Strip Ratio Calculator
Computes the waste-to-ore strip ratio for open-pit mining from overburden and ore volumes.
Enter Values
Before you rely on this: First-pass guide only. Verify safety-critical or regulated work against the relevant standards, your project requirements and a qualified professional.
How to use this calculator
- Enter the waste removed and the ore mined (same units).
- Press Calculate.
- Read the strip ratio.
How it works
Strip ratio = waste ÷ ore. A 3:1 ratio means three units of waste are moved per unit of ore.
Worked example
30,000 waste, 10,000 ore. Strip ratio 3:1.
Frequently asked questions
Tonnes or BCM?
Either — just use the same unit for waste and ore. Tonne-based and volume-based ratios both appear in mine planning.
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Cite this tool
Zerdly. (2026). Strip Ratio Calculator. Retrieved from https://www.zerdly.com/tools/strip-ratio-calculator/
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.