Knowledge Centre

# ISWM Weights and Measures Tables

AVOIRDUPOIS OR COMMERCIAL WEIGHT
1 gross or long ton (l. tn.) = 2240 pounds
1 net or short ton (sh. tn.) = 2000 pounds
1 long hundred weight (l. cwt.) = 112 pounds
1 short hundred weight (sh. cwt.) = 100 pounds
1 pound (lb.) = 16 ounces (oz.) = 7000 grains (gr.)
1 ounce (oz.) = 16 drams (dr.) = 437.5 grains
APOTHECARIES’ WEIGHT
1 pound (lb. ap.) = 12 ounces = 5760 grains
1 ounce (oz. ap.) = 8 drams = 480 grains
1 dram (dr. ap.) = 3 scruples = 60 grains
1 scruple (s. ap.) = 20 grains
METRIC EQUIVALENTS AVOIRDUPOIS OR COMMERCIAL WEIGHT
1 long ton = 1.016 metric ton = 1016 kilograms
1 short tun = 0.9072 metric ton = 907.2 kilograms
1 pound av. = 0.4356 kilograms = 453.6 grams
1 ounce av. = 28.35 grams (g)
1 grain (gr.) = 0.0648 gram (g)
TROY WEIGHT
1 pound (lb. t.) = 12 ounces = 5760 grains
1 ounce (oz. t.) = 20 pennyweights = 480 grains
1 pennyweight (dwt.) = 24 grains
METRIC WEIGHT
1 metric ton (t) = 1000 kilograms
1 kilogram (or kilo) (kg) = 1000 grams = 10 hectograms
1 hectogram (hg) = 100 grams = 10 dekagrams
1 dekagram (dkg) = 10 grams
1 gram (g) = 10 decigrams
1 decigram (dg) = 10 centigrams
1 centigram (cg) = 10 milligrams (mg)
AVOIRDUPOIS EQUIVALENTS OF METRIC WEIGHT
1 ton (metric) = 0.9842 long ton = 2204.6 pounds av.
1 ton (metric) = 1.1023 short ton = 2204.6 pounds av.
1 kilogram = 2.2046 pounds av. = 35.274 ounces av.
1 gram = 0.03527 ounces av.
1 gram = 15.432 grains
TROY AND APOTHECARIES’ WEIGHTS EQUIVALENTSÂ IN AVOIRDUPOIS AND METRIC WEIGHT
1 pound Troy or apothecaries’ = 0.82286 pounds avoirdupois = 373.2 grams
1 ounce Troy or apothecaries’ = 1.09714 ounce avoirdupois = 31.103 grams
1 grain Troy or apothecaries’ = 1 grain avoirdupois = 0.0648 gram
1 pound avoirsupois = 1.21528 pound Troy or apothecaries’
1 kilogram (kg) = 0.911458 ounce Troy or apothecaries’
1 gram (g) = 0.0322 ounce Troy or apothecaries’
MEASURES OF LENGTH
1 mile (mi.) = 1760 yards = 5280 feet = 1.609 kilometers
1 yard (yd.) = 3 feet = 36 inches = 0.9144 meter
1 foot (ft.) = 12 inches = 304.8 millimeters
1 inch (in.) = 25.4 millimeters
1 kilometer (km) = 1000 meter
1 meter (m) = 10 decimeter = 3.2808 feet = 39.37 inches
1 decimeter (dm) = 10 centimeter = 3.937 inches
1 centimeter (cm) = 10 millimeter (mm) = 0.3937 inches
FLUID POWER EQUIVALENTS / EXACT EQUIVALENTS
1 U.S. gallon = 231 cubic inches
= 4 quarts or 8 pints
= 128 ounces (liquid)
= 133.37 ounces (weight)
= 8.3356 pounds
= 3.785 liters
Â 1 imperial gallon = 1.2 U.S. gallons
Â 1 Liter = 0.2642 U.S. gallons
Â 1 cubic foot = 7.48 gallons
= 1728 cubic inches
= 62.4 pounds (water)
= 760 mm Hg
1 Cu. ft. water = 62.4 pounds
1 Bar at sea level = 14.504 PSI
Approx. 1/2 PSI decrease each 1000 foot of elevation
1 “Hg = 0.490 PSI
= 1.131 ft. water
Â 1 horsepower = 33,000 ft. lbs. per minute
= 550 ft. lbs. per second
= 42.4 BTU per minute
= 2545 BTU per hour
= 746 watts or 0.746 kw
Â 1 PSI = 2.0416 “Hg
= 27.72 ” water
= 27.71 bar
Â 1 Atmosphere = 1.013 bars
= 29.921 “Hg
= 14.696 PSI
= 760 mm Hg
Â 1 Foot water column = 0.432 PSI
1 Foot oil column = 0.354 PSI
Â 1 Barrel oil = 42 gallons
Â 1 Micro-meter (micron) = 0.000001 meter
= 0.001 centimeter
= 0.00004 inch
25 Micro-meters = 0.001 inch
FLUID POWER EQUIVALENTS / APPROXIMATE EQUIVALENTS
1 Pint = 2 cups
2 cups = 32 tablespoons
32 tablespoons = 96 teaspoons
96 teaspoons = 16 fluid ounces
16 fluid ounces = 1 lb.
1 Quart = 4 cups
4 cups = 2 pints
2 pints = 32 fluid ounces
32 fluid ounces = 2 pounds
1 Gallon = 16 cups
16 cups = 4 quarts
4 quarts = 8 pints
8 pints = 128 fluid ounces
128 fluid ounces = 231 cubic inches
1 Cup = 16 tablespoons
16 tablespoons = 48 teaspoons
1 Tablespoon = 3 tsp.
3 tsp. = 1/2 fluid ounce
1 Fluid oz. (volume) = 600 drops hydraulic oil
1 Cubic inch = 330 drops (oil)
 FLUID POWER ABBREVIATIONS Â abs absolute (as in psia) Â A-C alternating current Â Bhn Brinell hardness number Â Btu British thermal unit Â C degrees Centigrade (Celsius) Â cc closed center Â ccw counter clockwise Â cfm cubic feet per minute Â cfs cubic feet per second Â cir cubic inches per revolution Â cim cubic inches per minute Â com common Â cpm cycles per minute Â cps cycles per second Â cu.in/rev cubic inches per revolution Â cw clockwise Â cyl cylinder Â dia diameter Â ext external Â F degrees Farenheit Â fl fluid Â fpm feet per minute Â ft foot Â ft-lb foot pound gal gallon Â gpm gallons per minute Â Hg Mercury Â HP horsepower Â Hz Hertz Â ID inside diameter Â in inch Â in-lb inch pound Â int internal Â ipm inches per minute Â ips inches per second Â lb pound Â max maximum Â min minimum Â mtd mounted Â NC normally closed Â NO normally open Â NPT national pipe thread Â NPTF dryseal pipe threads Â oc open center Â oz ounce Â P.O. pilot operated Â press pressure Â psi pounds per square inch Â psia psi absolute Â psig psi gauge Â pt pint Â qt quart Â r radius Â rms root mean square Â rpm revolutions per minute Â rps revolutions per second Â scfm standard cu. ft. per minute Â Smls seamless Â sol solenoid Â SSU Saybolt seconds universal Â SUS Saybolt universal seconds Â u micro-meters or microns Â T torque Â vac vacuum Â VI viscosity index Â visc viscosity

Interested to know more about the company/product or information, fill up the form below :

Legend

* Required