Mass per volume density.
Nanograms per Gallon to Grains per Oil barrel Converter — ng/gal to gr/bbl
Convert Nanogram per Gallon (ng/gal) to Grain per Oil barrel (gr/bbl) using the exact conversion factor (1 nanogram per gallon = 6.481591e-7 grain per oil barrel). See the formula, worked examples, and conversion table.
Nanograms per Gallon to Grains per Oil barrel 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 / 0.000407572882.
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 Oil barrel
Nanogram per Gallon and Grain per Oil barrel 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 oil barrel = nanograms per gallon × 6.481591e-7
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 oil barrel equals 0.00040757288203 base units, so dividing one by the other gives the direct nanogram per gallon-to-grain per oil barrel factor of 6.481591e-7.
Simple example
1 ng/gal × 6.481591e-7 = 6.481591e-7 gr/bbl
1 nanogram per gallon = 6.481591e-7 grains per oil barrel.
Real-world example
1,000 ng/gal × 6.481591e-7 = 0.0006481591 gr/bbl
1,000 nanograms per gallon = 0.0006481591 grains per oil barrel.
Conversion table
| Nanogram per Gallon (ng/gal) | Grain per Oil barrel (gr/bbl) |
|---|---|
| 0.1 ng/gal | 6.481591e-8 gr/bbl |
| 1 ng/gal | 6.481591e-7 gr/bbl |
| 10 ng/gal | 0.0000064816 gr/bbl |
| 100 ng/gal | 0.0000648159 gr/bbl |
| 1,000 ng/gal | 0.0006481591 gr/bbl |
| 10,000 ng/gal | 0.0064815905 gr/bbl |
Reverse conversion: Grain per Oil barrel to Nanogram per Gallon
6.481591e-7 gr/bbl × 1542831.19 = 1.000000076 ng/gal
6.481591e-7 grains per oil barrel = 1.000000076 nanograms per gallon.
nanograms per gallon = grains per oil barrel × 1542831.19048
For a page dedicated to this direction, see Grain per Oil barrel to Nanogram per Gallon.
Understanding the Nanogram per Gallon (ng/gal)
Mass per volume density.
Understanding the Grain per Oil barrel (gr/bbl)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains per oil barrel are in 1 nanogram per gallon?
1 nanogram per gallon equals 6.481591e-7 grains per oil barrel, using the exact defined conversion factor rather than an estimate.
How do I convert nanogram per gallon to grain per oil barrel?
Multiply the nanogram per gallon value by 6.481591e-7. The converter above does this instantly to whatever precision you set.
How do I convert grain per oil barrel back to nanogram per gallon?
Use the reverse factor: 1 grain per oil barrel equals 1,542,831.19 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 oil barrel?
Grain per Oil barrel (gr/bbl) is a unit of density.
Is the nanogram per gallon to grain per oil barrel conversion exact?
Yes. Both nanogram per gallon and grain per oil barrel are defined by fixed standards rather than physical artifacts, so the factor of 6.481591e-7 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.