Mass per volume density.
Long tons per Cubic Meter to Stones per Cubic Millimeter Converter — long ton/m3 to st/mm3
Convert Long ton per Cubic Meter (long ton/m3) to Stone per Cubic Millimeter (st/mm3) using the exact conversion factor (1 long ton per cubic meter = 1.6e-7 stone per cubic millimeter). See the formula, worked examples, and conversion table.
Long tons per Cubic Meter 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 1016.046909 / 6.35029318e+9.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Long tons per Cubic Meter to Stones per Cubic Millimeter
Long ton per Cubic Meter 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 = long tons per cubic meter × 1.6e-7
This factor comes from each unit's defined relationship to the category's base unit: 1 long ton per cubic meter equals 1016.0469088 base units, and 1 stone per cubic millimeter equals 6350293180 base units, so dividing one by the other gives the direct long ton per cubic meter-to-stone per cubic millimeter factor of 1.6e-7.
Simple example
1 long ton/m3 × 1.6e-7 = 1.6e-7 st/mm3
1 long ton per cubic meter = 1.6e-7 stones per cubic millimeter.
Real-world example
1,000 long ton/m3 × 1.6e-7 = 0.00016 st/mm3
1,000 long tons per cubic meter = 0.00016 stones per cubic millimeter.
Conversion table
| Long ton per Cubic Meter (long ton/m3) | Stone per Cubic Millimeter (st/mm3) |
|---|---|
| 0.1 long ton/m3 | 1.6e-8 st/mm3 |
| 1 long ton/m3 | 1.6e-7 st/mm3 |
| 10 long ton/m3 | 0.0000016 st/mm3 |
| 100 long ton/m3 | 0.000016 st/mm3 |
| 1,000 long ton/m3 | 0.00016 st/mm3 |
| 10,000 long ton/m3 | 0.0016 st/mm3 |
Reverse conversion: Stone per Cubic Millimeter to Long ton per Cubic Meter
1.6e-7 st/mm3 × 6250000 = 1 long ton/m3
1.6e-7 stones per cubic millimeter = 1 long ton per cubic meter.
long tons per cubic meter = stones per cubic millimeter × 6250000
For a page dedicated to this direction, see Stone per Cubic Millimeter to Long ton per Cubic Meter.
Understanding the Long ton per Cubic Meter (long ton/m3)
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 long ton per cubic meter?
1 long ton per cubic meter equals 1.6e-7 stones per cubic millimeter, using the exact defined conversion factor rather than an estimate.
How do I convert long ton per cubic meter to stone per cubic millimeter?
Multiply the long ton per cubic meter value by 1.6e-7. The converter above does this instantly to whatever precision you set.
How do I convert stone per cubic millimeter back to long ton per cubic meter?
Use the reverse factor: 1 stone per cubic millimeter equals 6,250,000 long tons per cubic meter. You can also use the swap control in the converter above to flip the direction instantly.
What is a long ton per cubic meter?
Long ton per Cubic Meter (long ton/m3) 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 long ton per cubic meter to stone per cubic millimeter conversion exact?
Yes. Both long ton per cubic meter and stone per cubic millimeter are defined by fixed standards rather than physical artifacts, so the factor of 1.6e-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.