Powder Factor Calculator (kg per BCM)
A free, browser-based calculator. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserIntermediate
Enter Values
Enter your values and press Calculate to see results.
How to use this calculator
- Enter the total explosive mass and the volume blasted (BCM).
- Optionally add rock density for kg per tonne.
- Press Calculate.
How it works
Powder factor = explosive mass ÷ rock volume (kg/BCM). Typical surface values are ~0.2–0.6 kg/BCM depending on rock and the result required.
Worked example
5,000 kg over 25,000 BCM. 0.20 kg/BCM.
Frequently asked questions
kg/BCM or kg/tonne?
Both are used. Divide kg/BCM by the rock density (t/m³) to get kg/tonne.
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.