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.

Specific gravity

Specific gravity of the solid particles (dimensionless).

Void ratio

Void ratio of the soil or rock (dimensionless).

Water density

Water density in kg/m3 (default 1000).

Compute the saturated bulk density from specific gravity and void ratio using rho_sat = (Gs + e) / (1 + e) * rho_w. 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]

Saturated density

Saturated bulk 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.

• Cement Slurry Density Calculator

  Compute neat cement slurry density and yield per tonne of dry cement from the water/cement mass ratio and cement specific gravity.

• Specific Gravity Calculator

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

• Dry Density Calculator

  Compute dry density from wet (bulk) density and gravimetric water content using rho_d = rho / (1 + w).