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> General Reporting Questions > How Do I Convert Units of Measure?
How do I convert units of measure?
Dangerous Waste is reported on the Annual Report forms in tons, pounds,
kilograms, or gallons. Ecology's guidance for calculating Quantity Exclusion
Limits (QELs) and Generator Status uses pound measurements.
Use the conversion factors and examples in the following tables if you need
to convert your waste amounts from one unit of measure to another.
How to Get Pounds from Tons or Cubic
Yards 
Unit of Measure You Have 
Multiply the Quantity by the
Conversion Factor 
Example 
Short
Tons 
Multiply
by 2,000
(1 ton =
2000 lbs) 
3 short
tons, multiplied by 2,000 = 6,000 pounds 
Metric
Tons 
Multiply
by 2,200
(1
metric ton = 2200 lbs) 
5 metric
tons, multiplied by 2,200 = 11,000 pounds 
Cubic
yards 
If
density is measured in pounds per cubic yard: multiply by the density 
3 cubic
yards of contaminated soil, multiplied by 2,700 (density of soil) =
8,100 pounds 
Cubic
yards 
If you do not know the density, use
the following as a guideline:
DENSITY
MATERIAL (pounds per cubic yard)
Clay 2,100
Slag (blast furnace)
2,200
Earth/Soil 2,700
Limestone 2,700
Sand, dry/loose
2,700
Sand, wet/packed
3,200 
How to Get Pounds from Kilograms 
Unit of Measure You Have 
Multiply the Quantity by the Conversion Factor 
Example 
Micrograms 
Multiply by 0.0000000022
1 microgram = 0.0000000022 or (2.2e9) pound 
300 micrograms multiplied by 0.0000000022 = 0.00000066 pounds.
Note: micrograms are used in laboratory measurements. 
Milligrams 
Multiply by 0.0000022
1 milligram = 0.0000022 pound 
500 milligrams multiplied by 0.0000022 = 0.0011023 pounds
Note: milligrams are used in laboratory measurements. 
Centigrams 
Multiply by 0.000022
1 centigram = 0.000022 pound 
80 centigrams multiplied by 0.000022 = 0.0017637 pounds 
Kilograms 
Multiply by 2.205
(1 kilogram = 2.205 lbs) 
5 kilograms multiplied by 2.205 = 11.025 pounds 
Grams 
Multiply by 0.0022046
1 gram = 0.0022046 pound 
700 grams multiplied by 0.0022046 = 1.5432358 pounds 
How to Get Pounds from Gallons 
Unit of Measure You Have 
Multiply the Quantity by the Conversion Factor 
Example 
Gallons 
If you do not know the density: multiply by 8.34, the density of water
(1 gal water =8.34 lbs) 
50 gallons of wastewater, multiplied by 8.34 = 417 pounds 
Gallons 
If density is measured in lbs per gallon (lbs/gal): multiply by the
density 
50 gallons of wastewater with a density of 7.9 lbs/gal is multiplied by
7.9. = 395 pounds 
Gallons 
If density is measured by specific gravity: multiply by 8.34 Then
multiply this product by the specific gravity 
50 gallons of wastewater multiplied by 8.34 = 417 pounds
417 pounds multiplied by a specific gravity of 1.2 = 500.4 pounds 
How to Get Pounds from Liters 
Unit of
Measure You Have 
Multiply the
Quantity by the Conversion Factor 
Example 
Liters 
If you do not
know the density, assume the waste has the density of water: multiply by
2.19.
(1 liter water =
2.19 pounds) 
500 liters of
wastewater, multiplied by 2.19 = 1,095 pounds 
Liters 
If density is
measured in lbs/liter: multiply by the density. 
500 liters of
wastewater, with a density of 2.1 lbs/liter, multiplied by 2.1 = 1,050
pounds 
Liters 
If density is
measured by specific gravity: multiply by 2.19. Then multiply this
product by the specific gravity. 
500 gallons of
wastewater multiplied by 2.19 = 1,095 pounds
1,095 pounds
multiplied by a specific gravity of 1.2 = 1,314 pounds 
