Mass per volume density.
Micrograms per Cubic yard to Milligrams per Gallon Converter — ug/yd3 to mg/gal
Convert Microgram per Cubic yard (ug/yd3) to Milligram per Gallon (mg/gal) using the exact conversion factor (1 microgram per cubic yard = 0.0000049511 milligram per gallon). See the formula, worked examples, and conversion table.
Micrograms per Cubic yard to Milligrams per Gallon converter
Converter
Density Converter
Convert thousands of mass-per-volume density combinations for science, engineering, agriculture, and fluids.
Context values
Some unit families need one extra value for a physically accurate result.
Mass per volume density.
Result = input x 1.30795062e-9 / 0.0002641720524.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Micrograms per Cubic yard to Milligrams per Gallon
Microgram per Cubic yard and Milligram per Gallon both measure density — mass per unit volume — a property used to identify materials, check manufacturing quality, and predict whether something floats or sinks. As a fixed reference point, water has a density of exactly 1000 kg/m³ (1 g/cm³, 1 g/mL) at its temperature of maximum density, which is why many density figures in science and engineering are quoted relative to water. Both are mass per volume density units.
Formula
milligrams per gallon = micrograms per cubic yard × 0.00000495113168724
This factor comes from each unit's defined relationship to the category's base unit: 1 microgram per cubic yard equals 1.307951e-9 base units, and 1 milligram per gallon equals 0.000264172052358 base units, so dividing one by the other gives the direct microgram per cubic yard-to-milligram per gallon factor of 0.00000495113168724.
Simple example
1 ug/yd3 × 0.000004951131687 = 0.0000049511 mg/gal
1 microgram per cubic yard = 0.0000049511 milligrams per gallon.
Real-world example
1,000 ug/yd3 × 0.000004951131687 = 0.0049511317 mg/gal
1,000 micrograms per cubic yard = 0.0049511317 milligrams per gallon.
Conversion table
| Microgram per Cubic yard (ug/yd3) | Milligram per Gallon (mg/gal) |
|---|---|
| 0.1 ug/yd3 | 4.951132e-7 mg/gal |
| 1 ug/yd3 | 0.0000049511 mg/gal |
| 10 ug/yd3 | 0.0000495113 mg/gal |
| 100 ug/yd3 | 0.0004951132 mg/gal |
| 1,000 ug/yd3 | 0.0049511317 mg/gal |
| 10,000 ug/yd3 | 0.0495113169 mg/gal |
Reverse conversion: Milligram per Gallon to Microgram per Cubic yard
0.0000049511 mg/gal × 201974.026 = 0.9999936 ug/yd3
0.0000049511 milligrams per gallon = 0.9999936 micrograms per cubic yard.
micrograms per cubic yard = milligrams per gallon × 201974.025974
For a page dedicated to this direction, see Milligram per Gallon to Microgram per Cubic yard.
Understanding the Microgram per Cubic yard (ug/yd3)
Mass per volume density.
Understanding the Milligram per Gallon (mg/gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many milligrams per gallon are in 1 microgram per cubic yard?
1 microgram per cubic yard equals 0.0000049511 milligrams per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert microgram per cubic yard to milligram per gallon?
Multiply the microgram per cubic yard value by 0.000004951131687. The converter above does this instantly to whatever precision you set.
How do I convert milligram per gallon back to microgram per cubic yard?
Use the reverse factor: 1 milligram per gallon equals 201,974.026 micrograms per cubic yard. You can also use the swap control in the converter above to flip the direction instantly.
What is a microgram per cubic yard?
Microgram per Cubic yard (ug/yd3) is a unit of density.
What is a milligram per gallon?
Milligram per Gallon (mg/gal) is a unit of density.
Is the microgram per cubic yard to milligram per gallon conversion exact?
Yes. Both microgram per cubic yard and milligram per gallon are defined by fixed standards rather than physical artifacts, so the factor of 0.000004951131687 used above is exact to as many digits as you choose to display.
What's the difference between density and mass concentration?
Density is the mass of a pure substance or material per unit volume. Mass concentration is the mass of one component — like a dissolved solute — within a mixture's total volume. The two use the same kind of units but describe different physical situations.