Density Unit Converter - Convert between density units

Converted Density ():

What is Density Unit Conversion

Density unit conversion involves transforming the density of a substance from one unit to another, such as kg/m³, g/cm³, lb/ft³, or oz/gal. Density is defined as mass per unit volume, and this calculator uses a conversion table to multiply the input value by the appropriate factor to switch between units. The table supports a wide range of units, including metric (kg/m³, g/cm³), imperial (lb/ft³, lb/in³, oz/in³), and gallon-based units (oz/gal, lb/gal) for both Imperial and US systems, as well as long ton/yd³.

For example, a density of 1000 kg/m³ converts to 62.428 lb/ft³.

How to Convert Density Units

Conversion Method: The density in the target unit is calculated as:

\(\rho_{\text{to}} = \rho_{\text{from}} \times \text{Conversion Factor}\)

Where:

\(\rho_{\text{to}}\) = Density in the target unit
\(\rho_{\text{from}}\) = Density in the source unit
\(\text{Conversion Factor}\) = Multiplier from the conversion table

Example Calculation: To convert 1000 kg/m³ to lb/ft³:

Conversion factor from kg/m³ to lb/ft³ = 0.062428.
\(\rho_{\text{lb/ft³}} = 1000 \times 0.062428 = 62.428 \, \text{lb/ft³}\).

Use the form above to select the source and target units and input the density value to perform the conversion.

Density Units and Conversion Factors

The calculator supports the following density units with their conversion factors (multiply by to convert from row unit to column unit):

kg/m³ to g/cm³: 0.001
kg/m³ to oz/in³: 0.00057804
kg/m³ to oz/gal (Imp): 0.1604358
kg/m³ to oz/gal (US): 0.133526
kg/m³ to lb/ft³: 0.062428
kg/m³ to lb/in³: 0.000036127
kg/m³ to lb/yd³: 1.68555
kg/m³ to lb/gal (Imp): 0.0100224
kg/m³ to lb/gal (US): 0.0083454
kg/m³ to long ton/yd³: 0.000752548

Refer to the conversion table for all pairwise factors. Note that factors are approximate and based on standard values (e.g., 1 gal (Imp) = 4546.09 cm³, 1 gal (US) = 3785.41 cm³).

Standard Density Examples

Some standard densities and their conversions include:

Water at 4°C: 1000 kg/m³ = 1 g/cm³ = 0.03613 lb/in³ = 62.43 lb/ft³
Gold: 19320 kg/m³ = 19.32 g/cm³ = 0.69802 lb/in³ = 1206.34 lb/ft³
Air at sea level: 1.225 kg/m³ = 0.001225 g/cm³ = 0.00004 lb/in³ = 0.08 lb/ft³

Use this calculator to convert these values or your own measurements between any supported units.

FAQs

How do you convert between density units?

To convert between density units:

Enter the density value and select the source unit.
Select the target unit.
The calculator multiplies the input value by the conversion factor from the table to get the result.

What is the density of water in lb/ft³ if it is 1000 kg/m³?

The density is \(1000 \times 0.062428 = 62.43 \, \text{lb/ft³}\).

Does the conversion factor vary by system?

Yes, the factors differ between Imperial (e.g., oz/gal (Imp), lb/gal (Imp)) and US (e.g., oz/gal (US), lb/gal (US)) gallons due to their different volumes.