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



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





Avoirdupois weight 2 



Troy and apothecaries' weight 



Metric system 



Grains ' 



Drams 



Ounces 



Pounds 



Drams 



Ounces 



Pounds 



Milli- 

 grams 



Grams 



Kilo- 

 grams 



1 



0. 03657 



16 



256 



2. 194286 



(2) 



17. 55429 



210. 65; 



0. 000564 



0. 564383 



0. 002286 



0. 0625 



[Me] 

 3 1 

 « 

 16 



0. 137143 



(MO 



1. 09714 



(1) 



13. 1657 



(13) 



0. 000143 



[Mooo] 



0. 003906 



(Mso) 



0. 0625 



[He] 



1 



0. 008571 



0. 06857 



(Ho) 



0. 822857 



(Vo) 



0. 016667 



[Ho] 



0. 45573 



(H) 



7.292 



116. 667 



8 



96 



0. 000257 



0. 257206 



0. 002083 



(Moo) 



0. 056966 



0. 9115 



14. 5833 

 (14H) 

 0.125 



M 

 l 



12 



0. 000174 



0. 004747 



(Hio) 



0. 075955 



(Ms) 



1. 21528 



(IMO 



0. 010417 



[He] 



0. 083333 



[Hl2] 



1 



64. 7989 

 (65) 



0. 064799 



(Ms) 



1. 771845 



28. 34953 



(28) 



453. 59? 



(450) 



3. 887935 



(4) 



31. 10348 



(31) 



373.2418 



(375) 



0.001 



1 





27 34375 





437 5 







(440) 

 7,000 





0. 45359? 



60 





(H) 



480 









5 760 



0. 37324? 



0. 01543? 



4 J 



1,000 



m 



(Ms) 



15. 43236 

 (15) 



0. 035274 



0/28) 



0. 002205 



100 



2,000 



2,240 



2, 204. 6? 



2. 20462? 

 (2H) 



0. 03215/ 



(Ho) 



0. 002679 



0.001 





Milliers, 



tonnes, or 



metric 



tons 







Hundred- 

 weight 



Short 

 tons 



Long 

 tons 







1 



20 



22.4 



22.05 



0. 022046 



0.05 



[Ho] 



1 



1. 12 



(IMo) 



1. 102311 



(IMo) 



0.00110? 



0. 045 



(Ho) 



0. 89286 



(Mo) 

 1 



0. 984206 



0. 000984 



0. 045359 

 (Ho) 



0. 90718 

 (Mo) 



1. 01605 



(1) 

 si 



0.001 



45. 35924 











(45) 

 907. 1849 











(900) 

 1, 016. 05 











(1,000) 

 1,000 



15, 432. 4 



35. 27396 

 (35) 



2. 679228 

 (2H) 



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. 

 < 1 metric carat =200 mg=3.086471 grains. 



5 1 tonne=10 quintals = 100 myriagrams. 



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



Feet per 



Feet per 



Miles per 



Knots per 



Meters per 



Meters per 



Kilometers 



minute 



second 



hour 



hour 



minute 



second 



per hour 



1 



0. 016667 



0. 011364 



0. 009868 



0. 304801 



0. 00508 



0. 018288 





[Mo] 



(Hoo) 



(Hoo) 



(Mo) 



(Hoo) 



(Ho) 



60 



1 



0. 681818 



0. 592086 



18. 2880 



0. 304801 



1. 0973 







m 



(MO 



(18) 



(Mo) 



(1.1) 



88 



1. 46667 



i 



0. 868393 



26.8225 



0. 447041 



1. 60935 





(1H) 





(MO 



(27) 





(1M0 



101. 337 



1. 68894 



1. 15155 



1 



30. 8875 



0. 514791 



1. 85325 



GOO) 



(1%) 



(1H) 





(31) 



(H) 



(1%) 



3. 2808? 



0. 054681 



0. 03728? 



0. 032376 



1 



0. 016667 



0.06 



(3H) 



(Ho) 



(Hi) 



(Ho) 





[Ho] 



(Ht) 



196. 850 



3. 2808-3 



2. 23693? 



1. 94253 



60 





3.6 



(200) 



(3M) 



(2J4) 



(2) 









54. 6806 



0. 911343 



0. 621370 



0. 539593 



16. 6667 



0. 27778 



1 



(55) 



(1) 



(H) 



(H) 



(17) 



(M) 





