What units can I use for Vickers hardness?

Enter load in kgf, gf, or N and diagonals in mm or um. The calculator converts load to kgf and diagonals to mm.

Why does diagonal asymmetry matter?

Large differences between the two measured diagonals may indicate a measurement issue, poor surface preparation, or an irregular indent.

Are hardness conversions included?

P0 reports HV and approximate pressure equivalents. Scale-to-scale hardness conversions are material-dependent and are not included.

ToolsConductScience tool

HVFree in-browser calculator

Vickers Hardness Calculator.

Calculate HV from test load and two diagonal measurements, with warnings for asymmetric indents. 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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Load example Vickers hardness data to see the full workflow

Indentation inputs

Load

kgf

Load unitDiagonal 1

Diagonal 2

Diagonal unit

Results

90.893

Average diagonal

0.101 mm

Approx. pressure

0.89136 GPa

Approx. pressure

891.36 MPa

Review notes

Hardness scale conversions are approximate and material-dependent.

Methods note

Uses HV = 1.8544 * F / d^2, with F in kgf and d as the average diagonal in mm.

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

Vickers Hardness Calculator (1.2.0). ConductScience, Inc. 2026. Available at: https://conductscience.com/tools/vickers-hardness-calculator

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

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