⚖️ Density Conversion Calculator
Convert density values for fluids, gases, and solids across engineering units.
Use this tool when switching between lab measurements (g/cm³), process engineering specs (kg/m³), and building codes (lb/ft³).
Supports decimals. Negative values represent relative density deficits.
1 Grams per Cubic Centimeter (g/cm³) equals
1,000 Kilograms per Cubic Meter (kg/m³)
Other Units
Grams per Cubic Centimeter (g/cm³)
1
Pounds per Cubic Foot (lb/ft³)
62.428
Pounds per Cubic Inch (lb/in³)
0.036127
How to Use This Calculator
Enter the density
Input a measured or specified density value. Use decimals for high precision lab data.
Pick the source and target units
Switch between g/cm³, kg/m³, lb/ft³, and lb/in³ depending on your industry or standard.
Apply the conversions
Use the main conversion and side-by-side references in design calculations or QA logs.
Formula
kg/m³ = g/cm³ × 1000
lb/ft³ ≈ kg/m³ ÷ 16.018463
lb/in³ ≈ kg/m³ ÷ 27,679.9047
All conversions route through kilograms per cubic meter, the SI base density unit.
Use the formula breakdown to confirm the calculation logic or perform the conversion manually if needed.
Full Description
Density tables vary by region and discipline. Process engineers often use kg/m³, chemists prefer g/cm³, while builders rely on lb/ft³. This calculator ensures you can translate between them without juggling spreadsheets or memorizing conversion factors.
Conversions flow through SI units to prevent cumulative rounding. If you need additional units (like slugs/ft³ or specific gravity), extend the unit list in the source code to match your workflow.
Use the converter for fluid property lookups, material substitution checks, or preparing equipment documentation that spans international standards.
Frequently Asked Questions
Does it support specific gravity?
Specific gravity is unitless and equals density ÷ 1000 kg/m³ (at 4°C water reference). Add it as a unit if you need it frequently.
Can I convert gas densities?
Yes. Enter the density values as provided. Remember that gas density depends strongly on temperature and pressure.
Why are there only four units?
These cover the most common engineering scenarios. You can expand the DENSITY_UNITS map to include others like g/L or lb/gal.
Will negative density cause errors?
Negative values are mathematically accepted but physically unusual. The converter still processes them for modeling differences or offset calculations.