Quote and buying checks
Get a quick weight figure before material is ordered, priced, or added into a quote check.
Free Fabora tool
Steel weight calculator for practical trade checks.
Use this free Fabora tool to calculate steel weights for plate, bar, tube, box section, SHS, and angle work. Enter sizes in mm or inches and view the result in kg or lb.
Shapes coveredPlate, bar, tube, RHS, SHS, and angle
Unitsmm or inches in, kg or lb out
Built forEstimating, buying, workshop, and planning checks
Free Fabora tool
Steel weight calculator
Built for the quick questions around plate blanks, bar sizes, hollow sections, and buying or estimating checks.
- Eight common steel shape options
- mm and inches supported
- kg and lb outputs
Use note
For planning and estimating
This is a practical trade calculator. It is not positioned as engineering sign-off, certification, or final design approval.
Fabora RAMS remains the main live Fabora product. Free tools like this support the wider steelwork workflow around it.
Use the tool
Check weight per piece and total weight
Choose the shape, set the units, enter the size, and calculate. The result shows weight per piece, total weight, quantity, selected units, and the density basis used for the estimate.
Inputs
Enter the section and size
Results
Ready when your size is entered
Choose the section, enter the dimensions, set the quantity, and calculate to see weight per piece, total weight, and the practical section basis behind the result.
What it helps with
A quick way to turn section size into a useful weight figure
Steelwork teams often need a fast number for quoting, ordering, workshop planning, or checking if a piece feels sensible before it goes any further. This tool keeps that job simple.
Useful for
Weight checks
Quick per-piece or total checks before buying, cutting, or quoting.
Practical planning
Helpful where the job needs a realistic number, not a full catalogue system.
Plate and section coverage in one tool
Use one calculator for plate, flat bar, round bar, square bar, tube, RHS, SHS, and angle sections.
Practical unit handling
Enter sizes in mm or inches and view the result in kg or lb without rebuilding the job on a spreadsheet.
Where it fits
Made for the everyday trade questions around the job
The Fabora version is intentionally lighter than an internal materials system. It focuses on the weight calculation itself and leaves out stock libraries, saved catalogues, and internal app overhead.
Fabrication workshops
Useful for quick material checks around blanks, cut pieces, stock planning, and workshop conversations before work starts.
Buyers and estimators
Helpful when a section weight is needed quickly for pricing, comparing options, or sense-checking supplier information.
Steelwork office and ops staff
A good fit where day-to-day planning needs a practical number fast without opening a larger internal system.
Tool FAQ
Short answers on formulas, units, and practical use
These are the main points people usually want to check before they rely on a quick trade calculator for a live job.
Keep moving
Need more practical tools or wider job documentation workflows? Fabora also has the full Fabora RAMS product and a growing Resources section for steelwork teams.
How is steel weight calculated?
This calculator works from section size and a standard mild/carbon steel density assumption of 7850 kg/m3. It uses practical steelwork formulas for plate, bar, tube, RHS, SHS, and angle sections, then applies the entered piece length and quantity.
Can I use inches instead of mm?
Yes. You can enter dimensions in mm or inches. The calculator normalises the values internally and keeps the result consistent when you switch units.
Can I view results in kg or lb?
Yes. Results can be shown in kilograms or pounds, which helps if suppliers, drawings, or customer conversations are using different unit preferences.
Is this exact for every steel grade?
No. It uses a practical standard steel density for mild/carbon steel. Actual weight can vary slightly by grade, manufacturing tolerances, and the form of the section.
Is this useful for fabrication quoting and planning?
Yes. It is aimed at estimating, buying, workshop planning, and quick commercial checks. It is not positioned as engineering sign-off or final design approval.