ANFO Loading Density Calculator
Computes ANFO charge per metre from hole diameter and explosive loading density.
Enter Values
Minimum 0
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 hole diameter.
- Optionally set the explosive density (defaults to ANFO at 0.8 g/cm³).
- Press Calculate for the loading density.
How it works
Charge per metre of a fully-coupled hole = (π/4 × diameter²) × explosive density. It tells you the kg of explosive per metre of column.
Worked example
115 mm hole, ANFO. ≈ 8.3 kg/m.
Frequently asked questions
What density should I use?
ANFO is ~0.8 g/cm³; emulsions and heavy ANFO are higher (1.1–1.3). Use the product's actual density.
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Cite this tool
Zerdly. (2026). ANFO Loading Density Calculator. Retrieved from https://www.zerdly.com/tools/anfo-bulk-density-calculator/
Tip: Enter any known values to calculate the remaining results.
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