Mass per volume density.
Pounds per Milliliter to Stones per Gallon Converter — lb/mL to st/gal
Convert Pound per Milliliter (lb/mL) to Stone per Gallon (st/gal) using the exact conversion factor (1 pound per milliliter = 270.386556 stone per gallon). See the formula, worked examples, and conversion table.
Pounds per Milliliter to Stones 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 453592.37 / 1677.569982.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pounds per Milliliter to Stones per Gallon
Pound per Milliliter and Stone 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
stones per gallon = pounds per milliliter × 270.386556
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per milliliter equals 453592.37 base units, and 1 stone per gallon equals 1677.56998244 base units, so dividing one by the other gives the direct pound per milliliter-to-stone per gallon factor of 270.386556.
Simple example
1 lb/mL × 270.386556 = 270.386556 st/gal
1 pound per milliliter = 270.386556 stones per gallon.
Real-world example
1,000 lb/mL × 270.386556 = 270,386.556 st/gal
1,000 pounds per milliliter = 270,386.556 stones per gallon.
Conversion table
| Pound per Milliliter (lb/mL) | Stone per Gallon (st/gal) |
|---|---|
| 0.1 lb/mL | 27.0386556 st/gal |
| 1 lb/mL | 270.386556 st/gal |
| 10 lb/mL | 2,703.86556 st/gal |
| 100 lb/mL | 27,038.6556 st/gal |
| 1,000 lb/mL | 270,386.556 st/gal |
| 10,000 lb/mL | 2,703,865.56 st/gal |
Reverse conversion: Stone per Gallon to Pound per Milliliter
270.386556 st/gal × 0.003698408733 = 1 lb/mL
270.386556 stones per gallon = 1 pounds per milliliter.
pounds per milliliter = stones per gallon × 0.00369840873301
For a page dedicated to this direction, see Stone per Gallon to Pound per Milliliter.
Understanding the Pound per Milliliter (lb/mL)
Mass per volume density.
Understanding the Stone per Gallon (st/gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per gallon are in 1 pound per milliliter?
1 pound per milliliter equals 270.386556 stones per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert pound per milliliter to stone per gallon?
Multiply the pound per milliliter value by 270.386556. The converter above does this instantly to whatever precision you set.
How do I convert stone per gallon back to pound per milliliter?
Use the reverse factor: 1 stone per gallon equals 0.0036984087 pounds per milliliter. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per milliliter?
Pound per Milliliter (lb/mL) is a unit of density.
What is a stone per gallon?
Stone per Gallon (st/gal) is a unit of density.
Is the pound per milliliter to stone per gallon conversion exact?
Yes. Both pound per milliliter and stone per gallon are defined by fixed standards rather than physical artifacts, so the factor of 270.386556 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.