Acreage and Cubic Yard Calculator
Unhinged Geology LLC
Acreage and cubic yards calculator
Convert between acres, average depth, and cubic yards.
Project inputs
Calculation inputs
Switch direction depending on the quantity you already know.
Enter surface area in acres.
Depth is measured in feet.
Depth examples
Use measured boundaries and representative average depth when possible. This tool assumes a uniform depth across the selected area.
Tonnage and Cubic Yard Calculator
Unhinged Geology LLC
Tons and cubic yards calculator
Convert between material weight and cubic yards using a user-defined specific gravity.
Project inputs
Calculation inputs
Switch direction depending on the field quantity you already know.
Use short tons for U.S. field work or metric tonnes for resource workflows.
Uses U.S. short tons: 1 ton = 2,000 lb.
Specific gravity is density compared with water.
Specific gravity examples
Use project-specific density data when available. Defaults are examples only and should not replace measured bulk density or verified specific gravity.
Placer Gold Recovery Calculator
Unhinged Geology LLC
Placer gold recovery calculator
Estimate contained gold, recoverable gold, revenue, operating cost, and margin.
Project inputs
Recovery inputs
Use bank or processed yards consistently.
Use oz/yd^3 for placer sampling or g/tonne for tonne-based data.
Gold ounces per cubic yard.
Used only when grade is entered as g/tonne.
Recovery percentage after processing losses.
USD per troy ounce.
USD per cubic yard.
Optional mobilization, permitting, setup, or overhead cost.
Recovery examples
Use project-specific values where available. Default values are examples and should not replace field sampling, metallurgical recovery tests, or current operating quotes.