 



35. 27395 

 (35) 



2. 679228 

 (2M) 



1,000 



1 The grain is common to avoirdupois, troy, and apothecaries' systems. 



2 British units include 1 hundredweight (long, or one-twentieth long ton) =4 quarters=8 stone=112 

 pounds = 50.8 kg; 1 stone=14 pounds=6.35 kg. 



3 1 ounce (avoirdupois) = 0.001 cubic foot of water at 16.7° C, or 62.06° F. 

 i 1 metric carat = 200 mg= 3.08647/ grains, 

 s 1 tonne =10 quintals =100 myriagrams. 



Table 5. — Velocity; unit conversion factors, with approximate values 



Feet per 



Feet per 



I\Jiles per 



Knots per 



Meters per 



Meters per 



Kilometers 



minute 



second 



hour 



hour 



minute 



second 



per hour 



1 



0. 016667 



0. 011364 



0. 009868 



0. 30480/ 



0. 00508 



0. 0182S8 





[Mo] 



(Moo) 



(Moo) 



(M3) 



(Moo) 



(Mo) 



60 



1 



0. 681818 



0. 592086 



18. 2880 



0. 30480/ 



1. 0973 







( 2 o) 



( 3 /o) 



(18) 



(Ms) 



(1.1) 



88 



1. 46667 



1 



0. 868393 



26.8225 



0. 44704/ 



1. 60935 





(1H) 





(MO 



(27) 





(l?o) 



101. 337 



1. 68894 



1. 15155 



I 



30. 8875 



0. 51479/ 



1. 85325 



(100) 



am 



GM) 





(31) 



(M) 



(IMO 



3. 28083 



0. 05468/ 



0. 037282 



0. 032376 



1 



0. 016667 



0.06 



(3M) 



(Mo) 



(Mr) 



(Mo) 





[Mo] 



(Mr) 



196. 850 



3. 28083 



2. 236932 



1. 94253 



60 



1 



3.6 



(200) 



(3M) 



(2M) 



(2) 









54. 6806 



0. 911343 



0. 621370 



0. 539593 



16. 6667 



0. 27778 



1 



(55) 



(1) 



( 5 s) 



(M) 



(17) 



(M) 





