Mass per volume density.
Short tons per Cubic Millimeter to Long tons per Cubic yard Converter — ton/mm3 to long ton/yd3
Convert Short ton per Cubic Millimeter (ton/mm3) to Long ton per Cubic yard (long ton/yd3) using the exact conversion factor (1 short ton per cubic millimeter = 682,638,266.1 long ton per cubic yard). See the formula, worked examples, and conversion table.
Short tons per Cubic Millimeter to Long tons per Cubic yard 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 9.0718474e+11 / 1328.939184.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Short tons per Cubic Millimeter to Long tons per Cubic yard
Short ton per Cubic Millimeter and Long ton per Cubic yard 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
long tons per cubic yard = short tons per cubic millimeter × 682638266.057
This factor comes from each unit's defined relationship to the category's base unit: 1 short ton per cubic millimeter equals 907184740000 base units, and 1 long ton per cubic yard equals 1328.93918362 base units, so dividing one by the other gives the direct short ton per cubic millimeter-to-long ton per cubic yard factor of 682638266.057.
Simple example
1 ton/mm3 × 682638266.1 = 682,638,266.1 long ton/yd3
1 short ton per cubic millimeter = 682,638,266.1 long tons per cubic yard.
Real-world example
1,000 ton/mm3 × 682638266.1 = 682,638,266,100 long ton/yd3
1,000 short tons per cubic millimeter = 682,638,266,100 long tons per cubic yard.
Conversion table
| Short ton per Cubic Millimeter (ton/mm3) | Long ton per Cubic yard (long ton/yd3) |
|---|---|
| 0.1 ton/mm3 | 68,263,826.61 long ton/yd3 |
| 1 ton/mm3 | 682,638,266.1 long ton/yd3 |
| 10 ton/mm3 | 6,826,382,661 long ton/yd3 |
| 100 ton/mm3 | 68,263,826,610 long ton/yd3 |
| 1,000 ton/mm3 | 682,638,266,100 long ton/yd3 |
| 10,000 ton/mm3 | 6.826383e+12 long ton/yd3 |
Reverse conversion: Long ton per Cubic yard to Short ton per Cubic Millimeter
1 long ton/yd3 × 1.464905e-9 = 1.464905e-9 ton/mm3
1 long ton per cubic yard = 1.464905e-9 short tons per cubic millimeter.
short tons per cubic millimeter = long tons per cubic yard × 1.464905e-9
For a page dedicated to this direction, see Long ton per Cubic yard to Short ton per Cubic Millimeter.
Understanding the Short ton per Cubic Millimeter (ton/mm3)
Mass per volume density.
Understanding the Long ton per Cubic yard (long ton/yd3)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many long tons per cubic yard are in 1 short ton per cubic millimeter?
1 short ton per cubic millimeter equals 682,638,266.1 long tons per cubic yard, using the exact defined conversion factor rather than an estimate.
How do I convert short ton per cubic millimeter to long ton per cubic yard?
Multiply the short ton per cubic millimeter value by 682638266.1. The converter above does this instantly to whatever precision you set.
How do I convert long ton per cubic yard back to short ton per cubic millimeter?
Use the reverse factor: 1 long ton per cubic yard equals 1.464905e-9 short tons per cubic millimeter. You can also use the swap control in the converter above to flip the direction instantly.
What is a short ton per cubic millimeter?
Short ton per Cubic Millimeter (ton/mm3) is a unit of density.
What is a long ton per cubic yard?
Long ton per Cubic yard (long ton/yd3) is a unit of density.
Is the short ton per cubic millimeter to long ton per cubic yard conversion exact?
Yes. Both short ton per cubic millimeter and long ton per cubic yard are defined by fixed standards rather than physical artifacts, so the factor of 682638266.1 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.