Use this geological calculation for a transparent first-pass interpretation of measured rock, soil, fluid, well, stratigraphic, isotopic, geophysical, or seismic data under an explicitly selected model.

Solids volume

Volume of solid particles in cubic meters.

Void volume

Volume of void space in cubic meters.

Compute the soil or rock void ratio e = Vv / Vs from the volumes of voids and solid particles. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Void ratio

Void ratio (dimensionless).

• Geotechnical correlations and idealized failure models depend on stratigraphy, sampling disturbance, drainage, stress history, groundwater, density, anisotropy, scale, construction sequence, and laboratory or field method. Site-specific design requires investigation and code factors.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Compare independent measurements and models, retain units and analytical metadata, propagate uncertainty, and validate interpretations against logs, cores, maps, laboratory data, or field observations.

• Specific Gravity Calculator

  Compute the specific gravity of soil or rock solids as the ratio of particle density to water density.

• Buoyant Density Calculator

  Compute the buoyant (submerged) density of a saturated soil or rock as saturated density minus water density.

• Porosity From Bulk Density Calculator

  Compute porosity as n = 1 - (bulk density / grain density) for a rock or soil sample.