Mass per volume density.
Pound per Cubic inches to Grams per Milliliter Converter — lb/in3 to g/mL
Convert Pound per Cubic inch (lb/in3) to Gram per Milliliter (g/mL) using the exact conversion factor (1 pound per cubic inch = 27.67990471 gram per milliliter). See the formula, worked examples, conversion table, unit comparison, and common uses.
Pound per Cubic inches to Grams per Milliliter 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 / 1000.
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 Grams per Milliliter
Pound per Cubic inch and Gram per Milliliter 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 typically associated with united States, while Gram per Milliliter is typically associated with widely used in chemistry education and laboratory settings internationally.
Formula
grams per milliliter = pound per cubic inches × 27.6799047102
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 gram per milliliter equals 1000 base units, so dividing one by the other gives the direct pound per cubic inch-to-gram per milliliter factor of 27.6799047102.
Simple example
1 lb/in3 × 27.67990471 = 27.67990471 g/mL
1 pound per cubic inch = 27.67990471 grams per milliliter.
Real-world example
1,000 lb/in3 × 27.67990471 = 27,679.90471 g/mL
1,000 pound per cubic inches = 27,679.90471 grams per milliliter.
Conversion table
| Pound per Cubic inch (lb/in3) | Gram per Milliliter (g/mL) |
|---|---|
| 0.1 lb/in3 | 2.767990471 g/mL |
| 1 lb/in3 | 27.67990471 g/mL |
| 10 lb/in3 | 276.7990471 g/mL |
| 100 lb/in3 | 2,767.990471 g/mL |
| 1,000 lb/in3 | 27,679.90471 g/mL |
| 10,000 lb/in3 | 276,799.0471 g/mL |
Reverse conversion: Gram per Milliliter to Pound per Cubic inch
27.67990471 g/mL × 0.036127292 = 1 lb/in3
27.67990471 grams per milliliter = 1 pound per cubic inches.
pound per cubic inches = grams per milliliter × 0.0361272920001
For a page dedicated to this direction, see Gram per Milliliter to Pound per Cubic inch.
Pound per Cubic inch vs. Gram per Milliliter
| Aspect | Pound per Cubic inch | Gram per Milliliter |
|---|---|---|
| Family | US customary density unit | metric derived density unit |
| Typical use | 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 | Commonly used in chemistry coursework and laboratory reporting to express the density of liquids and solutions |
| Where it's used | United States | Widely used in chemistry education and laboratory settings internationally |
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 Gram per Milliliter
Gram per Milliliter (g/mL) measures density. Numerically identical to grams per cubic centimeter and to kilograms per liter, since one milliliter equals one cubic centimeter exactly. It is classified as a metric derived density unit.
Where it's used: Widely used in chemistry education and laboratory settings internationally
Uses of the Gram per Milliliter today
- Commonly used in chemistry coursework and laboratory reporting to express the density of liquids and solutions
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.
Gram per Milliliter — sources
- BIPM SI Brochure — Gram and milliliter as accepted units for expressing density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grams per milliliter are in 1 pound per cubic inch?
1 pound per cubic inch equals 27.67990471 grams per milliliter, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cubic inch to gram per milliliter?
Multiply the pound per cubic inch value by 27.67990471. The converter above does this instantly to whatever precision you set.
How do I convert gram per milliliter back to pound per cubic inch?
Use the reverse factor: 1 gram per milliliter equals 0.036127292 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 gram per milliliter?
Gram per Milliliter (g/mL) measures density. Numerically identical to grams per cubic centimeter and to kilograms per liter, since one milliliter equals one cubic centimeter exactly. It is classified as a metric derived density unit.
Is the pound per cubic inch to gram per milliliter conversion exact?
Yes. Numerically identical to grams per cubic centimeter and to kilograms per liter, since one milliliter equals one cubic centimeter exactly. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.
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.