Geological rock bulk density test calculator

Calculate displacement volume and bulk density with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use displacement volume and bulk density to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Dry sample mass (g)
100
Apparent submerged mass (g)
62
Water density (g/cm³)
0.9982
Displacement volume (cm³)
38.068523
Bulk density (g/cm³)
2.626842

Try another scenario

Dry sample mass (g)
110.00000000000001
Apparent submerged mass (g)
62
Water density (g/cm³)
0.9982
Displacement volume (cm³)
48.086556
Bulk density (g/cm³)
2.287542
Calculation method

Calculation method

Displacement volume (cm³)

(Dry−submerged mass)/water density, nonabsorbing sample assumption.

Bulk density (g/cm³)

Dry mass/displacement volume.

Symbols and units
a
Dry sample mass (g)
b
Apparent submerged mass (g)
c
Water density (g/cm³)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Dry-submerged masses, water density. Returns Bulk density under test assumptions. All coefficients and observations are user supplied; results describe only the stated mathematical model. Quantities are deterministic calculations from supplied observations and assumptions; no external data is fetched. Supported limits: Finite inputs only; numeric fields bounded as labelled. Lists and JSON records are limited to 256 entries unless a stricter tool bound is stated. No automatic design approval, legal conclusion, treatment recommendation or safety certification. Dry sample mass (g): minimum 1e-12, maximum 1000000000000.0. Apparent submerged mass (g): minimum 1e-12, maximum 1000000000000.0. Water density (g/cm³): minimum 1e-12, maximum 1000000000000.0.
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