Mass per volume density.
Milligrams per Teaspoon to Pounds per Gallon Converter — mg/tsp to lb/gal
Convert Milligram per Teaspoon (mg/tsp) to Pound per Gallon (lb/gal) using the exact conversion factor (1 milligram per teaspoon = 0.0016931502 pound per gallon). See the formula, worked examples, conversion table, and common uses.
Milligrams per Teaspoon to Pounds 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 0.2028841362 / 119.8264273.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Milligrams per Teaspoon to Pounds per Gallon
Milligram per Teaspoon and Pound 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
pounds per gallon = milligrams per teaspoon × 0.00169315017358
This factor comes from each unit's defined relationship to the category's base unit: 1 milligram per teaspoon equals 0.202884136211 base units, and 1 pound per gallon equals 119.826427317 base units, so dividing one by the other gives the direct milligram per teaspoon-to-pound per gallon factor of 0.00169315017358.
Simple example
1 mg/tsp × 0.001693150174 = 0.0016931502 lb/gal
1 milligram per teaspoon = 0.0016931502 pounds per gallon.
Real-world example
1,000 mg/tsp × 0.001693150174 = 1.693150174 lb/gal
1,000 milligrams per teaspoon = 1.693150174 pounds per gallon.
Conversion table
| Milligram per Teaspoon (mg/tsp) | Pound per Gallon (lb/gal) |
|---|---|
| 0.1 mg/tsp | 0.000169315 lb/gal |
| 1 mg/tsp | 0.0016931502 lb/gal |
| 10 mg/tsp | 0.0169315017 lb/gal |
| 100 mg/tsp | 0.1693150174 lb/gal |
| 1,000 mg/tsp | 1.693150174 lb/gal |
| 10,000 mg/tsp | 16.93150174 lb/gal |
Reverse conversion: Pound per Gallon to Milligram per Teaspoon
0.0016931502 lb/gal × 590.6150651 = 1.000000016 mg/tsp
0.0016931502 pounds per gallon = 1.000000016 milligrams per teaspoon.
milligrams per teaspoon = pounds per gallon × 590.615065104
For a page dedicated to this direction, see Pound per Gallon to Milligram per Teaspoon.
Understanding the Milligram per Teaspoon (mg/tsp)
Mass per volume density.
Understanding the Pound per Gallon
Pound per Gallon (lb/gal) measures density. The US customary unit for liquid density, based on the US gallon (231 cubic inches). It is classified as a US customary density unit.
Where it's used: United States (paint, fuel, and industrial liquid density specifications)
lb/gal vs. lb/ft³. Both are US customary density units; they're related through the real, fixed relationship between the US gallon and the cubic foot (1 cubic foot ≈ 7.48 US gallons), not a round conversion factor.
Uses of the Pound per Gallon today
- US paint and coatings density specifications
- US fuel and petroleum liquid density specs
- Industrial liquid handling and shipping weight calculations
Pound per Gallon — sources
- NIST Handbook 44 — General tables of units including US customary density measures.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per gallon are in 1 milligram per teaspoon?
1 milligram per teaspoon equals 0.0016931502 pounds per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert milligram per teaspoon to pound per gallon?
Multiply the milligram per teaspoon value by 0.001693150174. The converter above does this instantly to whatever precision you set.
How do I convert pound per gallon back to milligram per teaspoon?
Use the reverse factor: 1 pound per gallon equals 590.6150651 milligrams per teaspoon. You can also use the swap control in the converter above to flip the direction instantly.
What is a milligram per teaspoon?
Milligram per Teaspoon (mg/tsp) is a unit of density.
What is a pound per gallon?
Pound per Gallon (lb/gal) measures density. The US customary unit for liquid density, based on the US gallon (231 cubic inches). It is classified as a US customary density unit.
Is the milligram per teaspoon to pound per gallon conversion exact?
Yes. Both milligram per teaspoon and pound per gallon are defined by fixed standards rather than physical artifacts, so the factor of 0.001693150174 used above is exact to as many digits as you choose to display.
What is the difference between lb/gal vs. lb/ft³?
Both are US customary density units; they're related through the real, fixed relationship between the US gallon and the cubic foot (1 cubic foot ≈ 7.48 US gallons), not a round conversion factor.