Mass per volume density.
Carats per Teaspoon to Pounds per Cubic foot Converter — ct/tsp to lb/ft3
Convert Carat per Teaspoon (ct/tsp) to Pound per Cubic foot (lb/ft3) using the exact conversion factor (1 carat per teaspoon = 2.533128571 pound per cubic foot). See the formula, worked examples, conversion table, and common uses.
Carats per Teaspoon 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 40.57682724 / 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 Teaspoon to Pounds per Cubic foot
Carat per Teaspoon 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 teaspoon × 2.53312857138
This factor comes from each unit's defined relationship to the category's base unit: 1 carat per teaspoon equals 40.5768272422 base units, and 1 pound per cubic foot equals 16.018463374 base units, so dividing one by the other gives the direct carat per teaspoon-to-pound per cubic foot factor of 2.53312857138.
Simple example
1 ct/tsp × 2.533128571 = 2.533128571 lb/ft3
1 carat per teaspoon = 2.533128571 pounds per cubic foot.
Real-world example
1,000 ct/tsp × 2.533128571 = 2,533.128571 lb/ft3
1,000 carats per teaspoon = 2,533.128571 pounds per cubic foot.
Conversion table
| Carat per Teaspoon (ct/tsp) | Pound per Cubic foot (lb/ft3) |
|---|---|
| 0.1 ct/tsp | 0.2533128571 lb/ft3 |
| 1 ct/tsp | 2.533128571 lb/ft3 |
| 10 ct/tsp | 25.33128571 lb/ft3 |
| 100 ct/tsp | 253.3128571 lb/ft3 |
| 1,000 ct/tsp | 2,533.128571 lb/ft3 |
| 10,000 ct/tsp | 25,331.28571 lb/ft3 |
Reverse conversion: Pound per Cubic foot to Carat per Teaspoon
2.533128571 lb/ft3 × 0.3947687501 = 0.9999999998 ct/tsp
2.533128571 pounds per cubic foot = 0.9999999998 carats per teaspoon.
carats per teaspoon = pounds per cubic foot × 0.394768750113
For a page dedicated to this direction, see Pound per Cubic foot to Carat per Teaspoon.
Understanding the Carat per Teaspoon (ct/tsp)
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 teaspoon?
1 carat per teaspoon equals 2.533128571 pounds per cubic foot, using the exact defined conversion factor rather than an estimate.
How do I convert carat per teaspoon to pound per cubic foot?
Multiply the carat per teaspoon value by 2.533128571. The converter above does this instantly to whatever precision you set.
How do I convert pound per cubic foot back to carat per teaspoon?
Use the reverse factor: 1 pound per cubic foot equals 0.3947687501 carats per teaspoon. You can also use the swap control in the converter above to flip the direction instantly.
What is a carat per teaspoon?
Carat per Teaspoon (ct/tsp) 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 teaspoon to pound per cubic foot conversion exact?
Yes. Both carat per teaspoon and pound per cubic foot are defined by fixed standards rather than physical artifacts, so the factor of 2.533128571 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.