Mass per volume density.
Nanograms per Teaspoon to Grains per Gallon Converter — ng/tsp to gr/gal
Convert Nanogram per Teaspoon (ng/tsp) to Grain per Gallon (gr/gal) using the exact conversion factor (1 nanogram per teaspoon = 0.0000118521 grain per gallon). See the formula, worked examples, and conversion table.
Nanograms per Teaspoon to Grains 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 2.02884136e-7 / 0.01711806105.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Nanograms per Teaspoon to Grains per Gallon
Nanogram per Teaspoon and Grain 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
grains per gallon = nanograms per teaspoon × 0.0000118520512151
This factor comes from each unit's defined relationship to the category's base unit: 1 nanogram per teaspoon equals 2.028841e-7 base units, and 1 grain per gallon equals 0.0171180610453 base units, so dividing one by the other gives the direct nanogram per teaspoon-to-grain per gallon factor of 0.0000118520512151.
Simple example
1 ng/tsp × 0.00001185205122 = 0.0000118521 gr/gal
1 nanogram per teaspoon = 0.0000118521 grains per gallon.
Real-world example
1,000 ng/tsp × 0.00001185205122 = 0.0118520512 gr/gal
1,000 nanograms per teaspoon = 0.0118520512 grains per gallon.
Conversion table
| Nanogram per Teaspoon (ng/tsp) | Grain per Gallon (gr/gal) |
|---|---|
| 0.1 ng/tsp | 0.0000011852 gr/gal |
| 1 ng/tsp | 0.0000118521 gr/gal |
| 10 ng/tsp | 0.0001185205 gr/gal |
| 100 ng/tsp | 0.0011852051 gr/gal |
| 1,000 ng/tsp | 0.0118520512 gr/gal |
| 10,000 ng/tsp | 0.1185205122 gr/gal |
Reverse conversion: Grain per Gallon to Nanogram per Teaspoon
0.0000118521 gr/gal × 84373.58073 = 1.000004116 ng/tsp
0.0000118521 grains per gallon = 1.000004116 nanograms per teaspoon.
nanograms per teaspoon = grains per gallon × 84373.5807292
For a page dedicated to this direction, see Grain per Gallon to Nanogram per Teaspoon.
Understanding the Nanogram per Teaspoon (ng/tsp)
Mass per volume density.
Understanding the Grain per Gallon (gr/gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains per gallon are in 1 nanogram per teaspoon?
1 nanogram per teaspoon equals 0.0000118521 grains per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert nanogram per teaspoon to grain per gallon?
Multiply the nanogram per teaspoon value by 0.00001185205122. The converter above does this instantly to whatever precision you set.
How do I convert grain per gallon back to nanogram per teaspoon?
Use the reverse factor: 1 grain per gallon equals 84,373.58073 nanograms per teaspoon. You can also use the swap control in the converter above to flip the direction instantly.
What is a nanogram per teaspoon?
Nanogram per Teaspoon (ng/tsp) is a unit of density.
What is a grain per gallon?
Grain per Gallon (gr/gal) is a unit of density.
Is the nanogram per teaspoon to grain per gallon conversion exact?
Yes. Both nanogram per teaspoon and grain per gallon are defined by fixed standards rather than physical artifacts, so the factor of 0.00001185205122 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.