Mass per volume density.
Ounce per Cubic inches to Stones per Cubic Millimeter Converter — oz/in3 to st/mm3
Convert Ounce per Cubic inch (oz/in3) to Stone per Cubic Millimeter (st/mm3) using the exact conversion factor (1 ounce per cubic inch = 2.724274e-7 stone per cubic millimeter). See the formula, worked examples, and conversion table.
Ounce per Cubic inches to Stones per Cubic Millimeter 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 1729.994044 / 6.35029318e+9.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Ounce per Cubic inches to Stones per Cubic Millimeter
Ounce per Cubic inch and Stone per Cubic Millimeter 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 cubic millimeter = ounce per cubic inches × 2.724274e-7
This factor comes from each unit's defined relationship to the category's base unit: 1 ounce per cubic inch equals 1729.99404439 base units, and 1 stone per cubic millimeter equals 6350293180 base units, so dividing one by the other gives the direct ounce per cubic inch-to-stone per cubic millimeter factor of 2.724274e-7.
Simple example
1 oz/in3 × 2.724274e-7 = 2.724274e-7 st/mm3
1 ounce per cubic inch = 2.724274e-7 stones per cubic millimeter.
Real-world example
1,000 oz/in3 × 2.724274e-7 = 0.0002724274 st/mm3
1,000 ounce per cubic inches = 0.0002724274 stones per cubic millimeter.
Conversion table
| Ounce per Cubic inch (oz/in3) | Stone per Cubic Millimeter (st/mm3) |
|---|---|
| 0.1 oz/in3 | 2.724274e-8 st/mm3 |
| 1 oz/in3 | 2.724274e-7 st/mm3 |
| 10 oz/in3 | 0.0000027243 st/mm3 |
| 100 oz/in3 | 0.0000272427 st/mm3 |
| 1,000 oz/in3 | 0.0002724274 st/mm3 |
| 10,000 oz/in3 | 0.0027242743 st/mm3 |
Reverse conversion: Stone per Cubic Millimeter to Ounce per Cubic inch
2.724274e-7 st/mm3 × 3670702.336 = 0.9999998936 oz/in3
2.724274e-7 stones per cubic millimeter = 0.9999998936 ounce per cubic inches.
ounce per cubic inches = stones per cubic millimeter × 3670702.336
For a page dedicated to this direction, see Stone per Cubic Millimeter to Ounce per Cubic inch.
Understanding the Ounce per Cubic inch (oz/in3)
Mass per volume density.
Understanding the Stone per Cubic Millimeter (st/mm3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per cubic millimeter are in 1 ounce per cubic inch?
1 ounce per cubic inch equals 2.724274e-7 stones per cubic millimeter, using the exact defined conversion factor rather than an estimate.
How do I convert ounce per cubic inch to stone per cubic millimeter?
Multiply the ounce per cubic inch value by 2.724274e-7. The converter above does this instantly to whatever precision you set.
How do I convert stone per cubic millimeter back to ounce per cubic inch?
Use the reverse factor: 1 stone per cubic millimeter equals 3,670,702.336 ounce per cubic inches. You can also use the swap control in the converter above to flip the direction instantly.
What is a ounce per cubic inch?
Ounce per Cubic inch (oz/in3) is a unit of density.
What is a stone per cubic millimeter?
Stone per Cubic Millimeter (st/mm3) is a unit of density.
Is the ounce per cubic inch to stone per cubic millimeter conversion exact?
Yes. Both ounce per cubic inch and stone per cubic millimeter are defined by fixed standards rather than physical artifacts, so the factor of 2.724274e-7 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.