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.

Saturated density

Saturated bulk density in kg/m3.

Water density

Water density in kg/m3 (default 1000).

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

Buoyant density

Buoyant (submerged) density in kg/m3.

• 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.

• Porosity From Bulk Density Calculator

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

• Shrinkage Ratio Calculator

  Compute soil shrinkage ratio as oven-dry density divided by water density, and shrinkage limit from the mass and volume lost while drying.