Mass per volume density.
Pound per Cubic inches to Drams per Cubic Millimeter Converter — lb/in3 to dr/mm3
Convert Pound per Cubic inch (lb/in3) to Dram per Cubic Millimeter (dr/mm3) using the exact conversion factor (1 pound per cubic inch = 0.0156220785 dram per cubic millimeter). See the formula, worked examples, conversion table, and common uses.
Pound per Cubic inches to Drams per Cubic Millimeter 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 / 1.7718452e+6.
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 Cubic Millimeter
Pound per Cubic inch and Dram per Cubic Millimeter 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 cubic millimeter = pound per cubic inches × 0.0156220784883
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 cubic millimeter equals 1771845.19531 base units, so dividing one by the other gives the direct pound per cubic inch-to-dram per cubic millimeter factor of 0.0156220784883.
Simple example
1 lb/in3 × 0.01562207849 = 0.0156220785 dr/mm3
1 pound per cubic inch = 0.0156220785 drams per cubic millimeter.
Real-world example
1,000 lb/in3 × 0.01562207849 = 15.62207849 dr/mm3
1,000 pound per cubic inches = 15.62207849 drams per cubic millimeter.
Conversion table
| Pound per Cubic inch (lb/in3) | Dram per Cubic Millimeter (dr/mm3) |
|---|---|
| 0.1 lb/in3 | 0.0015622078 dr/mm3 |
| 1 lb/in3 | 0.0156220785 dr/mm3 |
| 10 lb/in3 | 0.1562207849 dr/mm3 |
| 100 lb/in3 | 1.562207849 dr/mm3 |
| 1,000 lb/in3 | 15.62207849 dr/mm3 |
| 10,000 lb/in3 | 156.2207849 dr/mm3 |
Reverse conversion: Dram per Cubic Millimeter to Pound per Cubic inch
0.0156220785 dr/mm3 × 64.01196875 = 1.000000001 lb/in3
0.0156220785 drams per cubic millimeter = 1.000000001 pound per cubic inches.
pound per cubic inches = drams per cubic millimeter × 64.01196875
For a page dedicated to this direction, see Dram per Cubic Millimeter 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 Cubic Millimeter (dr/mm3)
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 cubic millimeter are in 1 pound per cubic inch?
1 pound per cubic inch equals 0.0156220785 drams per cubic millimeter, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cubic inch to dram per cubic millimeter?
Multiply the pound per cubic inch value by 0.01562207849. The converter above does this instantly to whatever precision you set.
How do I convert dram per cubic millimeter back to pound per cubic inch?
Use the reverse factor: 1 dram per cubic millimeter equals 64.01196875 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 cubic millimeter?
Dram per Cubic Millimeter (dr/mm3) is a unit of density.
Is the pound per cubic inch to dram per cubic millimeter conversion exact?
Yes. Both pound per cubic inch and dram per cubic millimeter are defined by fixed standards rather than physical artifacts, so the factor of 0.01562207849 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.