 |
|
| Conversion factors of the most important units of fps* - to the SI - system |
| |
fps |
SI (MKS) |
| Length |
1 ft = 1/3 yd = 12 in |
1ft = 0,3048 m; 1 mile = 1609,34 m |
| Area |
1 ft² = 144 in² |
1ft² = 0,092903 m² |
| Volume |
1 ft³ = 1728 in³ = 6,22882 gal (UK)
1 gal (US) = 0,83268 gal (UK) |
1ft³ = 0,0283169 m³
1 bu = 35,2393 l; 1 bbt (US) = 115,627 l |
| Speed |
1 ft/s
1 knot = 1,150785 mile/h =1,6877 ft/s |
1ft/s = 0,3048 m/s |
| Acceleration |
1 ft/s² |
1ft/s = 0,3048 m/s² |
| Mass |
1 lb = cwt/112; 1 sh tn = 2000 lb
1 slug = 32,174 lb; 1 in tn = 2240 lb |
1lb = 0,453592 kg
1 slug = 14,5939 kg |
| Force |
1 lbf
1 pdl = 0,031061 lbf |
1 lbf = 4,44822 N
1 pdl = 0,138255 N |
| Work |
1 ft lb = 0323832 calIT
1 btu = 252 calIT = 778,21 ft lb |
1 ft lb = 1,35582 J
1 btu = 1,05506 kJ |
| Pressure |
1 lb/ft² = 6,9444 x 10-3 lb/in²
1 lb/in² = 0,068046 atm
1 atm = 29,92 in Hg = 33,90 ft water |
1 lb/ft² = 47,88 N/m²
1 lb/in² = 6894,76 N/m²
1 atm = 1,01325 bar |
| Density |
1 lb/ft³ = 5,78704 x 10-4 lb/in³
1 lb/gal = 6,22882 lb/ft³ |
1 lb/ft³ = 16,0185 kg/m³
1 lb/gal = 99,7633 kg/m³ |
| Temperature |
32 deg F = 0°C; 212 deg F = 100°C |
1 deg F = 0,5556 °C |
| Power |
1 ft lb/s = 1,8182 x 10-3 hp
= 1,28505 x 10-3 btu/s |
1ft lb/s = 1,35582 W |
*fps - system: foot pound second-system
Abbrevations and names of English units
| atm |
atmoshere |
Published by kind permission of
Springer-Verlag, Heidelberg
from: Dubbel, Taschenbuch für den Maschinenbau (Mechanical Engineering Paperbock), 17th edition (1990)
Note:
The belt tensile force related to belt width is converted as follows:
1 piw = 0,175 N/mm |
| bbl |
barrel |
| btu |
British thermal unit |
| bu |
bushel |
| cwt |
hundredweight |
| cal |
calorie |
| degF |
degree Fahrenheit |
| ft |
foot |
| gal |
gallon |
| hp |
horsepower |
| in |
inch |
| lb |
pound |
| lbf |
pound force |
| ln tn |
long ton |
| pdl |
poundel |
| sh tn |
short ton |
| yd |
yard |
| UK |
United Kingdom |
| US |
United States of America |
| |
|
| in/s |
inch per second |
| in² |
square inch |
| in³ |
cubic inch |
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