RHS Weight Calculator.
Estimate rectangular hollow section weight from outside dimensions, wall thickness and length.
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
RHS weight
22.42kg
Estimated total RHS weight.
Weight per metre
22.42kg/m
Estimated linear weight.
Explanation
What this calculates
Wall thickness is deducted from each side to estimate the hollow internal area.
Formula
Area = outside rectangle - inside void; 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 150 x 100 x 6 mm RHS weighs about 136.45 kg.
Learn, use, then automate.
1. Learn
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3. Automate
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4. Start
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Keep learning
Audit Action Backlog Calculator
A construction calculator for estimating the size, urgency and admin pressure of open audit and inspection actions.
Compliance Admin Cost Calculator
A construction calculator for estimating the weekly cost of chasing RAMS, permits, training, audits and evidence.
Construction KPI Dashboard Starter Guide
A starter guide for contractor KPI dashboards covering safety, compliance, quality, programme, cost and action measures.
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Run the numbers
SHS Weight Calculator
Estimate square hollow section weight using side size, wall thickness and length.
Angle Iron Weight Calculator
Estimate equal angle steel weight from leg size, thickness and length.
CHS Weight Calculator
Estimate circular hollow section weight from diameter, wall thickness and length.
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Automate the workflow
Fabrication Management Software
Connect fabrication jobs, materials, drawings, QA and site install evidence.
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Organise structural steel evidence, quality records and EN1090-related workflows.
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Related FAQs
Does this include corner radii?
No. It is an estimating calculation. Manufacturer section tables should be used for final procurement.
From SHS Weight Calculator
Can I use this for RHS?
Use the RHS calculator when width and depth are different.
From SHS Weight Calculator
Does this include root radius?
No. Use supplier section tables for final weights.
From Angle Iron Weight Calculator
Can I estimate unequal angle?
Use the material quantity result as a check only; this calculator assumes equal angle.
From Angle Iron Weight Calculator
Calculator questions.
Should I round up material orders?
Yes. Allow for offcuts, cut lengths, fabrication waste and supplier stock lengths.
Is the result suitable for lifting plans?
Use it as an estimate only. Confirm actual weights before preparing lift plans.
Next Step
Manage steel projects in Zektrx.
Connect RAMS, drawings, fabrication records, site evidence, materials and handover around one steel workflow.