Mass per volume density.
Nanograms per Gallon to Grains per Cubic yard Converter — ng/gal to gr/yd3
Convert Nanogram per Gallon (ng/gal) to Grain per Cubic yard (gr/yd3) using the exact conversion factor (1 nanogram per gallon = 0.0000031169 grain per cubic yard). See the formula, worked examples, and conversion table.
Nanograms per Gallon to Grains per Cubic yard 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-10 / 8.47537745e-5.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Nanograms per Gallon to Grains per Cubic yard
Nanogram per Gallon and Grain per Cubic yard 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 yard = nanograms per gallon × 0.00000311693554682
This factor comes from each unit's defined relationship to the category's base unit: 1 nanogram per gallon equals 2.641721e-10 base units, and 1 grain per cubic yard equals 0.0000847537744654 base units, so dividing one by the other gives the direct nanogram per gallon-to-grain per cubic yard factor of 0.00000311693554682.
Simple example
1 ng/gal × 0.000003116935547 = 0.0000031169 gr/yd3
1 nanogram per gallon = 0.0000031169 grains per cubic yard.
Real-world example
1,000 ng/gal × 0.000003116935547 = 0.0031169355 gr/yd3
1,000 nanograms per gallon = 0.0031169355 grains per cubic yard.
Conversion table
| Nanogram per Gallon (ng/gal) | Grain per Cubic yard (gr/yd3) |
|---|---|
| 0.1 ng/gal | 3.116936e-7 gr/yd3 |
| 1 ng/gal | 0.0000031169 gr/yd3 |
| 10 ng/gal | 0.0000311694 gr/yd3 |
| 100 ng/gal | 0.0003116936 gr/yd3 |
| 1,000 ng/gal | 0.0031169355 gr/yd3 |
| 10,000 ng/gal | 0.0311693555 gr/yd3 |
Reverse conversion: Grain per Cubic yard to Nanogram per Gallon
0.0000031169 gr/yd3 × 320827.9366 = 0.9999885956 ng/gal
0.0000031169 grains per cubic yard = 0.9999885956 nanograms per gallon.
nanograms per gallon = grains per cubic yard × 320827.9366
For a page dedicated to this direction, see Grain per Cubic yard to Nanogram per Gallon.
Understanding the Nanogram per Gallon (ng/gal)
Mass per volume density.
Understanding the Grain per Cubic yard (gr/yd3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains per cubic yard are in 1 nanogram per gallon?
1 nanogram per gallon equals 0.0000031169 grains per cubic yard, using the exact defined conversion factor rather than an estimate.
How do I convert nanogram per gallon to grain per cubic yard?
Multiply the nanogram per gallon value by 0.000003116935547. The converter above does this instantly to whatever precision you set.
How do I convert grain per cubic yard back to nanogram per gallon?
Use the reverse factor: 1 grain per cubic yard equals 320,827.9366 nanograms per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a nanogram per gallon?
Nanogram per Gallon (ng/gal) is a unit of density.
What is a grain per cubic yard?
Grain per Cubic yard (gr/yd3) is a unit of density.
Is the nanogram per gallon to grain per cubic yard conversion exact?
Yes. Both nanogram per gallon and grain per cubic yard are defined by fixed standards rather than physical artifacts, so the factor of 0.000003116935547 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.