Bolt Quantity Calculator.
Calculate bolt counts for repeated rows, plates, brackets and connection schedules.
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Use this result as a planning estimate, then create controlled Zektrx records for tasks, templates, evidence, actions, pricing and delivery.
Instant Results
Bolts required
317bolts
Rounded bolt count including waste.
Net bolts
288bolts
Bolt count before waste.
Explanation
What this calculates
The calculator multiplies a connection pattern by repeats and rounds up the waste-adjusted total.
Formula
Bolts = rows x columns x repeat connections x (1 + waste %)
Inputs are validated on screen and converted where unit options are available.
Worked Example
Example result
A 4 x 6 bolt pattern repeated 12 times with 10% waste needs 317 bolts.
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Templates
Document the result
Software
Turn it into a workflow
Learn before you act.
More related articles are planned for this section.
Calculator questions.
Does this check bolt design?
No. Structural bolt design must be checked by competent designers.
Should nuts and washers be included?
Use the bolt count as the base for associated nuts, washers and spares.
Next Step
Make estimates part of the job record.
Zektrx connects calculators, templates, articles, evidence, actions, pricing and free trial routes so one-off estimates can become repeatable contractor workflows.