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Density Converter

Convert between different density units including kg/m³, lb/ft³, g/cm³, and more. Perfect for physics, chemistry, engineering, and material science calculations.

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Common Conversions
Quick access to frequently used conversions
Unit Information

Metric Units

International System of Units (SI) measurements

kg/m³
metric
Kilograms per Cubic Meter
Base unit of density in the SI system
g/cm³
metric
Grams per Cubic Centimeter
Common density unit, 1 g/cm³ = 1000 kg/m³
g/L
metric
Grams per Liter
Density unit for liquids and gases
kg/L
metric
Kilograms per Liter
1000 g/L, common for high-density materials
t/m³
metric
Tonnes per Cubic Meter
Metric ton per cubic meter, 1 t/m³ = 1000 kg/m³

Imperial Units

Traditional British and American measurements

lb/ft³
imperial
Pounds per Cubic Foot
Imperial density unit, 1 lb/ft³ = 16.0185 kg/m³
lb/in³
imperial
Pounds per Cubic Inch
High density unit, 1 lb/in³ = 27679.9 kg/m³
lb/gal
imperial
Pounds per Gallon
Liquid density unit, US gallon
oz/in³
imperial
Ounces per Cubic Inch
Lower density unit, 1 oz/in³ = 1729.99 kg/m³
lb/yd³
imperial
Pounds per Cubic Yard
Low density unit, 1 lb/yd³ = 0.593276 kg/m³
oz/ft³
imperial
Ounces per Cubic Foot
Very low density unit, 1 oz/ft³ = 1.00115 kg/m³

Scientific Units

Scientific and technical measurements

g/mL
scientific
Grams per Milliliter
Equivalent to g/cm³, used in chemistry
mg/cm³
scientific
Milligrams per Cubic Centimeter
Low density unit, 1 mg/cm³ = 1 kg/m³
μg/cm³
scientific
Micrograms per Cubic Centimeter
Very low density unit, 1 μg/cm³ = 0.001 kg/m³
ng/cm³
scientific
Nanograms per Cubic Centimeter
Ultra-low density unit, 1 ng/cm³ = 0.000001 kg/m³
slug/ft³
scientific
Slugs per Cubic Foot
Imperial mass unit, 1 slug/ft³ = 515.379 kg/m³
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Common Use Cases

  • •Physics: Material properties, buoyancy, fluid dynamics
  • •Chemistry: Solution concentrations, material identification
  • •Engineering: Structural design, material selection, quality control
  • •Material Science: Alloy composition, composite materials
  • •Construction: Concrete mix design, soil analysis

Popular Conversions

1 g/cm³→1000 kg/m³
1 lb/ft³→16.0185 kg/m³
1000 kg/m³→1 g/cm³
1 lb/gal→119.826 kg/m³

How Our Density Converter Works

1️⃣

Enter Density Value

Input any density value in the "From" field. Our converter accepts decimal numbers and scientific notation.

2️⃣

Select Units

Choose your source unit (e.g., g/cm³) and target unit (e.g., kg/m³) from our comprehensive unit selection.

3️⃣

Get Instant Result

View the converted density value in real-time. Copy results, explore common conversions, or check conversion history.

Understanding Density Units

SI Units (Metric)

kg/m³
Base unit in the SI system. Mass per unit volume.
g/cm³
Common density unit. 1 g/cm³ = 1000 kg/m³.

Imperial Units

lb/ft³
Pounds per cubic foot. 1 lb/ft³ = 16.0185 kg/m³.
lb/gal
Pounds per gallon. Common for liquid densities.

Scientific Units

g/mL
Grams per milliliter. Equivalent to g/cm³.
mg/cm³
Milligrams per cubic centimeter. Low density unit.

Frequently Asked Questions

How accurate is this density converter?

Our density converter uses precise conversion factors and maintains accuracy up to 9 decimal places. All conversions are based on internationally recognized standards.

Can I convert negative density values?

Yes, our converter supports negative values for applications like relative density measurements, density differences, or scientific calculations.

What is the highest density value I can convert?

Our converter can handle density values from -1 trillion to 1 quadrillion units, covering everything from ultra-low density materials to extreme high-density substances.

How do I use scientific notation?

Enable "Show scientific notation" in preferences for very large or small values. You can also input values like 1e6 for 1,000,000.