Earth & Geology Math Center
Density, deposits, terrain gradients, erosion volumes and geological rate models. 20 tools with purposes, formulas and worked examples.
Simple mode uses starting defaults for extra scenario controls. Advanced exposes those controls where available. Change an entry, then press Calculate.
Complete truth table
Formula, calculation steps & example
All 20 tools: purposes and formulas
- Rock density — Use the labeled measurements to calculate rock density.
A ÷ B (A, B, C refer to the labeled entries)
- Rock mass from density — Use the labeled measurements to calculate rock mass from density.
A × B (A, B, C refer to the labeled entries)
- Rock volume from mass — Use the labeled measurements to calculate rock volume from mass.
A ÷ B (A, B, C refer to the labeled entries)
- Rectangular stratum volume — Use the labeled measurements to calculate rectangular stratum volume.
A × B × C (A, B, C refer to the labeled entries)
- Deposit bulk mass — Use the labeled measurements to calculate deposit bulk mass.
A × B (A, B, C refer to the labeled entries)
- Ore component mass percentage — Use the labeled measurements to calculate ore component mass percentage.
A ÷ B × 100 (A, B, C refer to the labeled entries)
- Contained material mass — Use the labeled measurements to calculate contained material mass.
A × B (A, B, C refer to the labeled entries)
- Recovered material assumption — Use the labeled measurements to calculate recovered material assumption.
A × B (A, B, C refer to the labeled entries)
- Pore volume percentage — Use the labeled measurements to calculate pore volume percentage.
A ÷ B × 100 (A, B, C refer to the labeled entries)
- Void volume — Use the labeled measurements to calculate void volume.
A × B (A, B, C refer to the labeled entries)
- Terrain gradient percentage — Use the labeled measurements to calculate terrain gradient percentage.
A ÷ B × 100 (A, B, C refer to the labeled entries)
- Elevation relief — Use the labeled measurements to calculate elevation relief.
A − B (A, B, C refer to the labeled entries)
- Sediment accumulation rate — Use the labeled measurements to calculate sediment accumulation rate.
A ÷ B (A, B, C refer to the labeled entries)
- Time from thickness and constant rate — Use the labeled measurements to calculate time from thickness and constant rate.
A ÷ B (A, B, C refer to the labeled entries)
- Uniform erosion volume — Use the labeled measurements to calculate uniform erosion volume.
A × B (A, B, C refer to the labeled entries)
- Volume erosion rate — Use the labeled measurements to calculate volume erosion rate.
A ÷ B (A, B, C refer to the labeled entries)
- Cylindrical sample volume — Use the labeled measurements to calculate cylindrical sample volume.
π × A² × B (A, B, C refer to the labeled entries)
- Core bulk density — Use the labeled measurements to calculate core bulk density.
A ÷ B (A, B, C refer to the labeled entries)
- Gravimetric soil moisture — Use the labeled measurements to calculate gravimetric soil moisture.
A ÷ B × 100 (A, B, C refer to the labeled entries)
- Soil layer volume — Use the labeled measurements to calculate soil layer volume.
A × B (A, B, C refer to the labeled entries)
Definitions and source references
Unit definitions and selected model references:
- Virginia Tech: wing geometry and mean aerodynamic chord
- Aircraft Design course: tail volume definitions
- Prusa: filament and printer calculation references
- NIST: SI defining constants
- NASA: aerodynamic lift models
- Horizon Hobby: product and battery documentation
- Smithsonian: Maya calendar units
- NIST: frequency intervals and cents
- NIST: binary prefixes
- NOAA: nautical miles and knots
- RFC 3021: IPv4 /31 point-to-point links
- MDN: exact integer arithmetic
- NIST: international-foot unit conversions
- NASA/JPL: astronomical unit definitions
- NASA: ideal rocket equation
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