Convert density units — kg/m³, g/cm³, lb/ft³, lb/in³ and more.
| Unit | Name | Value |
|---|---|---|
| g/cm³ | Gram/Cubic Centimeter | 0.001 |
| kg/L | Kilogram/Liter | 0.001 |
| lb/ft³ | Pound/Cubic Foot | 0.062427818 |
| lb/in³ | Pound/Cubic Inch | 0.000036127298 |
| oz/in³ | Ounce/Cubic Inch | 0.00057803802 |
| t/m³ | Tonne/Cubic Meter | 0.001 |
Formula: kg/L = kg/m³ × 0.001
Multiply any kg/m³ value by 0.001 to get kg/L.
Reverse: kg/m³ = kg/L × 1000
Common materials — factor: 1 kg/m³ = 0.001 kg/L
| kg/m³ (kg/m³) | kg/L (kg/L) | Material |
|---|---|---|
| 0.0001 kg/m³ | 1.000e-07 kg/L | Near vacuum |
| 0.001 kg/m³ | 1.000e-06 kg/L | Very low density gas |
| 0.1 kg/m³ | 0.0001 kg/L | Low pressure gas |
| 1 kg/m³ | 0.001 kg/L | Hydrogen gas |
| 1.225 kg/m³ | 0.001225 kg/L | Air at sea level |
| 100 kg/m³ | 0.1 kg/L | Light foam |
| 700 kg/m³ | 0.7 kg/L | Wood |
| 917 kg/m³ | 0.917 kg/L | Ice |
| 1000 kg/m³ | 1 kg/L | Water |
| 1025 kg/m³ | 1.025 kg/L | Seawater |
| 1600 kg/m³ | 1.6 kg/L | Sand/gravel |
| 2700 kg/m³ | 2.7 kg/L | Aluminum |
| 7850 kg/m³ | 7.85 kg/L | Steel |
| 1.134e+04 kg/m³ | 11.34 kg/L | Lead |
| 1.93e+04 kg/m³ | 19.3 kg/L | Gold |
kg/m³ ÷ 1,000 = kg/L. Water: 1,000 kg/m³ = 1 kg/L.
Water = 1 kg/L, diesel ≈ 0.85 kg/L, petrol ≈ 0.73 kg/L.
kg/L × 1,000 = kg/m³.
Compares material densities to optimize weight-to-strength ratios in product design.
Calculates dead loads from material densities for structural design in kg/m³ and lb/ft³.
Selects lightweight materials (aluminum, titanium, composites) based on density in g/cm³ or lb/in³.
Measures crude oil and drilling fluid density in kg/m³ or lb/ft³ for reservoir engineering.
Measures soil and rock bulk density in t/m³ for foundation and slope stability analysis.
Uses density in g/cm³ for solution concentration, specific gravity, and process design calculations.
Kilograms per cubic meter (kg/m³) is the SI unit of density, defined as the mass in kilograms contained in one cubic meter of a substance. It became the international standard with the adoption of the SI system in 1960.
Most physical and engineering tables express density in kg/m³: water = 1,000 kg/m³, air = 1.225 kg/m³, steel = 7,850 kg/m³, gold = 19,300 kg/m³. The kg/m³ is the base unit for Archimedes' buoyancy calculations and fluid dynamics.
Interesting fact: The density of the Sun's core is about 150,000 kg/m³ — 150 times denser than water. Osmium, the densest naturally occurring element, has a density of 22,590 kg/m³, nearly twice that of lead.
Kilograms per liter (kg/L) is numerically identical to g/cm³ and 1,000 kg/m³. It is widely used in the fuel industry — diesel density is about 0.82–0.85 kg/L, petrol 0.71–0.77 kg/L — and in the food and beverage industry.
Fuel efficiency calculations require density in kg/L to convert between volume (liters sold) and mass (kilograms of fuel burned). Honey density is about 1.36 kg/L; olive oil 0.91 kg/L; seawater 1.025 kg/L.
Interesting fact: Liquid hydrogen, the most energy-dense rocket fuel by mass, has a density of only 0.071 kg/L — about 14 times less dense than water, requiring enormous tanks despite its high energy content.
Converting kg/m³ to kg/L is common in materials science, engineering, and manufacturing. SI units (kg/m³, g/cm³) are standard in scientific and metric engineering contexts, while Imperial units (lb/ft³, lb/in³) are used in US construction and aerospace. Water at 4°C = 1000 kg/m³ = 1 kg/L — a universal anchor for density comparisons.
Exact factor: 1 kg/m³ = 0.001 kg/L. Reverse: 1 kg/L = 1000 kg/m³.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.