Mass per volume density.
Stones per Fluid ounce to Kilograms per Milliliter Converter — st/fl oz to kg/mL
Convert Stone per Fluid ounce (st/fl oz) to Kilogram per Milliliter (kg/mL) using the exact conversion factor (1 stone per fluid ounce = 0.2147289578 kilogram per milliliter). See the formula, worked examples, and conversion table.
Stones per Fluid ounce to Kilograms per Milliliter 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 214728.9578 / 1e+6.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stones per Fluid ounce to Kilograms per Milliliter
Stone per Fluid ounce and Kilogram per Milliliter 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
kilograms per milliliter = stones per fluid ounce × 0.214728957752
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per fluid ounce equals 214728.957752 base units, and 1 kilogram per milliliter equals 1000000 base units, so dividing one by the other gives the direct stone per fluid ounce-to-kilogram per milliliter factor of 0.214728957752.
Simple example
1 st/fl oz × 0.2147289578 = 0.2147289578 kg/mL
1 stone per fluid ounce = 0.2147289578 kilograms per milliliter.
Real-world example
1,000 st/fl oz × 0.2147289578 = 214.7289578 kg/mL
1,000 stones per fluid ounce = 214.7289578 kilograms per milliliter.
Conversion table
| Stone per Fluid ounce (st/fl oz) | Kilogram per Milliliter (kg/mL) |
|---|---|
| 0.1 st/fl oz | 0.0214728958 kg/mL |
| 1 st/fl oz | 0.2147289578 kg/mL |
| 10 st/fl oz | 2.147289578 kg/mL |
| 100 st/fl oz | 21.47289578 kg/mL |
| 1,000 st/fl oz | 214.7289578 kg/mL |
| 10,000 st/fl oz | 2,147.289578 kg/mL |
Reverse conversion: Kilogram per Milliliter to Stone per Fluid ounce
0.2147289578 kg/mL × 4.657033734 = 1 st/fl oz
0.2147289578 kilograms per milliliter = 1 stones per fluid ounce.
stones per fluid ounce = kilograms per milliliter × 4.65703373439
For a page dedicated to this direction, see Kilogram per Milliliter to Stone per Fluid ounce.
Understanding the Stone per Fluid ounce (st/fl oz)
Mass per volume density.
Understanding the Kilogram per Milliliter (kg/mL)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kilograms per milliliter are in 1 stone per fluid ounce?
1 stone per fluid ounce equals 0.2147289578 kilograms per milliliter, using the exact defined conversion factor rather than an estimate.
How do I convert stone per fluid ounce to kilogram per milliliter?
Multiply the stone per fluid ounce value by 0.2147289578. The converter above does this instantly to whatever precision you set.
How do I convert kilogram per milliliter back to stone per fluid ounce?
Use the reverse factor: 1 kilogram per milliliter equals 4.657033734 stones per fluid ounce. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per fluid ounce?
Stone per Fluid ounce (st/fl oz) is a unit of density.
What is a kilogram per milliliter?
Kilogram per Milliliter (kg/mL) is a unit of density.
Is the stone per fluid ounce to kilogram per milliliter conversion exact?
Yes. Both stone per fluid ounce and kilogram per milliliter are defined by fixed standards rather than physical artifacts, so the factor of 0.2147289578 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.