Mass per volume density.
Pound per Cubic inches to Carats per Teaspoon Converter — lb/in3 to ct/tsp
Convert Pound per Cubic inch (lb/in3) to Carat per Teaspoon (ct/tsp) using the exact conversion factor (1 pound per cubic inch = 682.1604002 carat per teaspoon). See the formula, worked examples, conversion table, and common uses.
Pound per Cubic inches to Carats per Teaspoon 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 27679.90471 / 40.57682724.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pound per Cubic inches to Carats per Teaspoon
Pound per Cubic inch and Carat per Teaspoon 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 inch is most often used for used in machining and materials engineering, particularly for describing the density of metals, where a smaller volume unit than the cubic foot gives a more convenient figure.
Formula
carats per teaspoon = pound per cubic inches × 682.160400195
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per cubic inch equals 27679.9047102 base units, and 1 carat per teaspoon equals 40.5768272422 base units, so dividing one by the other gives the direct pound per cubic inch-to-carat per teaspoon factor of 682.160400195.
Simple example
1 lb/in3 × 682.1604002 = 682.1604002 ct/tsp
1 pound per cubic inch = 682.1604002 carats per teaspoon.
Real-world example
1,000 lb/in3 × 682.1604002 = 682,160.4002 ct/tsp
1,000 pound per cubic inches = 682,160.4002 carats per teaspoon.
Conversion table
| Pound per Cubic inch (lb/in3) | Carat per Teaspoon (ct/tsp) |
|---|---|
| 0.1 lb/in3 | 68.21604002 ct/tsp |
| 1 lb/in3 | 682.1604002 ct/tsp |
| 10 lb/in3 | 6,821.604002 ct/tsp |
| 100 lb/in3 | 68,216.04002 ct/tsp |
| 1,000 lb/in3 | 682,160.4002 ct/tsp |
| 10,000 lb/in3 | 6,821,604.002 ct/tsp |
Reverse conversion: Carat per Teaspoon to Pound per Cubic inch
682.1604002 ct/tsp × 0.001465930886 = 1 lb/in3
682.1604002 carats per teaspoon = 1 pound per cubic inches.
pound per cubic inches = carats per teaspoon × 0.00146593088622
For a page dedicated to this direction, see Carat per Teaspoon to Pound per Cubic inch.
Understanding the Pound per Cubic inch
Pound per Cubic inch (lb/in3) measures density. A US customary density unit suited to describing dense materials in a small volume. It is classified as a US customary density unit.
Where it's used: United States
Uses of the Pound per Cubic inch today
- Used in machining and materials engineering, particularly for describing the density of metals, where a smaller volume unit than the cubic foot gives a more convenient figure
Understanding the Carat per Teaspoon (ct/tsp)
Mass per volume density.
Pound per Cubic inch — sources
- US materials-engineering reference tables — Pounds per cubic inch is a commonly tabulated density unit for metals in US machining and materials references.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many carats per teaspoon are in 1 pound per cubic inch?
1 pound per cubic inch equals 682.1604002 carats per teaspoon, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cubic inch to carat per teaspoon?
Multiply the pound per cubic inch value by 682.1604002. The converter above does this instantly to whatever precision you set.
How do I convert carat per teaspoon back to pound per cubic inch?
Use the reverse factor: 1 carat per teaspoon equals 0.0014659309 pound per cubic inches. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per cubic inch?
Pound per Cubic inch (lb/in3) measures density. A US customary density unit suited to describing dense materials in a small volume. It is classified as a US customary density unit.
What is a carat per teaspoon?
Carat per Teaspoon (ct/tsp) is a unit of density.
Is the pound per cubic inch to carat per teaspoon conversion exact?
Yes. Both pound per cubic inch and carat per teaspoon are defined by fixed standards rather than physical artifacts, so the factor of 682.1604002 used above is exact to as many digits as you choose to display.
Where is the pound per cubic inch still used today?
United States
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.