Convert Between Units of Density
Density relates mass to volume and is used in materials, fluids, soils, and process calculations. Common units include kg/m^3, g/cm^3, and lb/ft^3. Density affects weight, buoyancy, compaction, and flow behavior. Converting density units is essential when lab results, standards, and design spreadsheets use different conventions.
Popular Density Conversions
Based on conversions run in the last 60 days.
- kg/m3 to mkg/m3 · 1
- kg/m3 to pkg/m3 · 1
- nkg/m3 to kg/m3 · 1
About Density Conversions
Helpful context and notes for converting Density units.
A common source of confusion is g/cm^3 versus kg/m^3. The conversion factor is exactly 1000 because 1 m^3 is 1,000,000 cm^3 and 1 kg is 1000 g. So 1.80 g/cm^3 equals 1800 kg/m^3. This matters in geotechnical reports, materials datasheets, and chemistry. Also note the difference between density (mass/volume) and unit weight (force/volume). Unit weight uses gravity and is often reported in kN/m^3 or lb/ft^3.
Practical tip: keep a few anchors. Water is about 1000 kg/m^3 (1.0 g/cm^3), many soils are around 1600–2200 kg/m^3, and steel is about 7850 kg/m^3. If a density looks off by exactly 1000, suspect a g/cm^3 vs kg/m^3 mismatch. If you need weight from density, apply gravity explicitly: unit weight = density × 9.80665 and then convert N/m^3 to kN/m^3 if needed.
Frequently Asked Questions
Fun Fact
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Supported Units
Common and engineering-specific units supported for this conversion.
- ckg/m3 (centikilograms/cubic meter)
- dakg/m3 (decakilograms/cubic meter)
- dkg/m3 (decikilograms/cubic meter)
- Gkg/m3 (gigakilograms/cubic meter)
- hkg/m3 (hectokilograms/cubic meter)
- kg/m3 (kilograms/cubic meter)
- kkg/m3 (kilokilograms/cubic meter)
- Mkg/m3 (megakilograms/cubic meter)
- μkg/m3 (microkilograms/cubic meter)
- mkg/m3 (millikilograms/cubic meter)
- nkg/m3 (nanokilograms/cubic meter)
- pkg/m3 (picokilograms/cubic meter)
- Tkg/m3 (terakilograms/cubic meter)
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