Mass per volume density.
Pounds per Cubic Meter to Long tons per Cubic foot Converter — lb/m3 to long ton/ft3
Convert Pound per Cubic Meter (lb/m3) to Long ton per Cubic foot (long ton/ft3) using the exact conversion factor (1 pound per cubic meter = 0.0000126414 long ton per cubic foot). See the formula, worked examples, and conversion table.
Pounds per Cubic Meter to Long tons per Cubic foot 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 / 35881.35796.
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 foot
Pound per Cubic Meter and Long ton per Cubic foot 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 foot = pounds per cubic meter × 0.0000126414493714
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 foot equals 35881.3579577 base units, so dividing one by the other gives the direct pound per cubic meter-to-long ton per cubic foot factor of 0.0000126414493714.
Simple example
1 lb/m3 × 0.00001264144937 = 0.0000126414 long ton/ft3
1 pound per cubic meter = 0.0000126414 long tons per cubic foot.
Real-world example
1,000 lb/m3 × 0.00001264144937 = 0.0126414494 long ton/ft3
1,000 pounds per cubic meter = 0.0126414494 long tons per cubic foot.
Conversion table
| Pound per Cubic Meter (lb/m3) | Long ton per Cubic foot (long ton/ft3) |
|---|---|
| 0.1 lb/m3 | 0.0000012641 long ton/ft3 |
| 1 lb/m3 | 0.0000126414 long ton/ft3 |
| 10 lb/m3 | 0.0001264145 long ton/ft3 |
| 100 lb/m3 | 0.0012641449 long ton/ft3 |
| 1,000 lb/m3 | 0.0126414494 long ton/ft3 |
| 10,000 lb/m3 | 0.1264144937 long ton/ft3 |
Reverse conversion: Long ton per Cubic foot to Pound per Cubic Meter
0.0000126414 long ton/ft3 × 79104.85346 = 0.9999960945 lb/m3
0.0000126414 long tons per cubic foot = 0.9999960945 pounds per cubic meter.
pounds per cubic meter = long tons per cubic foot × 79104.8534561
For a page dedicated to this direction, see Long ton per Cubic foot to Pound per Cubic Meter.
Understanding the Pound per Cubic Meter (lb/m3)
Mass per volume density.
Understanding the Long ton per Cubic foot (long ton/ft3)
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 foot are in 1 pound per cubic meter?
1 pound per cubic meter equals 0.0000126414 long tons per cubic foot, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cubic meter to long ton per cubic foot?
Multiply the pound per cubic meter value by 0.00001264144937. The converter above does this instantly to whatever precision you set.
How do I convert long ton per cubic foot back to pound per cubic meter?
Use the reverse factor: 1 long ton per cubic foot equals 79,104.85346 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 foot?
Long ton per Cubic foot (long ton/ft3) is a unit of density.
Is the pound per cubic meter to long ton per cubic foot conversion exact?
Yes. Both pound per cubic meter and long ton per cubic foot are defined by fixed standards rather than physical artifacts, so the factor of 0.00001264144937 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.