# Density Converter

Free density converter. Convert between kg/m³, g/cm³, g/mL, kg/L, lb/ft³, lb/in³, and oz/in³ with precise conversion factors.

## What this calculates

Convert between all common density units including kg/m³, g/cm³, g/mL, kg/L, lb/ft³, and lb/in³. Essential for chemistry, physics, materials science, and engineering.

## Inputs

- **Value** — min 0
- **From** — options: kg/m³, g/cm³, g/mL, kg/L, lb/ft³, lb/in³, oz/in³
- **To** — options: kg/m³, g/cm³, g/mL, kg/L, lb/ft³, lb/in³, oz/in³

## Outputs

- **Result** — The converted density value.
- **Conversion** — formatted as text — Step-by-step conversion explanation.

## Details

Density is the mass per unit volume of a substance. Different fields and regions use different density units.

Key Conversion Factors

- 1 g/cm³ = 1,000 kg/m³ = 1 g/mL = 1 kg/L

- 1 lb/ft³ = 16.018 kg/m³

- 1 lb/in³ = 27,680 kg/m³

Common Densities

- Water: 1,000 kg/m³ (1 g/cm³) at 4°C

- Air: 1.225 kg/m³ at sea level

- Steel: 7,800-8,050 kg/m³

- Aluminum: 2,700 kg/m³

- Gold: 19,300 kg/m³

- Wood (oak): 600-900 kg/m³

Density determines whether an object floats or sinks. Objects with density less than water (1 g/cm³) float in water.

## Frequently Asked Questions

**Q: How do I convert g/cm³ to kg/m³?**

A: Multiply by 1,000. For example, water has a density of 1 g/cm³ = 1,000 kg/m³. This is because there are 1,000,000 cm³ in 1 m³ and 1,000 g in 1 kg: (1 g/cm³) × (1,000,000 cm³/m³) × (1 kg/1,000 g) = 1,000 kg/m³.

**Q: What is the density of water?**

A: Water has a density of 1,000 kg/m³ (1 g/cm³, 1 g/mL, or 62.43 lb/ft³) at 4°C, which is its maximum density. At room temperature (25°C), water density is slightly lower at 997 kg/m³.

**Q: What is the difference between density and specific gravity?**

A: Density is mass per unit volume (e.g., kg/m³), while specific gravity is the ratio of a substance's density to the density of water. Specific gravity is dimensionless. For example, gold has a specific gravity of 19.3, meaning it is 19.3 times denser than water.

**Q: Why is g/cm³ equal to g/mL?**

A: Because 1 cm³ is exactly equal to 1 mL by definition. The milliliter was originally defined as 1 cm³, so 1 g/cm³ = 1 g/mL = 1 kg/L = 1,000 kg/m³. These are all equivalent ways to express the same density.

---

Source: https://vastcalc.com/calculators/conversion/density-conversion
Category: Conversion
Last updated: 2026-04-21