BlastwiseDesign a blast and know what it costs before you drill.
Blastwise turns a bench pattern into powder factor, tonnes broken and cost per tonne in seconds, then lets you add timing and watch the blast fire. No spreadsheet. No sign-up.
Runs in your browser. Nothing you enter is uploaded.
See cost per tonne as you type
Change burden, spacing or stemming and watch powder factor and cost per tonne move.
Catch weak patterns early
Design checks flag short stemming, a stiff pattern, a burden far from the Konya estimate, or delays and detonator scatter that put holes out of sequence.
Take it to the bench
Works on a phone. Copy a plain summary into WhatsApp or email for your manager or blasting engineer.
Blast calculator
An example blast is filled in. Change any number, or load one of the examples.
Plan view
Hole section
Drawn to scale along the hole axis. Lengths are measured along the hole.
Timing and simulation
Set the delays on the left, then press Play to watch the holes fire in order. Hole colour in the plan view shows firing time: amber first, blue last.
Hole by hole timing
Click a hole in the picture (double-click it to start the blast there), or type its row and hole number. Row 1 is nearest the free face and hole 1 is the left-hand hole. A time you set is the hole's firing time from the start of the blast. Free to try; saving a design with hand-set times is part of Pro.
Per hole
Whole blast
Design checks
Blast summary
Saved designs
Name the design above, then save it to come back to it on this device.
No saved designs yet. Saved patterns will list here with their powder factor.
Blastwise Pro
Keep every bench you design. Pay monthly, cancel any time.
Pay by card in South African rand. The yearly plan costs about 17% less than twelve monthly payments.
- Unlimited saved designs (Free keeps 3)
- Save designs with your own start point and hole-by-hole times
- Download any design as a CSV file
- Compare two designs side by side
Unlock Pro on this device
Paste the license key from your receipt email.
Free plan
Get Blastwise on your phone
Install it from this page. It opens like an app, with its own icon, and the calculator keeps working with no signal.
Android
- Open this page in Chrome.
- Tap the three dots at the top right.
- Tap Install app or Add to Home screen.
iPhone and iPad
- Open this page in Safari.
- Tap the Share button.
- Tap Add to Home Screen, then Add.
Your saved designs stay on the phone you install it on.
Questions
Is my data uploaded?
No. Designs you enter and save stay in your browser on this device. Clearing your browser data removes them, so download a CSV of anything you need to keep.
Does this replace the blasting engineer?
No. Blastwise is a planning aid built on common rules of thumb. The site blast design, the blasting engineer's sign-off and your mine's code of practice still apply.
How do I get Pro?
Pay at checkout, then paste the license key from your receipt email into the unlock box above. It works on that device straight away.
Can I cancel?
Yes, at any time. Pro access ends when the period you paid for ends.
Which units and currency does it use?
Metric units. Costs are shown in rand per kilogram, per metre and per hole, and you can type your own rates.