Rock Density Calculator

Summary

Enter a rock sample's mass and volume to calculate its bulk density, then compare against a reference table of common rock and mineral densities.

How it works

1. Enter the mass of your rock sample and choose a unit (g or kg).
2. Enter the volume of the sample and choose a unit (cm³, mL, or m³).
3. Click Calculate — the tool applies the formula density = mass ÷ volume.
4. The result is displayed in g/cm³ (the standard geological unit) and kg/m³.
5. A color-coded match indicator shows which rock types fall closest to your result.
6. Scroll the reference table to compare your result against common rock densities.

Use cases

• Geology fieldwork: quickly verify whether a hand sample matches expected density ranges.
• Classroom labs: teach density concepts with real mineral samples.
• Mining & exploration: assess rock type from core drill samples.
• Petrography: cross-check calculated density against mineral composition.
• Civil engineering: estimate unit weight of rock for foundation design.
• Hobbyist rockhounds: identify unknown mineral specimens.

Frequently Asked Questions