Rock Density Calculator

Calculate bulk density, grain density, and porosity from dry, saturated, and submerged mass measurements.

Dry Mass (g)

Saturated Mass (g)

Submerged Mass (g)

Tab to move between fields

Bulk Density

2.381 g/cm³

Grain Density

2.632 g/cm³

Porosity

9.52%

Saturated Density2.476 g/cm³

Bulk Volume105 cm³

Pore Volume10 cm³

Water Absorption4%

How to Use This Calculator

Weigh the dry rock sample in grams and record the Dry Mass.
Saturate the sample and weigh again to get the Saturated Mass in grams.
Suspend the saturated sample in water and record the Submerged Mass using Archimedes' method.
Review Bulk Density, Grain Density, and Porosity percentage as the primary petrophysical outputs.
Check Water Absorption percentage to assess weathering susceptibility and engineering suitability.

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Formula

Bulk Density = Dry Mass / (Saturated Mass − Submerged Mass)

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