kg/m³ to g/cm³ Converter

Convert density between kilograms per cubic meter (kg/m³) and grams per cubic centimeter (g/cm³) instantly, with formulas, examples, and reference values.

Kilograms per Cubic Meter ⇄ Grams per Cubic Centimeter

kg/m³ → g/cm³

Result in g/cm³:

Formula: g/cm³ = kg/m³ ÷ 1000

g/cm³ → kg/m³

Result in kg/m³:

Formula: kg/m³ = g/cm³ × 1000

Uses exact factor: 1 g/cm³ = 1000 kg/m³.

How to convert kg/m³ to g/cm³

Both kilograms per cubic meter (kg/m³) and grams per cubic centimeter (g/cm³) are density units. They differ only by powers of 10, so the conversion is very simple.

Conversion formulas

kg/m³ → g/cm³

\(\text{density}_{g/cm^3} = \dfrac{\text{density}_{kg/m^3}}{1000}\)

g/cm³ → kg/m³

\(\text{density}_{kg/m^3} = \text{density}_{g/cm^3} \times 1000\)

Why is the factor 1000?

  • 1 g = 0.001 kg
  • 1 cm = 0.01 m → \(1 \text{ cm}^3 = (0.01 \text{ m})^3 = 10^{-6} \text{ m}^3\)

So:

\(1 \text{ g/cm}^3 = \dfrac{0.001 \text{ kg}}{10^{-6} \text{ m}^3} = 1000 \text{ kg/m}^3\)

Therefore:

  • 1 g/cm³ = 1000 kg/m³
  • 1 kg/m³ = 0.001 g/cm³

Step-by-step example: 2500 kg/m³ to g/cm³

  1. Start with the value: 2500 kg/m³
  2. Divide by 1000: 2500 ÷ 1000 = 2.5
  3. Attach the new unit: 2.5 g/cm³

Step-by-step example: 0.8 g/cm³ to kg/m³

  1. Start with the value: 0.8 g/cm³
  2. Multiply by 1000: 0.8 × 1000 = 800
  3. Attach the new unit: 800 kg/m³

Common densities in kg/m³ and g/cm³

These approximate values are useful checks for your conversions:

Material kg/m³ g/cm³
Water (4 °C) 1000 1.0
Water (room temp.) ≈ 997 ≈ 0.997
Air (sea level) ≈ 1.2 ≈ 0.0012
Ice ≈ 917 ≈ 0.917
Aluminum ≈ 2700 ≈ 2.7
Steel ≈ 7850 ≈ 7.85
Gold ≈ 19300 ≈ 19.3

FAQ

Is kg/m³ or g/cm³ more common?

In engineering and physics, kg/m³ is standard (SI unit). In chemistry, materials science, and lab work, g/cm³ is often preferred because values are typically between 0 and 20 and are easier to read.

How many g/cm³ is 1000 kg/m³?

Using the formula g/cm³ = kg/m³ ÷ 1000:

1000 kg/m³ ÷ 1000 = 1 g/cm³.

How many kg/m³ is 1.5 g/cm³?

Using the formula kg/m³ = g/cm³ × 1000:

1.5 g/cm³ × 1000 = 1500 kg/m³.

How can I avoid mistakes when converting?

  • Remember: divide by 1000 when going from kg/m³ to g/cm³.
  • Remember: multiply by 1000 when going from g/cm³ to kg/m³.
  • Check against a known value, like water: 1000 kg/m³ ↔ 1 g/cm³.