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.

Dry mass

Oven-dry mass of solids in kilograms.

Water mass

Mass of pore water in kilograms.

Compute gravimetric water content as the mass of pore water divided by the oven-dry solids mass, in percent. 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]

Water content

Gravimetric water content expressed in percent of dry mass.

• 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.

• Shrinkage Limit Calculator

  Compute the shrinkage limit SL in percent from the initial water content (percent), wet and dry pat volumes (cm3), oven-dry mass (g) and water density (g/cm3).

• 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.

• Dry Density Calculator

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