Density Converter

Convert between different units of density - kg/m³, g/cm³, lb/ft³, and more.

Result: 0.0000

What It Does

A Density Converter is a specialized tool for converting between different units of density measurement. Density is mass per unit volume, measuring how much matter is packed into a given space. The converter converts between metric units like kg/m³ (kilograms per cubic meter) and g/cm³ (grams per cubic centimeter), and imperial units like lb/ft³ (pounds per cubic foot) and lb/in³ (pounds per cubic inch), as well as liquid density units like g/mL (grams per milliliter) and lb/gal (pounds per gallon). This tool is essential for materials science, chemistry, physics, engineering, and any application involving material properties. It provides accurate conversions with high precision, supporting both metric (SI) and imperial systems. Perfect for understanding material densities, comparing substance properties, calculating buoyancy, and working with density-related calculations.

Key Features:

  • Convert between 7 common density units (kg/m³, g/cm³, g/mL, lb/ft³, lb/in³, oz/gal, lb/gal)
  • Real-time conversion as you type - instant results
  • Swap button to quickly reverse conversion direction
  • High precision results with up to 4 decimal places
  • Support for both metric and imperial density systems
  • Liquid density: g/mL and lb/gal for fluid measurements
  • Material density: kg/m³ and g/cm³ for solids
  • Mobile-responsive design for on-the-go conversions

How To Use

Convert densities instantly between different units. Perfect for materials science, chemistry, physics, and engineering applications.

1

Enter the Density Value

Type or paste the density value you want to convert into the "Value" input field. You can enter whole numbers or decimals (e.g., 1000, 2.7, 0.001).

2

Select Source Unit

Choose the unit you're converting FROM using the "From" dropdown. Options include kg/m³, g/cm³, g/mL, lb/ft³, lb/in³, oz/gal, and lb/gal.

3

Select Target Unit

Choose the unit you want to convert TO using the "To" dropdown. The result updates automatically as you make your selection.

4

View Result

See the converted density value displayed prominently in the result box. The conversion happens in real-time as you type or change units.

5

Swap Units (Optional)

Click the swap button (⇄) to instantly reverse the conversion direction, swapping the "From" and "To" units without re-entering the value.

Pro Tips

  • •Water density: 1,000 kg/m³ = 1 g/cm³ = 1 g/mL at 4°C
  • •1 g/cm³ = 1,000 kg/m³ = 62.428 lb/ft³
  • •Density varies with temperature (especially for liquids)
  • •g/cm³ and g/mL are numerically equal (1 cm³ = 1 mL)
  • •Material densities help determine if objects float or sink
  • •Common materials: aluminum ~2.7 g/cm³, iron ~7.87 g/cm³, gold ~19.3 g/cm³

Benefits

Materials Science: Convert material densities for research and analysis
Chemistry: Convert density measurements for experiments and calculations
Engineering: Convert density specifications for design and materials selection
Physics: Convert density values for scientific calculations
Education: Learn density relationships and unit conversions
Accuracy: Eliminate manual calculation errors in density conversions
Time Saving: Instant conversions save time over manual calculations
Buoyancy: Understand density for floating and sinking calculations

Use Cases

Material Selection

Convert material densities for engineering and design. Engineers need to compare material densities in consistent units for material selection.

Convert aluminum density 2.7 g/cm³ to kg/m³ (2,700 kg/m³) for material specifications

Chemistry and Laboratory

Convert density measurements for chemical experiments and solutions. Chemists work with various density units depending on the application.

Convert solution density 1.2 g/mL to kg/m³ (1,200 kg/m³) for chemistry calculations

Buoyancy Calculations

Convert densities for buoyancy and floating calculations. Understanding density helps determine if objects float or sink in fluids.

Convert water density 1,000 kg/m³ to g/cm³ (1.0 g/cm³) for buoyancy analysis

Quality Control

Convert density measurements for quality control and material testing. Different industries may use different density units.

Convert material density 150 lb/ft³ to kg/m³ (2,403.03 kg/m³) for quality testing

Scientific Research

Convert density values for scientific research and data analysis. Scientists often need to convert between different density units.

Convert substance density 0.8 g/cm³ to lb/ft³ (49.94 lb/ft³) for research documentation

Frequently Asked Questions

1 What is density and how is it calculated?
Density is mass per unit volume, calculated as: Density = Mass ÷ Volume. It measures how much matter is packed into a given space. Higher density means more mass in the same volume. Density is measured in units like kg/m³ (kilograms per cubic meter) or g/cm³ (grams per cubic centimeter). For example, water has a density of 1,000 kg/m³, meaning 1 cubic meter of water has a mass of 1,000 kilograms.
2 Why does water density equal 1 g/cm³?
Water has a density of 1,000 kg/m³, which equals 1 g/cm³ (since 1,000 kg = 1,000,000 g and 1 m³ = 1,000,000 cm³, so 1,000,000 g ÷ 1,000,000 cm³ = 1 g/cm³). This convenient relationship makes water a reference standard for density. Substances denser than water (>1 g/cm³) sink in water, while substances less dense (<1 g/cm³) float. This is why ice (0.92 g/cm³) floats on water.
3 How does temperature affect density?
Temperature significantly affects density, especially for liquids and gases. Most substances expand when heated, decreasing density. Water is unique: it reaches maximum density at 4°C (1,000 kg/m³), and both heating and cooling from this temperature decrease density. This is why ice floats (less dense) and why lakes don't freeze completely (cold water sinks). For precise work, density values should specify temperature. The converter uses standard reference values, typically at room temperature or 4°C for water.
4 What is the difference between g/cm³ and g/mL?
Grams per cubic centimeter (g/cm³) and grams per milliliter (g/mL) are numerically equal because 1 cubic centimeter equals 1 milliliter. So 1 g/cm³ = 1 g/mL. Both are commonly used for liquid and solid densities. The difference is mainly in context: g/cm³ is often used for solids, while g/mL is often used for liquids, but they're interchangeable for conversion purposes.
5 How do I use density to determine if something floats?
An object floats if its density is less than the fluid it's in. For example, wood (typically 0.5-0.8 g/cm³) floats in water (1.0 g/cm³) because wood is less dense. Ice (0.92 g/cm³) floats in water. A ship floats because its average density (including air inside) is less than water. To determine floating: compare object density to fluid density. If object density < fluid density, it floats. If object density > fluid density, it sinks.
6 What are typical density values for common materials?
Common material densities: Air: ~0.0012 g/cm³, Wood: 0.3-0.8 g/cm³, Water: 1.0 g/cm³, Aluminum: 2.7 g/cm³, Iron: 7.87 g/cm³, Lead: 11.3 g/cm³, Gold: 19.3 g/cm³, Platinum: 21.5 g/cm³. These values are approximate and vary with temperature, purity, and material composition. The converter helps you work with any density value in any unit system.

Related Tools

Length Converter

Convert between different units of length and distance - meters, feet, miles, kilometers, and more.

Weight Converter

Convert between different units of weight and mass - kilograms, pounds, ounces, grams, and more.

Temperature Converter

Convert between Celsius, Fahrenheit, and Kelvin temperature scales.

Volume Converter

Convert between different units of volume and capacity - liters, gallons, cups, milliliters, and more.

Area Converter

Convert between different units of area and surface - square meters, acres, square feet, hectares, and more.

Speed Converter

Convert between different units of speed and velocity - km/h, mph, m/s, knots, and more.