Which crystal system is supported?

This roadmap version supports cubic crystals first.

What if h, k, and l are all zero?

The zero plane is invalid and the calculator will reject it.

How does this relate to XRD?

The d-spacing can be used with Bragg law to connect hkl planes to diffraction angles.

ToolsConductScience tool

Miller IndicesFree in-browser calculator

Miller Indices d-Spacing Calculator.

Calculate cubic d-spacing from h, k, l and lattice parameter a. 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

CitableMethods and citation included

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Try it out

Load example miller d-spacing data to see the full workflow

Miller d-Spacing inputs

Lattice parameter a

Results

d-spacing

3.25626 A

Reciprocal spacing

0.3071 1/A

5.64

3.256

Review notes

This version supports cubic d-spacing only.

Methods note

For cubic crystals, d = a / sqrt(h^2 + k^2 + l^2).

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

Miller Indices d-Spacing Calculator (1.2.0). ConductScience, Inc. 2026. Available at: https://conductscience.com/tools/miller-indices-d-spacing-calculator

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

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