Density & Concentration Converter
Enter a value below to convert between metric, imperial, and standard density & concentration units.
Convert Density & Concentration
Enter a value and select the units to convert between kg/m³, g/cm³, and lb/ft³.
You can change the units using the dropdowns above or click on a unit button.
Common Density & Concentration Reference Points
Here are some common density & concentration values in Kilogram per Cubic Meter (kg/m³), Gram per Cubic Centimeter (g/cm³), and Pound per Cubic Foot (lb/ft³). Click any preset value or arrow to load it into the converter.
| Description | Kilogram per Cubic Meter (kg/m³) | Gram per Cubic Centimeter (g/cm³) | Pound per Cubic Foot (lb/ft³) |
|---|---|---|---|
| Air at sea level (~1.225 kg/m³) | 1.225 | 0.001225 | 0.07647 |
| Gasoline (~750 kg/m³) | 750 | 0.75 | 46.82097 |
| Pure water at 4 °C (1,000 kg/m³) | 1,000 | 1 | 62.42796 |
| Aluminum (~2,700 kg/m³) | 2,700 | 2.7 | 168.55549 |
| Structural steel (~7,850 kg/m³) | 7,850 | 7.85 | 490.05949 |
Density & Concentration Conversion Formulas
Use the following formulas to convert between kg/m³, g/cm³, and lb/ft³.
1 g/cm³ (or 1 g/mL) equals exactly 1,000 kg/m³. In dilute aqueous solutions, 1 mg/L equals 1 part per million (ppm).
More Kilogram per Cubic Meter & Gram per Cubic Centimeter Conversions
Convert from kg/m³
Frequently Asked Questions
All Density & Concentration Conversion Calculators (6)
Select any dedicated density & concentration pair below for worked examples and printable tables
Category Conversion Matrix
Simultaneous comparison of 13 units in this category
Density & Concentration Unit Definitions & Symbols
Kilogram per Cubic Meter (kg/m³)
SISI coherent unit of density (identically equal to 1 g/L).
Gram per Cubic Centimeter (g/cm³)
METRICEqual to 1,000 kg/m³ (water density at 4 °C = 1.0 g/cm³).
Gram per Milliliter (g/mL)
METRICIdentical to 1 g/cm³ (1,000 kg/m³).
Gram per Liter (g/L)
METRICEqual to 1 kg/m³ (1,000 mg/L).
Milligram per Liter (mg/L)
METRICSolution concentration unit equal to 0.001 g/L (1 ppm in water).
Microgram per Liter (µg/L)
METRICEqual to 0.001 mg/L (1 part per billion in water).
Nanogram per Liter (ng/L)
METRICEqual to 10⁻⁶ mg/L.
Gram per Cubic Meter (g/m³)
METRICEqual to 0.001 kg/m³ (1 mg/L).
Milligram per Cubic Meter (mg/m³)
METRICEqual to 1 µg/L.
Pound per Cubic Foot (lb/ft³)
IMPERIALEqual to 16.0185 kg/m³.
Pound per Cubic Inch (lb/in³)
IMPERIALEqual to 27,679.9 kg/m³.
Pound per Cubic Yard (lb/yd³)
IMPERIALEqual to 0.59328 kg/m³.
Pound per US Gallon (lb/gal)
US CUSTOMARYEqual to 119.826 g/L (water is approx. 8.345 lb/gal).
References
- [1]NIST OWM StandardNIST OWM (SI Units — Volume & Mass Concentration)·Density & Concentration Metrology Standards — Kilogram per Cubic Meter (kg/m³), Gram per Cubic Centimeter (g/cm³) & Gram per Milliliter (g/mL)
- [2]NIST SP 811 ReferenceNIST SP 811 (NIST SP 811 App. B.9 (Mass Density))·International Reference Specification for Material Density & Solution Concentration
- [3]BIPM TablesBIPM (Coherent SI Density Standards (kg/m³))·Official Density & Concentration Conversion Factors & Rounding Rules