Geology, Geotechnical & Ground Engineering Calculators

Soils, rock, slope, bearing capacity and ground-engineering tools.

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Elements to Oxide CalculatorConvert elemental assay results to oxide percentages for geology and geotechnical reporting,…

Soil Porosity CalculatorCalculate soil porosity and void ratio from bulk density and particle density using this free…

Core Recovery CalculatorTotal Core Recovery (TCR) is the length of core actually retrieved divided by the length the…

RQD CalculatorRock Quality Designation (RQD) is a modified core-recovery percentage introduced by Deere…

All Geology, Geotechnical & Ground Engineering Calculators (71)

Guide to Geology Calculators

This hub gathers the day-to-day calculations that geotechnical engineers, engineering geologists, core loggers and slope-monitoring crews reach for on the drill pad, in the lab and back in the office.

Core logging & rock-mass classification

Start with recovery and RQD from your run lengths, add fracture frequency and discontinuity spacing, then feed those into a rating scheme — RMR or the Q-system worksheet — with GSI and point-load/strength conversions for the intact rock.

Core Recovery Calculator RQD Calculator Solid Core Recovery Calculator Fracture Frequency Calculator RMR Worksheet Calculator Q System Worksheet Calculator GSI Helper Point Load Index Converter

Soil index & lab properties

Use these to turn tin weights and jar samples into the phase relationships that drive everything downstream — moisture, densities, void ratio and saturation — plus Atterberg limits and compaction percent for classification and earthworks QA.

Moisture Content Calculator Dry Density Calculator Bulk Density Calculator Void Ratio Calculator Degree of Saturation Calculator Atterberg Limits Calculator Compaction Percent Calculator Soil Specific Gravity Calculator

Foundations, bearing & settlement

Terzaghi and strip/pad footing tools size shallow bearing pressure; the pile calculator handles deep foundations; and for how much it will move, pick consolidation settlement, compression index or the Cv rate depending on whether you need magnitude or time.

Bearing Capacity (Terzaghi) Calculator Strip Footing Bearing Capacity Calculator Pad Footing Bearing Pressure Calculator Pile Capacity Calculator (end bearing + skin friction)Settlement (Consolidation) Calculator Compression Index Calculator Consolidation Coefficient (Cv) Calculator SPT N-Value to Relative Density Calculator

Groundwater, seepage & pore pressure

Convert head readings to hydraulic gradient and seepage flow, estimate permeability from a falling-head test or coefficient, and track pore pressure, its ratio and piezometric level when effective stress and stability are the concern.

Hydraulic Gradient Calculator Seepage Flow Calculator Permeability from Falling Head Test Calculator Permeability Coefficient Calculator Pore Pressure Calculator Pore Pressure Ratio Calculator Piezometric Level Calculator Groundwater Drawdown Estimator

Slope geometry & stability

Split the job: geometry tools set batter ratio, bench height, berm and overall angle, while the kinematic screens and factor-of-safety/tension-crack tools test whether that geometry actually stands up in the given discontinuity set.

Batter Ratio Calculator Bench Face Height Calculator Berm Width Calculator Overall Slope Angle Calculator Plane Failure Kinematic Screen Wedge Failure Kinematic Screen Saturated Slope FoS Calculator Tension Crack Depth Calculator

Slope monitoring & TARP triggers

For operating pits and walls, convert prism and radar readings into movement rate, cumulative and rolling-average trends, then check them against TARP thresholds alongside rainfall and piezometer triggers.

Prism Movement Rate Calculator Cumulative Movement Calculator Rolling Average Movement Calculator Radar Prism Displacement Comparison Tool Prism Movement TARP Checker Rainfall Trigger Checker Piezometer Trend Calculator Crack Displacement Calculator

Important calculation notice

These calculators are intended for education, estimation and preliminary checks. Verify all inputs, units, assumptions, material properties and applicable standards. Safety-critical or final engineering designs should be checked by a suitably qualified professional.

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Geology, Geotechnical & Ground Engineering Calculators

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All Geology, Geotechnical & Ground Engineering Calculators (71)

Soil Mechanics & Foundations23 calculators

Slope Stability & Kinematics12 calculators

Ground Monitoring & TARP8 calculators

Core Logging, Rock Mass & Exploration20 calculators

Groundwater & Seepage8 calculators

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