Mass per volume density.
Micrograms per Teaspoon to Grains per Gallon Converter — ug/tsp to gr/gal
Convert Microgram per Teaspoon (ug/tsp) to Grain per Gallon (gr/gal) using the exact conversion factor (1 microgram per teaspoon = 0.0118520512 grain per gallon). See the formula, worked examples, and conversion table.
Micrograms 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 0.0002028841362 / 0.01711806105.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Micrograms per Teaspoon to Grains per Gallon
Microgram 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 = micrograms per teaspoon × 0.0118520512151
This factor comes from each unit's defined relationship to the category's base unit: 1 microgram per teaspoon equals 0.000202884136211 base units, and 1 grain per gallon equals 0.0171180610453 base units, so dividing one by the other gives the direct microgram per teaspoon-to-grain per gallon factor of 0.0118520512151.
Simple example
1 ug/tsp × 0.01185205122 = 0.0118520512 gr/gal
1 microgram per teaspoon = 0.0118520512 grains per gallon.
Real-world example
1,000 ug/tsp × 0.01185205122 = 11.85205122 gr/gal
1,000 micrograms per teaspoon = 11.85205122 grains per gallon.
Conversion table
| Microgram per Teaspoon (ug/tsp) | Grain per Gallon (gr/gal) |
|---|---|
| 0.1 ug/tsp | 0.0011852051 gr/gal |
| 1 ug/tsp | 0.0118520512 gr/gal |
| 10 ug/tsp | 0.1185205122 gr/gal |
| 100 ug/tsp | 1.185205122 gr/gal |
| 1,000 ug/tsp | 11.85205122 gr/gal |
| 10,000 ug/tsp | 118.5205122 gr/gal |
Reverse conversion: Grain per Gallon to Microgram per Teaspoon
0.0118520512 gr/gal × 84.37358073 = 0.9999999987 ug/tsp
0.0118520512 grains per gallon = 0.9999999987 micrograms per teaspoon.
micrograms per teaspoon = grains per gallon × 84.3735807292
For a page dedicated to this direction, see Grain per Gallon to Microgram per Teaspoon.
Understanding the Microgram per Teaspoon (ug/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 microgram per teaspoon?
1 microgram per teaspoon equals 0.0118520512 grains per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert microgram per teaspoon to grain per gallon?
Multiply the microgram per teaspoon value by 0.01185205122. The converter above does this instantly to whatever precision you set.
How do I convert grain per gallon back to microgram per teaspoon?
Use the reverse factor: 1 grain per gallon equals 84.37358073 micrograms per teaspoon. You can also use the swap control in the converter above to flip the direction instantly.
What is a microgram per teaspoon?
Microgram per Teaspoon (ug/tsp) is a unit of density.
What is a grain per gallon?
Grain per Gallon (gr/gal) is a unit of density.
Is the microgram per teaspoon to grain per gallon conversion exact?
Yes. Both microgram per teaspoon and grain per gallon are defined by fixed standards rather than physical artifacts, so the factor of 0.01185205122 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.