Is Density Converter free to use?

Yes, Density Converter is completely free. No subscription, no credit card, and no account required — ever.

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No account is needed. Density Converter works instantly in your browser — just open the page and start using it.

Is Density Converter safe? Does it store my data?

Density Converter processes your data locally in your browser. Nothing is sent to or stored on our servers.

How do I use Density Converter?

Open the tool, enter or paste your input, and your result appears instantly. Use the copy button to save it. The whole process takes under a minute.

Density Converter

Convert density between kg/m³, g/cm³, lb/ft³, and other density units.

Convert Units

From:

To:

Result:

Convert density measurements between different units including kilograms per cubic meter, grams per cubic centimeter, pounds per cubic foot, and more.

What is Density Converter?

Density is mass per unit volume. It describes how much matter is packed into a given space.

Understanding the Units

Kilogram per Cubic Meter (kg/m³)

SI unit of density.

Common Uses: Science, engineering

Gram per Cubic Centimeter (g/cm³)

Commonly used density unit.

Common Uses: Chemistry, materials science

Conversion: 1 g/cm³ = 1,000 kg/m³

Pound per Cubic Foot (lb/ft³)

Imperial density unit.

Common Uses: Construction, US engineering

Conversion: 1 lb/ft³ = 16.02 kg/m³

Common Conversions

Water: 1 g/cm³ = 1,000 kg/m³ = 62.4 lb/ft³
Air (at sea level): 1.2 kg/m³ = 0.075 lb/ft³
Steel: 7.85 g/cm³ = 7,850 kg/m³ = 490 lb/ft³
Gold: 19.3 g/cm³ = 19,300 kg/m³ = 1,205 lb/ft³

Conversion Formulas

Density = Mass ÷ Volume (ρ = m/V)
g/cm³ to kg/m³: kg/m³ = g/cm³ × 1,000
kg/m³ to g/cm³: g/cm³ = kg/m³ ÷ 1,000
kg/m³ to lb/ft³: lb/ft³ = kg/m³ × 0.0624
lb/ft³ to kg/m³: kg/m³ = lb/ft³ × 16.018

Practical Examples

Objects with density < 1 g/cm³ float on water (e.g. ice: 0.917 g/cm³)

Aluminium: 2.7 g/cm³ — used in aircraft for its low density strength ratio

Concrete: ~2.3 g/cm³ = 2,300 kg/m³ = 143 lb/ft³

Cork: ~0.12 g/cm³ — floats very easily, used for bottle stoppers

When to Use Each Unit

kg/m³: Standard scientific and engineering calculations (SI unit)

g/cm³: Chemistry and materials science — easy comparison to water (1 g/cm³)

lb/ft³: US construction, building materials, and engineering applications

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