Can I paste pore areas instead of diameters?

Yes. In area mode the calculator converts each area to equivalent circular diameter using diameter = 2 * sqrt(area / pi).

What is equivalent circular diameter?

It is the diameter of a circle with the same area as the measured pore. Irregular pores may need additional shape metrics.

How is this different from porosity?

Porosity estimates area or volume fraction. Pore size distribution summarizes the individual pore-size measurements.

ToolsConductScience tool

Pore SizeFree in-browser calculator

Pore Size Distribution Calculator.

Paste pore diameters or pore areas to calculate D10, D50, D90, mean, variation, and equivalent diameters. 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

Calculator

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Try it out

Load example pore size data to see the full workflow

Pore measurements

Input modePore diameter list (um)

Results

D50

2.55 um

Mean

2.975 um

D10 / D90

1.41 / 5.13 um

53.71 %

1.2 um

1.4 um

1.5 um

1.8 um

2.1 um

2.4 um

2.7 um

3 um

3.8 um

#10

4.5 um

#11

5.2 um

#12

6.1 um

Review notes

Equivalent diameters assume circular pore geometry when area mode is used.

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

Pore Size Distribution Calculator (1.2.0). ConductScience, Inc. 2026. Available at: https://conductscience.com/tools/pore-size-distribution-calculator

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

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