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Weights - Measurements & Conversions
Common weights, measurements, metric equivalents, and conversion factors used in veterinary medicine.
Equivalent Measures of Length
1 meter (m) 39.37 inches (in.)
1 centimeter (cm) 0.39 in.
1 millimeter (mm) 0.039 in.
1 yard (yd) 91.44 centimeters (cm)
1 foot (ft) 30.48 cm
1 inch (in.) 2.54 cm
Household Measures (Approximate)
1 drop 1/20 mL
1 teaspoon 5 mL
1 tablespoon 15 mL
1 cup 250 mL
Weight and Apothecaries' Equivalents
1 milligram (mg) 1/65 grain (1/60)
1 gram (g) 15.43 grains (15)
1 kilogram (kg) 2.20 pounds (avoirdupois)
1 pound (avoirdupois) 453.6 grams
1 grain (gr) 0.065 gram (60 mg)
1 ounce (1/16 pound) 28.4 grams
Fluid Equivalents
1 fluid ounce (oz.) 29.57 mL (30)
1 pint (pt.) 16 fl. oz.) 473.2 mL (500)
1 pint, In the Imperial system 20 fluid ounces
1 quart (qt.) 946.4 mL (1000)
1 quart, In the Imperial system 40 fluid ounces
1 gallon (gal.) 3785.6 mL (4000)
1 gallon, In the Imperial system 160 fluid ounces
Metric System Weights and Measures
1 kilogram (kg) 1000 grams (103)
1 milligram (mg) 0.001 gram (10-3)
1 microgram (µg) 0.000001 gram (10-6)
1 liter (L) 1000 mL (103)
1 milliliter (mL) 0.001 L (10-3)
1 microliter (µL) 0.000001 L (10-6)
1 milliliter (ml) 1 cubic centimeter (cc)

Weight - Unit Conversion Factors
Units Given Units Wanted For Conversion Multiple By
lb g 453.6
lb kg 0.4536
oz g 28.35
kg lb 2.2046
kg mg 1,000,000
kg g 1,000
g mg 1,000
g µg 1,000,000
mg µg 1,000
mg/g mg/lb 453.6
mg/kg mg/lb 0.4536
µg/kg µg/lb 0.4536
Mcal kcal 1,000
kcal/kg kcal/lb 0.4536
kcal/lb kcal/kg 2.2046
ppm µg/g 1
ppm mg/kg 1
ppm mg/lb 0.4536
mg/kg % 0.0001
ppm % 0.0001
mg/g % 0.1
g/kg % 0.1

Conversion Formulas

Gallons into Pounds: Multiply the specific gravity of the liquid by 8.33* (weight in pounds of 1 gallon of water); then multiply this result by the number of gallons, to obtain the weight in pounds.

Pounds into Gallons: Multiply the specific gravity of the liquid by 8.33* (weight in pounds of 1 gallon of water); then divide the number of pounds by the result, to obtain the volume in gallons.

Milliliters into Grams: Multiply the specific gravity of the substance by the number of milliliters, to obtain the weight in grams.

Grams into Milliliters: Divide the number of grams by the specific gravity of the substance, to obtain the volume in milliliters.

Milliliters into Pounds: Multiply the number of milliliters by the specific gravity of the substance; then divide the product by 453.59 (equivalent in grams of 1 avoirdupois pound), to obtain the weight in pounds.

Pounds into Milliliters: Multiply the number of pounds by 453.59 (equivalent in grams of 1 avoirdupois pound); then divide the product by the specific gravity of the substance, to obtain the volume in milliliters.

Milliliters into Ounces: Multiply the number of milliliters by the specific gravity of the substance; then divide the product by 28.35 (equivalent in grams of 1 avoirdupois ounce), to obtain the volume in ounces.

Ounces into Milliliters: Multiply the number of ounces by 28.35 (equivalent in grams of 1 avoirdupois ounce); then divide the product by the specific gravity of the substance, to obtain the volume in milliliters.

Grains, Drams, and Ounces into Grams (or mL): 1) Divide the number of grains by 15; or 2) multiply the number of drams by 4; or 3) multiply the number of ounces by 28.35. The result in each case equals the approximated number of grams (or mL).

Kilograms into Pounds: Multiply the number of kilograms by 2.2046, or multiply the number of kilograms by 2 and add 10% to the product.

Pounds into Kilograms: Divide the number of pounds by 2.2046, or multiply by 0.4536

*10 for imperial gallons

 

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