Mass per volume density.
Pounds per Cubic Meter to Long tons per Cubic yard Converter — lb/m3 to long ton/yd3
Convert Pound per Cubic Meter (lb/m3) to Long ton per Cubic yard (long ton/yd3) using the exact conversion factor (1 pound per cubic meter = 0.0003413191 long ton per cubic yard). See the formula, worked examples, and conversion table.
Pounds per Cubic Meter 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 0.45359237 / 1328.939184.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pounds per Cubic Meter to Long tons per Cubic yard
Pound per Cubic Meter 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 = pounds per cubic meter × 0.000341319133029
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per cubic meter equals 0.45359237 base units, and 1 long ton per cubic yard equals 1328.93918362 base units, so dividing one by the other gives the direct pound per cubic meter-to-long ton per cubic yard factor of 0.000341319133029.
Simple example
1 lb/m3 × 0.000341319133 = 0.0003413191 long ton/yd3
1 pound per cubic meter = 0.0003413191 long tons per cubic yard.
Real-world example
1,000 lb/m3 × 0.000341319133 = 0.341319133 long ton/yd3
1,000 pounds per cubic meter = 0.341319133 long tons per cubic yard.
Conversion table
| Pound per Cubic Meter (lb/m3) | Long ton per Cubic yard (long ton/yd3) |
|---|---|
| 0.1 lb/m3 | 0.0000341319 long ton/yd3 |
| 1 lb/m3 | 0.0003413191 long ton/yd3 |
| 10 lb/m3 | 0.0034131913 long ton/yd3 |
| 100 lb/m3 | 0.0341319133 long ton/yd3 |
| 1,000 lb/m3 | 0.341319133 long ton/yd3 |
| 10,000 lb/m3 | 3.41319133 long ton/yd3 |
Reverse conversion: Long ton per Cubic yard to Pound per Cubic Meter
0.0003413191 long ton/yd3 × 2929.809387 = 0.9999999032 lb/m3
0.0003413191 long tons per cubic yard = 0.9999999032 pounds per cubic meter.
pounds per cubic meter = long tons per cubic yard × 2929.80938726
For a page dedicated to this direction, see Long ton per Cubic yard to Pound per Cubic Meter.
Understanding the Pound per Cubic Meter (lb/m3)
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 pound per cubic meter?
1 pound per cubic meter equals 0.0003413191 long tons per cubic yard, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cubic meter to long ton per cubic yard?
Multiply the pound per cubic meter value by 0.000341319133. The converter above does this instantly to whatever precision you set.
How do I convert long ton per cubic yard back to pound per cubic meter?
Use the reverse factor: 1 long ton per cubic yard equals 2,929.809387 pounds per cubic meter. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per cubic meter?
Pound per Cubic Meter (lb/m3) 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 pound per cubic meter to long ton per cubic yard conversion exact?
Yes. Both pound per cubic meter and long ton per cubic yard are defined by fixed standards rather than physical artifacts, so the factor of 0.000341319133 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.