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Ecology home > HWTR home
> DW Annual Report > Frequently Asked Questions
> 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.
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How to Get Pounds from Tons or Cubic
Yards |
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Unit of Measure You Have |
Multiply the Quantity by the
Conversion Factor |
Example |
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Short
Tons |
Multiply
by 2,000
(1 ton =
2000 lbs) |
3 short
tons, multiplied by 2,000 = 6,000 pounds |
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Metric
Tons |
Multiply
by 2,200
(1
metric ton = 2200 lbs) |
5 metric
tons, multiplied by 2,200 = 11,000 pounds |
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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 |
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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 |
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How to Get Pounds from Kilograms |
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Unit of Measure You Have |
Multiply the Quantity by the Conversion Factor |
Example |
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Micrograms |
Multiply by 0.0000000022
1 microgram = 0.0000000022 or (2.2e-9) pound |
300 micrograms multiplied by 0.0000000022 = 0.00000066 pounds.
Note: micrograms are used in laboratory measurements. |
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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. |
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Centigrams |
Multiply by 0.000022
1 centigram = 0.000022 pound |
80 centigrams multiplied by 0.000022 = 0.0017637 pounds |
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Kilograms |
Multiply by 2.205
(1 kilogram = 2.205 lbs) |
5 kilograms multiplied by 2.205 = 11.025 pounds |
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Grams |
Multiply by 0.0022046
1 gram = 0.0022046 pound |
700 grams multiplied by 0.0022046 = 1.5432358 pounds |
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How to Get Pounds from Gallons |
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Unit of Measure You Have |
Multiply the Quantity by the Conversion Factor |
Example |
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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 |
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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 |
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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 |
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How to Get Pounds from Liters |
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Unit of
Measure You Have |
Multiply the
Quantity by the Conversion Factor |
Example |
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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 |
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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 |
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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 |
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