Mass per volume density.
Micrograms per Gallon to Grains per Cubic Centimeter Converter — ug/gal to gr/cm3
Convert Microgram per Gallon (ug/gal) to Grain per Cubic Centimeter (gr/cm3) using the exact conversion factor (1 microgram per gallon = 4.076798e-9 grain per cubic centimeter). See the formula, worked examples, and conversion table.
Micrograms per Gallon to Grains per Cubic Centimeter 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 2.64172052e-7 / 64.79891.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Micrograms per Gallon to Grains per Cubic Centimeter
Microgram per Gallon and Grain per Cubic Centimeter 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
grains per cubic centimeter = micrograms per gallon × 4.076798e-9
This factor comes from each unit's defined relationship to the category's base unit: 1 microgram per gallon equals 2.641721e-7 base units, and 1 grain per cubic centimeter equals 64.79891 base units, so dividing one by the other gives the direct microgram per gallon-to-grain per cubic centimeter factor of 4.076798e-9.
Simple example
1 ug/gal × 4.076798e-9 = 4.076798e-9 gr/cm3
1 microgram per gallon = 4.076798e-9 grains per cubic centimeter.
Real-world example
1,000 ug/gal × 4.076798e-9 = 0.0000040768 gr/cm3
1,000 micrograms per gallon = 0.0000040768 grains per cubic centimeter.
Conversion table
| Microgram per Gallon (ug/gal) | Grain per Cubic Centimeter (gr/cm3) |
|---|---|
| 0.1 ug/gal | 4.076798e-10 gr/cm3 |
| 1 ug/gal | 4.076798e-9 gr/cm3 |
| 10 ug/gal | 4.076798e-8 gr/cm3 |
| 100 ug/gal | 4.076798e-7 gr/cm3 |
| 1,000 ug/gal | 0.0000040768 gr/cm3 |
| 10,000 ug/gal | 0.000040768 gr/cm3 |
Reverse conversion: Grain per Cubic Centimeter to Microgram per Gallon
4.076798e-9 gr/cm3 × 245290557.5 = 1.000000054 ug/gal
4.076798e-9 grains per cubic centimeter = 1.000000054 micrograms per gallon.
micrograms per gallon = grains per cubic centimeter × 245290557.504
For a page dedicated to this direction, see Grain per Cubic Centimeter to Microgram per Gallon.
Understanding the Microgram per Gallon (ug/gal)
Mass per volume density.
Understanding the Grain per Cubic Centimeter (gr/cm3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains per cubic centimeter are in 1 microgram per gallon?
1 microgram per gallon equals 4.076798e-9 grains per cubic centimeter, using the exact defined conversion factor rather than an estimate.
How do I convert microgram per gallon to grain per cubic centimeter?
Multiply the microgram per gallon value by 4.076798e-9. The converter above does this instantly to whatever precision you set.
How do I convert grain per cubic centimeter back to microgram per gallon?
Use the reverse factor: 1 grain per cubic centimeter equals 245,290,557.5 micrograms per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a microgram per gallon?
Microgram per Gallon (ug/gal) is a unit of density.
What is a grain per cubic centimeter?
Grain per Cubic Centimeter (gr/cm3) is a unit of density.
Is the microgram per gallon to grain per cubic centimeter conversion exact?
Yes. Both microgram per gallon and grain per cubic centimeter are defined by fixed standards rather than physical artifacts, so the factor of 4.076798e-9 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.