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Density Converter

kg/m³, g/cm³, lb/ft³ and lb/in³ density units.

Best for: Use it in science, engineering and shipping to convert material densities.

Complete guide

Input

From
To
How it's calculated & sources
The Density Converter uses the standard, deterministic formula, so the same inputs always produce the same result. It runs entirely in your browser, so your inputs are never uploaded. Last reviewed June 2026.

Free & no sign-up · runs entirely in your browser. Results are estimates for general information, not professional advice — verify important decisions with a qualified expert. Last reviewed June 2026.

How it works

Density = mass / volume. SI: kg/m³. Water ≈ 1 g/cm³ = 1,000 kg/m³.

Example

Aluminum ≈ 2.7 g/cm³ = 2,700 kg/m³.

Frequently asked questions

Is conversion real-time?+

Yes — values update instantly as you type in either field, with full bidirectional input.

Where does the density reference come from?+

All factors are SI-anchored using internationally accepted conversions.

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Complete guide

Quick answers

Short, sourced answers to the questions people (and AI assistants) ask most.

What is Density?
A density converter changes density between kilograms per cubic metre, grams per cubic centimetre and pounds per cubic foot.
Why does Density matter?
The same density in your target unit.
How is Density calculated?
Each value is converted through kg/m^3 (the SI unit) and then to your chosen unit. Formula: 1 g/cm^3 = 1,000 kg/m^3 = 62.428 lb/ft^3; water is about 1 g/cm^3 (1,000 kg/m^3).
What are common density mistakes?
Confusing density (mass/volume) with specific gravity (a ratio to water).
When should you use the Density Converter?
Use it in science, engineering and shipping to convert material densities.

What is the Density Converter?

A density converter changes density between kilograms per cubic metre, grams per cubic centimetre and pounds per cubic foot.

How the Density Converter works

Each value is converted through kg/m^3 (the SI unit) and then to your chosen unit.

1 g/cm^3 = 1,000 kg/m^3 = 62.428 lb/ft^3; water is about 1 g/cm^3 (1,000 kg/m^3)

Density conversions — kg/m³, g/cm³, lb/ft³, lb/gal (US)

11.00e-30.06248.35e-3
1000.16.240.8345
5000.531.214.17
1000162.438.35
20002124.916.69
78507.85490.165.51

Common mistakes to avoid

  • Confusing density (mass/volume) with specific gravity (a ratio to water).
  • Mixing mass and weight units.
  • Forgetting density changes with temperature for liquids and gases.

Keywords: density, mass, volume.

Reviewed by the Free Tools Galaxy editorial team · Updated June 2026 · Calculated privately in your browser.

Frequently asked questions

Is the Density Converter free to use?+

Yes. Every tool on Free Tools Galaxy is 100% free, runs in your browser and requires no signup.

How accurate is the Density Converter?+

Density Converter uses the standard density formula in double-precision arithmetic, so the same inputs always produce the same result and you can verify any figure by hand. It is an educational estimate — real-world outcomes depend on your actual rates, rules and assumptions.

Do you store my inputs?+

No. The Density Converter runs entirely in your browser. Nothing is uploaded or saved to a server.

Can I use the Density Converter on mobile?+

Yes — the interface is fully responsive and works on phones, tablets and desktops.

What are common mistakes to avoid?+

The most frequent mistake is mixing units. Double-check your inputs use a single, consistent unit before clicking Calculate.

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kg/m³, g/cm³, lb/ft³ and lb/in³ density units.

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