ToolnozaENGINEERING TOOL
Drill & Blast Calculator — Drilling Quantities
Calculate drilled metres, surveyed rock tonnage, productive drilling hours and specific drilling from measured production data.
Drill & Blast Calculator — Drilling Quantities
FREE ONLINE TOOLSTEP BY STEP
How to use drill & blast calculator — drilling quantities
- Enter actual hole count and average complete drilled length.
- Enter surveyed rock volume, density and net productive drilling rate.
- Read tonnes, metres, productive hours and equivalent shifts.
WHEN IT HELPS
Common uses
- Summarise drilling quantities for a production report.
- Calculate metres drilled per tonne and productive time for one rig.
IN PRACTICE
Example
20 holes of 10 m give 200 drilled metres. A surveyed volume of 1,000 m³ at 2.7 t/m³ gives 2,700 tonnes.
GOOD TO KNOW
Does this calculator design a blast?
No. It calculates drilling and rock quantities for production reporting. It does not determine explosive charges, initiation or a blast design.
Uses measured inputs rather than recommending a drill pattern. In-situ volume × in-situ density gives tonnes. Excludes explosive charges, initiation and blast design.