Round Bar Weight Calculator.
Calculate round bar weight from diameter, length and material density.
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
Round bar weight
3.85kg
Estimated round bar weight.
Weight per metre
3.85kg/m
Estimated linear weight.
Explanation
What this calculates
Diameter is converted from millimetres to metres before calculating circular section area.
Formula
Area = pi x diameter2 / 4; weight = area x density x length
Inputs are validated on screen and converted where unit options are available.
Worked Example
Example result
A 6 m length of 25 mm round bar weighs about 23.13 kg.
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Templates
Document the result
Software
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Learn before you act.
More related articles are planned for this section.
Calculator questions.
Can this estimate rebar?
Yes for simple weight checks, although the rebar calculator is better for bar spacing and grid quantities.
Does this include cut waste?
No. Add waste and stock-length allowances separately.
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.