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Density ConverterConvert between kg/m³, g/cm³, lb/ft³, lb/in³, and kg/L density units.

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Density Converter

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

How to Use
1

Enter density

Type the density value to convert.

2

Select units

Choose source and target density units.

3

Get the result

Converted density appears instantly.

What Is Density Converter?

A density converter translates between different units of mass per volume. Density describes how much mass is packed into a given volume: ρ = m/V. The SI unit is kg/m³, but g/cm³ is more practical for lab work and everyday materials (water = 1 g/cm³). Imperial units lb/ft³ and lb/in³ are used in US engineering. kg/L is numerically equal to g/cm³ and is common in industry. Understanding density is fundamental in materials science, chemistry, fluid mechanics, and manufacturing.

Why Use Our Density Converter?

  • Covers the five most-used density units.
  • Essential for materials science and chemistry.
  • Real-time bidirectional conversion.
  • Quick reference for common material densities.

Common Use Cases

Chemistry

Convert solution densities between metric and imperial units.

Materials Science

Compare material densities across different specification systems.

Manufacturing

Convert material density specifications for international supply chains.

Fluid Engineering

Convert fluid densities for hydraulic and pneumatic calculations.

Technical Guide

Density is mass divided by volume (ρ = m/V). The SI unit is kg/m³. • 1 g/cm³ = 1,000 kg/m³ = 1 kg/L • 1 lb/ft³ = 16.0185 kg/m³ • 1 lb/in³ = 27,679.9 kg/m³ Common densities: • Water: 1.000 g/cm³ = 1,000 kg/m³ • Air (sea level): 1.225 kg/m³ • Steel: 7.8 g/cm³ • Aluminum: 2.7 g/cm³ • Gold: 19.3 g/cm³ Specific gravity is the ratio of a material's density to water's density. Since water is 1 g/cm³, specific gravity numerically equals density in g/cm³.

Tips & Best Practices

  • 1
    Water is the reference: 1 g/cm³ = 1 kg/L = 1,000 kg/m³.
  • 2
    Specific gravity equals density in g/cm³ (relative to water at 4°C).
  • 3
    Objects float if their density is less than the fluid they are in.
  • 4
    g/cm³ and kg/L are numerically identical.

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Frequently Asked Questions

QHow do I convert kg/m³ to g/cm³?
Divide by 1,000. For example, 2,700 kg/m³ = 2.7 g/cm³ (aluminum).
QWhat is the density of water?
Water has a density of 1 g/cm³ (1,000 kg/m³) at 4°C, its maximum density.
QWhat is specific gravity?
Specific gravity is the ratio of a substance's density to that of water. It is dimensionless and numerically equals density in g/cm³.
QIs kg/L the same as g/cm³?
Yes, they are numerically identical. 1 kg/L = 1 g/cm³ = 1,000 kg/m³.
QWhat is denser, gold or lead?
Gold (19.3 g/cm³) is significantly denser than lead (11.3 g/cm³).

About Density Converter

Density Converter is a free online tool from FreeToolkit.ai. All processing happens directly in your browser — your data never leaves your device. No registration required. No ads. Just fast, reliable tools.