Mass per volume density.
Pounds per Cubic foot to Carats per Pint Converter — lb/ft3 to ct/pt
Convert Pound per Cubic foot (lb/ft3) to Carat per Pint (ct/pt) using the exact conversion factor (1 pound per cubic foot = 37.89780001 carat per pint). See the formula, worked examples, conversion table, and common uses.
Pounds per Cubic foot to Carats per Pint 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 / 0.4226752838.
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 Carats per Pint
Pound per Cubic foot and Carat per Pint 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
carats per pint = pounds per cubic foot × 37.8978000109
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 carat per pint equals 0.422675283773 base units, so dividing one by the other gives the direct pound per cubic foot-to-carat per pint factor of 37.8978000109.
Simple example
1 lb/ft3 × 37.89780001 = 37.89780001 ct/pt
1 pound per cubic foot = 37.89780001 carats per pint.
Real-world example
1,000 lb/ft3 × 37.89780001 = 37,897.80001 ct/pt
1,000 pounds per cubic foot = 37,897.80001 carats per pint.
Conversion table
| Pound per Cubic foot (lb/ft3) | Carat per Pint (ct/pt) |
|---|---|
| 0.1 lb/ft3 | 3.789780001 ct/pt |
| 1 lb/ft3 | 37.89780001 ct/pt |
| 10 lb/ft3 | 378.9780001 ct/pt |
| 100 lb/ft3 | 3,789.780001 ct/pt |
| 1,000 lb/ft3 | 37,897.80001 ct/pt |
| 10,000 lb/ft3 | 378,978.0001 ct/pt |
Reverse conversion: Carat per Pint to Pound per Cubic foot
37.89780001 ct/pt × 0.02638675595 = 1 lb/ft3
37.89780001 carats per pint = 1 pounds per cubic foot.
pounds per cubic foot = carats per pint × 0.0263867559519
For a page dedicated to this direction, see Carat per Pint 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 Carat per Pint (ct/pt)
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 carats per pint are in 1 pound per cubic foot?
1 pound per cubic foot equals 37.89780001 carats per pint, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cubic foot to carat per pint?
Multiply the pound per cubic foot value by 37.89780001. The converter above does this instantly to whatever precision you set.
How do I convert carat per pint back to pound per cubic foot?
Use the reverse factor: 1 carat per pint equals 0.026386756 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 carat per pint?
Carat per Pint (ct/pt) is a unit of density.
Is the pound per cubic foot to carat per pint conversion exact?
Yes. Both pound per cubic foot and carat per pint are defined by fixed standards rather than physical artifacts, so the factor of 37.89780001 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.