Block Calculator.
Estimate block quantity from wall area, blocks per square metre and waste.
Connected to Zektrx
Use this result as a planning estimate, then create controlled Zektrx records for tasks, templates, evidence, actions, pricing and delivery.
Instant Results
Blocks required
550blocks
Rounded block quantity including waste.
Net blocks
500blocks
Block quantity before waste.
Explanation
What this calculates
Use net wall area and a block rate that matches the selected block size and joint assumptions.
Formula
Blocks = wall area x blocks per m2 x (1 + waste %)
Inputs are validated on screen and converted where unit options are available.
Worked Example
Example result
50 m2 at 10 blocks/m2 with 10% waste needs 550 blocks.
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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 include mortar?
No. Estimate mortar separately using supplier rates or your estimator's norms.
Should I include waste?
Yes. Cutting, breakage and site handling usually need an allowance.
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.