Converted values (from {from})
| Unit | Value |
|---|
Density Converter
Use this density converter to switch between material-density units used in engineering specs, lab reports, and process documentation. Convert kg/m³, g/cm³, lb/ft³, and related formats with explicit unit labels so values stay comparable across sources. This tool is part of Converters and keeps unit conventions explicit for copy-ready results.
Convert density units.
Your feedback matters
Density Links Mass and Volume
Density describes how much mass is contained in a given volume. It is a material property that is recorded across different unit conventions. Converting density units keeps the same value consistent across specs, datasets, and calculations. You will often see metric and imperial density units side by side, especially g/cm³ vs kg/m³ and lb/ft³ vs kg/m³.
Use Density Without Mixing Definitions
Density is not the same as mass or weight, and it is not a simple label on a container. It is a ratio with units, and it becomes useful when you need to compute mass from a volume or volume from a mass. Be careful with sources that mix mass density with weight density (force per volume), because unit conversion does not fix a definition mismatch. Clear conversion helps when a density value is copied between datasets, spreadsheets, and specs that use different unit conventions. This is where searches like kg/m³ to lb/ft³, g/cm³ to kg/m³, and density unit conversion usually appear.
Specific Gravity, Bulk Values, and Stated Conditions
Some sources use specific gravity, which is unitless and relative to a reference. Others report density with explicit units, which is what conversion tools operate on. For powders and granules, bulk density may be reported instead of solid material density, so the definition should be stated in the spec. For many materials, especially gases and some liquids, density can vary with temperature and pressure, so keep the stated conditions alongside the number. For gases, it is also common to see density reported at STP or a stated reference condition - treat that as part of the value.
Density Usually Appears with Mass and Volume Work
Density conversions often pair with Mass converters and Volume converters, because density is the value you use when moving between a mass amount and a volume amount for the same material.
Step-by-Step Density Conversion Examples
Example 1: Convert 1.2 g/cm³ to kg/m³
This is a common material-datasheet conversion from lab-style units to SI engineering units.
Given
$$\rho = 1.2\,g/cm^3$$
Step-by-step
$$1\,g/cm^3 = 1000\,kg/m^3$$ $$\rho = 1.2 \times 1000 = 1200\,kg/m^3$$
Result
$$1.2\,g/cm^3 = 1200\,kg/m^3$$
Example 2: Convert 62.4 lb/ft³ to kg/m³
Imperial-to-metric density conversion is common when comparing US and SI specifications.
Given
$$\rho = 62.4\,lb/ft^3$$
Step-by-step
$$1\,lb/ft^3 = 16.01846337\,kg/m^3$$ $$\rho = 62.4 \times 16.01846337 = 999.552\,kg/m^3$$
Result
$$62.4\,lb/ft^3 \approx 999.552\,kg/m^3$$
Example 3: Convert 7850 kg/m³ to g/cm³
This is typical when moving a structural-material value from SI specs to lab-style units.
Given
$$\rho = 7850\,kg/m^3$$
Step-by-step
$$1\,kg/m^3 = 0.001\,g/cm^3$$ $$\rho = 7850 \times 0.001 = 7.85\,g/cm^3$$
Result
$$7850\,kg/m^3 = 7.85\,g/cm^3$$
Missing a Density Conversion?
If you work with a density unit or reporting convention that is not currently supported, you can request it and help expand the UtilityKits converter library. If possible, mention the units you see in your source data and the units you need for output.
Suggest a New ConverterQuestions About Density Conversions
Practical answers for converting density units and using density correctly in calculations.
A density converter shows the same density value in another unit, so material properties stay consistent across specs, datasets, and calculations.
Multiply by 1000. The relation is $1\,g/cm^3 = 1000\,kg/m^3$, so a value in g/cm3 converts to kg/m3 with that factor.
Density links mass and volume. If you know density, you can compute mass from a volume or volume from a mass. Without a density value, mass and volume cannot be converted into each other.
Density is a measurement with units. Specific gravity is a ratio relative to a reference and is unitless. They are related but not interchangeable without context.
They can. Many materials, especially gases and some liquids, vary with temperature and pressure. If a value is given at a reference condition such as STP, keep that condition with the number.
Bulk density is measured for a packed material that includes air gaps, common with powders and granules. It can differ from the solid material density, so the definition used should be stated in the spec.
Use enough precision to keep calculations and specs consistent. For display, fewer decimals may be fine, but avoid rounding that changes the value meaningfully for your use case.