Mass per volume density.
Kilograms per Cubic Meter to Pound per Cubic inches Converter — kg/m3 to lb/in3
Convert Kilogram per Cubic Meter (kg/m3) to Pound per Cubic inch (lb/in3) using the exact conversion factor (1 kilogram per cubic meter = 0.0000361273 pound per cubic inch). See the formula, worked examples, conversion table, unit comparison, and common uses.
Kilograms per Cubic Meter to Pound per Cubic inches 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 1 / 27679.90471.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Kilograms per Cubic Meter to Pound per Cubic inches
Kilogram per Cubic Meter and Pound per Cubic inch 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. Kilogram per Cubic Meter is typically associated with universal — the official SI unit for density, used throughout physics and engineering worldwide, while Pound per Cubic inch is typically associated with united States.
Formula
pound per cubic inches = kilograms per cubic meter × 0.0000361272920001
This factor comes from each unit's defined relationship to the category's base unit: 1 kilogram per cubic meter equals 1 base unit, and 1 pound per cubic inch equals 27679.9047102 base units, so dividing one by the other gives the direct kilogram per cubic meter-to-pound per cubic inch factor of 0.0000361272920001.
Simple example
1 kg/m3 × 0.000036127292 = 0.0000361273 lb/in3
1 kilogram per cubic meter = 0.0000361273 pound per cubic inches.
Real-world example
1,000 kg/m3 × 0.000036127292 = 0.036127292 lb/in3
1,000 kilograms per cubic meter = 0.036127292 pound per cubic inches.
Conversion table
| Kilogram per Cubic Meter (kg/m3) | Pound per Cubic inch (lb/in3) |
|---|---|
| 0.1 kg/m3 | 0.0000036127 lb/in3 |
| 1 kg/m3 | 0.0000361273 lb/in3 |
| 10 kg/m3 | 0.0003612729 lb/in3 |
| 100 kg/m3 | 0.0036127292 lb/in3 |
| 1,000 kg/m3 | 0.036127292 lb/in3 |
| 10,000 kg/m3 | 0.36127292 lb/in3 |
Reverse conversion: Pound per Cubic inch to Kilogram per Cubic Meter
0.0000361273 lb/in3 × 27679.90471 = 1.000000221 kg/m3
0.0000361273 pound per cubic inches = 1.000000221 kilograms per cubic meter.
kilograms per cubic meter = pound per cubic inches × 27679.9047102
For a page dedicated to this direction, see Pound per Cubic inch to Kilogram per Cubic Meter.
Kilogram per Cubic Meter vs. Pound per Cubic inch
| Aspect | Kilogram per Cubic Meter | Pound per Cubic inch |
|---|---|---|
| Family | SI coherent derived unit | US customary density unit |
| Typical use | Physics and engineering reference density values | 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 |
| Where it's used | Universal — the official SI unit for density, used throughout physics and engineering worldwide | United States |
Understanding the Kilogram per Cubic Meter
Kilogram per Cubic Meter (kg/m3) measures density. The SI coherent unit for density — the form all other metric density/concentration units in this catalog are ultimately defined relative to. It is classified as a SI coherent derived unit.
Where it's used: Universal — the official SI unit for density, used throughout physics and engineering worldwide
kg/m³ vs. g/L vs. kg/L. All three are exactly related: 1 kg/m³ = 1 g/L, and 1,000 kg/m³ = 1 kg/L. kg/m³ is the formal SI-coherent form; g/L and kg/L are more commonly used in everyday and laboratory contexts.
Uses of the Kilogram per Cubic Meter today
- Physics and engineering reference density values
- Material property tables in scientific literature
- Fluid dynamics and structural engineering calculations
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
Kilogram per Cubic Meter — sources
- BIPM SI Brochure, 9th edition — Kilogram per cubic meter as the SI coherent derived unit for 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 pound per cubic inches are in 1 kilogram per cubic meter?
1 kilogram per cubic meter equals 0.0000361273 pound per cubic inches, using the exact defined conversion factor rather than an estimate.
How do I convert kilogram per cubic meter to pound per cubic inch?
Multiply the kilogram per cubic meter value by 0.000036127292. The converter above does this instantly to whatever precision you set.
How do I convert pound per cubic inch back to kilogram per cubic meter?
Use the reverse factor: 1 pound per cubic inch equals 27,679.90471 kilograms per cubic meter. You can also use the swap control in the converter above to flip the direction instantly.
What is a kilogram per cubic meter?
Kilogram per Cubic Meter (kg/m3) measures density. The SI coherent unit for density — the form all other metric density/concentration units in this catalog are ultimately defined relative to. It is classified as a SI coherent derived unit.
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.
Is the kilogram per cubic meter to pound per cubic inch conversion exact?
Yes. Both kilogram per cubic meter and pound per cubic inch are defined by fixed standards rather than physical artifacts, so the factor of 0.000036127292 used above is exact to as many digits as you choose to display.
What is the difference between kg/m³ vs. g/l vs. kg/l?
All three are exactly related: 1 kg/m³ = 1 g/L, and 1,000 kg/m³ = 1 kg/L. kg/m³ is the formal SI-coherent form; g/L and kg/L are more commonly used in everyday and laboratory contexts.
Where is the kilogram per cubic meter still used today?
Universal — the official SI unit for density, used throughout physics and engineering worldwide