Mass per volume density.
Carats per Quart to Pounds per Cubic foot Converter — ct/qt to lb/ft3
Convert Carat per Quart (ct/qt) to Pound per Cubic foot (lb/ft3) using the exact conversion factor (1 carat per quart = 0.013193378 pound per cubic foot). See the formula, worked examples, conversion table, and common uses.
Carats per Quart to Pounds 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 0.2113376419 / 16.01846337.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Carats per Quart to Pounds per Cubic foot
Carat per Quart and Pound 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
pounds per cubic foot = carats per quart × 0.0131933779759
This factor comes from each unit's defined relationship to the category's base unit: 1 carat per quart equals 0.211337641887 base units, and 1 pound per cubic foot equals 16.018463374 base units, so dividing one by the other gives the direct carat per quart-to-pound per cubic foot factor of 0.0131933779759.
Simple example
1 ct/qt × 0.01319337798 = 0.013193378 lb/ft3
1 carat per quart = 0.013193378 pounds per cubic foot.
Real-world example
1,000 ct/qt × 0.01319337798 = 13.19337798 lb/ft3
1,000 carats per quart = 13.19337798 pounds per cubic foot.
Conversion table
| Carat per Quart (ct/qt) | Pound per Cubic foot (lb/ft3) |
|---|---|
| 0.1 ct/qt | 0.0013193378 lb/ft3 |
| 1 ct/qt | 0.013193378 lb/ft3 |
| 10 ct/qt | 0.1319337798 lb/ft3 |
| 100 ct/qt | 1.319337798 lb/ft3 |
| 1,000 ct/qt | 13.19337798 lb/ft3 |
| 10,000 ct/qt | 131.9337798 lb/ft3 |
Reverse conversion: Pound per Cubic foot to Carat per Quart
0.013193378 lb/ft3 × 75.79560002 = 1.000000002 ct/qt
0.013193378 pounds per cubic foot = 1.000000002 carats per quart.
carats per quart = pounds per cubic foot × 75.7956000217
For a page dedicated to this direction, see Pound per Cubic foot to Carat per Quart.
Understanding the Carat per Quart (ct/qt)
Mass per volume density.
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
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 pounds per cubic foot are in 1 carat per quart?
1 carat per quart equals 0.013193378 pounds per cubic foot, using the exact defined conversion factor rather than an estimate.
How do I convert carat per quart to pound per cubic foot?
Multiply the carat per quart value by 0.01319337798. The converter above does this instantly to whatever precision you set.
How do I convert pound per cubic foot back to carat per quart?
Use the reverse factor: 1 pound per cubic foot equals 75.79560002 carats per quart. You can also use the swap control in the converter above to flip the direction instantly.
What is a carat per quart?
Carat per Quart (ct/qt) is a unit of density.
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.
Is the carat per quart to pound per cubic foot conversion exact?
Yes. Both carat per quart and pound per cubic foot are defined by fixed standards rather than physical artifacts, so the factor of 0.01319337798 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.