Mass per volume density.
Pound per Cubic inches to Drams per Teaspoon Converter — lb/in3 to dr/tsp
Convert Pound per Cubic inch (lb/in3) to Dram per Teaspoon (dr/tsp) using the exact conversion factor (1 pound per cubic inch = 77 dram per teaspoon). See the formula, worked examples, conversion table, and common uses.
Pound per Cubic inches to Drams 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 / 359.479282.
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 Drams per Teaspoon
Pound per Cubic inch and Dram 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
drams per teaspoon = pound per cubic inches × 77
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 dram per teaspoon equals 359.479281951 base units, so dividing one by the other gives the direct pound per cubic inch-to-dram per teaspoon factor of 77.
Simple example
1 lb/in3 × 77 = 77 dr/tsp
1 pound per cubic inch = 77 drams per teaspoon.
Real-world example
1,000 lb/in3 × 77 = 77,000 dr/tsp
1,000 pound per cubic inches = 77,000 drams per teaspoon.
Conversion table
| Pound per Cubic inch (lb/in3) | Dram per Teaspoon (dr/tsp) |
|---|---|
| 0.1 lb/in3 | 7.7 dr/tsp |
| 1 lb/in3 | 77 dr/tsp |
| 10 lb/in3 | 770 dr/tsp |
| 100 lb/in3 | 7,700 dr/tsp |
| 1,000 lb/in3 | 77,000 dr/tsp |
| 10,000 lb/in3 | 770,000 dr/tsp |
Reverse conversion: Dram per Teaspoon to Pound per Cubic inch
77 dr/tsp × 0.01298701299 = 1 lb/in3
77 drams per teaspoon = 1 pound per cubic inch.
pound per cubic inches = drams per teaspoon × 0.012987012987
For a page dedicated to this direction, see Dram 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 Dram per Teaspoon (dr/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 drams per teaspoon are in 1 pound per cubic inch?
1 pound per cubic inch equals 77 drams per teaspoon, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cubic inch to dram per teaspoon?
Multiply the pound per cubic inch value by 77. The converter above does this instantly to whatever precision you set.
How do I convert dram per teaspoon back to pound per cubic inch?
Use the reverse factor: 1 dram per teaspoon equals 0.012987013 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 dram per teaspoon?
Dram per Teaspoon (dr/tsp) is a unit of density.
Is the pound per cubic inch to dram per teaspoon conversion exact?
Yes. Both pound per cubic inch and dram per teaspoon are defined by fixed standards rather than physical artifacts, so the factor of 77 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.