Authoritative definitions of the International System of Units and SI prefixes.
Unit converters
Density converter
Convert density units including kg/m³, g/cm³, kg/L, lb/ft³, lb/gal. See the formula, conversion tables and examples for your selected units.
DensityInstant result
Decimals
Formula result = input × 1 ÷ 1000. 1 kg/m³ = 0.001 g/cm³
Nonzero results too small for the selected decimal places use scientific notation.
Nonzero results too small for the selected decimal places use scientific notation.
Common examples
One value, several units
Grams per cubic centimetre0.001 g/cm³
Kilograms per litre0.001 kg/L
Pounds per cubic foot0.0624 lb/ft³
Pounds per US gallon0.0083 lb/gal
Conversion table
| kg/m³ | g/cm³ |
|---|---|
| 1 kg/m³ | 0.001 g/cm³ |
| 2 kg/m³ | 0.002 g/cm³ |
| 5 kg/m³ | 0.005 g/cm³ |
| 10 kg/m³ | 0.01 g/cm³ |
| 25 kg/m³ | 0.025 g/cm³ |
| 50 kg/m³ | 0.05 g/cm³ |
| 100 kg/m³ | 0.1 g/cm³ |
Conversion chart
1 kg/m³0.001 g/cm³
5 kg/m³0.005 g/cm³
10 kg/m³0.01 g/cm³
25 kg/m³0.025 g/cm³
50 kg/m³0.05 g/cm³
Worked example
1 kg/m³ = 0.001 g/cm³. Apply the selected conversion formula to other input values.
Unit definition
Kilograms per cubic metre (kg/m³) One kilograms per cubic metre equals 1 kilogram per cubic metre.
Unit history
Kilograms per cubic metre is represented here using its modern SI definition or an internationally accepted relationship to an SI base unit.
Step by step
1. Parse the value, including fractions.
2. Convert kg/m³ to kilogram per cubic metre.
3. Convert the base value to g/cm³ and apply your display precision.
Understand the result before using it
Density expresses mass per volume in another compatible density unit. The numerical value changes because the size and definition of the selected unit changes; the underlying quantity does not.
Calculated result
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.
Formula, assumptions, and example
Formula
result = input × 1 ÷ 1000
Assumptions
- The source and target selections represent the same physical quantity or supported notation.
- The entered value is valid for the selected relationship and uses the source unit shown.
- Published unit definitions and conventional conversion factors apply under their stated conditions.
Worked example
Water is approximately 1,000 kg/m³.
When to use it
Good uses
- Translate a density value found in a document, specification, recipe, or measurement.
- Compare values reported in different unit systems.
- Check a manual conversion and control the displayed precision.
Limitations
Common mistakes to avoid
- A material's density can change with temperature, pressure, composition, and moisture content.
- Do not add meaningful digits beyond the precision of the original measurement.
- Confirm regulated, safety-critical, laboratory, and contractual values against the controlling standard.
Sources and further reading
These references explain the underlying standards or provide authoritative context. Your own contract, institution, clinician, product documentation, local code, or governing standard may be the controlling source.
Guidance on unit names, symbols, conversions, and numerical presentation.
Questions about this calculation
What does the Density converter do?
Density expresses mass per volume in another compatible density unit. It does not change the physical quantity represented by the input.
What formula does the Density converter use?
result = input × 1 ÷ 1000
Why can a Density converter result be rounded?
UnitMora calculates with JavaScript double-precision numbers, then formats the result using your selected decimal or significant-figure setting. The unrounded value may contain more digits than are displayed.
What is the most common density conversion mistake?
A material's density can change with temperature, pressure, composition, and moisture content.
Density conversion tables
Open a unit pair for its formula, worked example and reference table.
- Kilograms per cubic metre to Grams per cubic centimetre
- Grams per cubic centimetre to Kilograms per cubic metre
- Kilograms per cubic metre to Kilograms per litre
- Kilograms per litre to Kilograms per cubic metre
- Kilograms per cubic metre to Pounds per cubic foot
- Pounds per cubic foot to Kilograms per cubic metre
- Kilograms per cubic metre to Pounds per US gallon
- Pounds per US gallon to Kilograms per cubic metre
Clear answers, without the guesswork
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