Mass per volume density.
Pounds per Cubic foot to Long tons per Imperial gallon Converter — lb/ft3 to long ton/imp gal
Convert Pound per Cubic foot (lb/ft3) to Long ton per Imperial gallon (long ton/imp gal) using the exact conversion factor (1 pound per cubic foot = 0.0000716713 long ton per imperial gallon). See the formula, worked examples, conversion table, and common uses.
Pounds per Cubic foot to Long tons per Imperial gallon 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 16.01846337 / 223499.0748.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pounds per Cubic foot to Long tons per Imperial gallon
Pound per Cubic foot and Long ton per Imperial gallon 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. Pound per Cubic foot is most often used for us construction material density specs (concrete, soil, lumber, insulation).
Formula
long tons per imperial gallon = pounds per cubic foot × 0.000071671273766
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per cubic foot equals 16.018463374 base units, and 1 long ton per imperial gallon equals 223499.074765 base units, so dividing one by the other gives the direct pound per cubic foot-to-long ton per imperial gallon factor of 0.000071671273766.
Simple example
1 lb/ft3 × 0.00007167127377 = 0.0000716713 long ton/imp gal
1 pound per cubic foot = 0.0000716713 long tons per imperial gallon.
Real-world example
1,000 lb/ft3 × 0.00007167127377 = 0.0716712738 long ton/imp gal
1,000 pounds per cubic foot = 0.0716712738 long tons per imperial gallon.
Conversion table
| Pound per Cubic foot (lb/ft3) | Long ton per Imperial gallon (long ton/imp gal) |
|---|---|
| 0.1 lb/ft3 | 0.0000071671 long ton/imp gal |
| 1 lb/ft3 | 0.0000716713 long ton/imp gal |
| 10 lb/ft3 | 0.0007167127 long ton/imp gal |
| 100 lb/ft3 | 0.0071671274 long ton/imp gal |
| 1,000 lb/ft3 | 0.0716712738 long ton/imp gal |
| 10,000 lb/ft3 | 0.7167127377 long ton/imp gal |
Reverse conversion: Long ton per Imperial gallon to Pound per Cubic foot
0.0000716713 long ton/imp gal × 13952.59143 = 1.000000366 lb/ft3
0.0000716713 long tons per imperial gallon = 1.000000366 pounds per cubic foot.
pounds per cubic foot = long tons per imperial gallon × 13952.5914283
For a page dedicated to this direction, see Long ton per Imperial gallon to Pound per Cubic foot.
Understanding the Pound per Cubic foot
Pound per Cubic foot (lb/ft3) measures density. The US customary unit for expressing density, commonly used in construction and engineering material specifications. It is classified as a US customary density unit.
Where it's used: United States (construction, engineering, materials specifications)
Uses of the Pound per Cubic foot today
- US construction material density specs (concrete, soil, lumber, insulation)
- US engineering material property tables
- Bulk material handling and shipping weight estimates
Understanding the Long ton per Imperial gallon (long ton/imp gal)
Mass per volume density.
Pound per Cubic foot — sources
- NIST Handbook 44 — General tables of units including US customary density measures.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many long tons per imperial gallon are in 1 pound per cubic foot?
1 pound per cubic foot equals 0.0000716713 long tons per imperial gallon, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cubic foot to long ton per imperial gallon?
Multiply the pound per cubic foot value by 0.00007167127377. The converter above does this instantly to whatever precision you set.
How do I convert long ton per imperial gallon back to pound per cubic foot?
Use the reverse factor: 1 long ton per imperial gallon equals 13,952.59143 pounds per cubic foot. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per cubic foot?
Pound per Cubic foot (lb/ft3) measures density. The US customary unit for expressing density, commonly used in construction and engineering material specifications. It is classified as a US customary density unit.
What is a long ton per imperial gallon?
Long ton per Imperial gallon (long ton/imp gal) is a unit of density.
Is the pound per cubic foot to long ton per imperial gallon conversion exact?
Yes. Both pound per cubic foot and long ton per imperial gallon are defined by fixed standards rather than physical artifacts, so the factor of 0.00007167127377 used above is exact to as many digits as you choose to display.
Where is the pound per cubic foot still used today?
United States (construction, engineering, materials specifications)
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.