result equals value times from-factor divided by to-factor
Density Conversion =
Solution in Other Units
Unit
Value
Kilogram / Meter³ (kg/m³)
1
Gram / Centimeter³ (g/cm³)
0.001
Kilogram / Liter (kg/L)
0.001
Gram / Milliliter (g/mL)
0.001
Pound / Foot³ (lb/ft³)
0.062427961
Pound / Inch³ (lb/in³)
3.6127292e-5
Slug / Foot³ (slug/ft³)
0.0019403203
Gram / Meter³ (g/m³)
1000
Kilogram / Deciliter (kg/dL)
0.0001
Milligram / Liter (mg/L)
1000
Ounce / Foot³ (oz/ft³)
0.99884737
Ounce / Inch³ (oz/in³)
0.00057803667
Pound / Bushel UK (lb/bu)
0.080179336
Pound / Bushel US (lb/bu)
0.077688855
Pound / Gallon UK (lb/gal)
0.010022417
Pound / Gallon US (lb/gal)
0.0083454045
Pound / Yard³ (lb/yd³)
1.6855549
Slug / Inch³ (slug/in³)
1.1228706e-6
Ton Metric / Meter³ (t/m³)
0.001
Share:
Density Unit Conversion
Transforms a density value between all supported units using precise factors relative to kg/m³.
result = value × (factor_from ÷ factor_to)
How It Works
This converter transforms a density value from one unit into every other supported density unit using precise multiplication factors. Each unit is defined relative to kg/m³.
Example Problem
Convert 1,000 kg/m³ to lb/ft³.
1,000 × 0.062428 ≈ 62.43 lb/ft³
This is the density of water at 4 °C.
Key Concepts
Density is mass per unit volume, a fundamental physical property that determines whether objects float or sink, how fluids behave, and how materials are specified in engineering. The SI base unit is kg/m³, but g/cm³, lb/ft³, and many other units are common across different industries. All conversions are simple multiplications relative to the kg/m³ base.
Applications
Material science: converting between SI and imperial density units for material specification sheets
Chemical engineering: translating density data between lab units (g/cm³) and process units (kg/m³ or lb/ft³)
Geology: comparing rock and mineral densities reported in different regional unit systems
Common Mistakes
Confusing g/cm³ with kg/m³ — they differ by a factor of 1,000 (water is 1 g/cm³ = 1,000 kg/m³)
Mixing up mass density and weight density — weight density includes gravitational acceleration and has units like N/m³ or lbf/ft³
Using specific gravity as if it has units — specific gravity is dimensionless; multiply by water's density to get actual density
Frequently Asked Questions
What is density?
Density is mass per unit volume, commonly measured in kg/m³ or g/cm³.
How do you convert kg/m³ to lb/ft³?
Multiply by approximately 0.06243.
Why are there so many density units?
Different industries use different systems. Scientists use g/cm³, engineers lb/ft³, SI standard is kg/m³.
