Z is the number of formula units in the unit cell. Use the value for the crystal structure being calculated.

What unit should I use for lattice parameter?

Enter the cubic lattice parameter a in angstrom. The calculator converts unit-cell volume to cm3 internally.

Does this include porosity or defects?

No. The output is theoretical crystal density from ideal unit-cell geometry and composition.

ToolsConductScience tool

DensityFree in-browser calculator

Theoretical Density Calculator.

Calculate theoretical density for cubic crystals from lattice parameter, Z, and molar mass. For materials research, education, and protocol documentation only. Not a certified inspection, compliance, asset-integrity, or final acceptance tool.

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Validated2026-05-24

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Try it out

Load example theoretical density data to see the full workflow

Cubic unit-cell inputs

Lattice parameter a

Formula units Z

Molar mass

g/mol

Results

Density

2.16362 g/cm3

Density

2163.62 kg/m3

Unit-cell volume

179.406 A3

5.64

179.406

2.164

Methods note

Uses density = Z * molar mass / (Avogadro constant * unit-cell volume). P1 supports cubic a^3 volume.

Scope and limitations

For materials research, education, and protocol documentation only. Not a certified inspection, compliance, asset-integrity, or final acceptance tool.

Results are deterministic calculations from the values entered here. Review units, assumptions, and measurement quality before using outputs in reports or protocols.

Method

Uses the tool-specific formulas and assumptions shown in the calculator output.

Validated

Last validated 2026-05-24. Calculations are designed for planning and documentation support; verify procurement decisions against manufacturer specifications or institutional SOPs.

How to cite

How to Cite

Theoretical Density Calculator (1.2.0). ConductScience, Inc. 2026. Available at: https://conductscience.com/tools/theoretical-density-calculator

For materials research, education, and protocol documentation only. Not a certified inspection, compliance, asset-integrity, or final acceptance tool.

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