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Grams per cm³ to Kilograms per m³ Density Converter

↔ Convert kg/m³ to g/cm³ instead

Common Conversions

g/cm³ kg/m³
0.1 100
0.5 500
1 1000
2 2000
5 5000
10 10000
25 25000
50 50000
100 100000
1000 1000000

Why this conversion matters in chemistry

Chemistry density tables run in g/cm³ because the numbers come out clean — water at 1.00, ethanol at 0.789, mercury at 13.534 (all near 20 °C). Engineering and CFD work prefers kg/m³ because that's the SI base, where the joule and the newton cancel cleanly. The conversion is a clean factor of 1000, falling out of (10⁻³ kg per gram) divided by (10⁻⁶ m³ per cm³). The multiplication is what lets a density measured on a benchtop densimeter feed into a process-simulation mesh, or a tabulated chemistry value land in a fluid-dynamics calculation written in pure SI.

Formula

kg/m³ = g/cm³ × 1000

Worked Examples

1 g/cm³ = 1000 kg/m³

The density of water at 4 °C — the calibration anchor that defines the kg in the original SI definition.

2.7 g/cm³ = 2700 kg/m³

Aluminum density — useful for cross-checking a casting or a structural component spec.

0.789 g/cm³ = 789 kg/m³

Ethanol density at 25 °C — appears in any solvent-quantity calculation that crosses between mass and volume.

Frequently Asked Questions

How do I convert g/cm³ to kg/m³?
Multiply by 1000. Since 1 g is 10⁻³ kg and 1 cm³ is 10⁻⁶ m³, the ratio is exactly 1000. So 1 g/cm³ becomes 1000 kg/m³ with no rounding.
Why do chemistry tables use g/cm³?
The numbers are convenient at the scale of typical liquids and solids — water at 1.00, organic solvents at 0.7–1.5, metals at 2–20. The same values in kg/m³ become 1000 to 20,000, which are harder to read and compare at a glance.
How does density show up in molarity calculations?
Density bridges mass and volume in solution. To get molarity from a mass-percent solution: M = (density × 1000 × mass%) / (molar mass × 100), with density in g/mL (which equals g/cm³). Concentrated reagent calculations — e.g., 12 M HCl from 37% concentrated stock at 1.19 g/mL — all run through this relationship.