Quote and buying checks
Get a quick weight figure before material is ordered, priced, or added into a quote check.
Free Fabora tool
Free Steel Weight Calculator (UK) for Plate, Box Section, Bar, Tube and Beams
Use this free Fabora tool to choose Mild Steel, SS304, SS316, or Aluminium, then either run a quick single-item check or build a small BOM / cut list. Pick common stocked sections from dropdowns or enter custom plate sizes manually, then view the results in kg or lb.
ModesQuick item and BOM / cut list
MaterialsMild steel, SS304, SS316, and aluminium
Shapes coveredPlate, bar, tube, RHS, SHS, angle, and mild steel rolled sections
UnitsManual plate in mm or inches, kg or lb out
Free Fabora tool
Steel weight calculator
Built for the quick questions around mild steel, stainless, and aluminium plate blanks, merchant bars, hollow sections, and common mild steel rolled beam families.
- Quick item mode and multi-row BOM mode
- Material dropdown for mild steel, SS304, SS316, and aluminium
- Section dropdowns for common stocked sizes
- Manual plate entry plus 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
Switch between a quick single-item check and a multi-row BOM / cut list. In quick mode, choose the material first, then the shape, pick the stocked section where it applies, and enter the cut length and quantity. In BOM mode, add multiple rows, calculate grouped material totals, then print, share, or copy the summary. Plates stay manual in either mode.
Calculator mode
Choose a quick check or a cut list
Quick item
Choose the material, section and cut length
Results
Ready when the material and section are set
Choose the material first, then pick a stocked section from the library or enter a custom plate size. Set the cut length and quantity to see weight per piece, weight per metre, and total weight.
What it helps with
A quick way to turn section size into a useful weight figure
Fabrication teams often need a fast number for quoting, ordering, workshop planning, or checking if a section weight feels sensible before it goes any further. This tool keeps that job simple for both one-off checks and small cut list totals, without copying an internal materials app.
Useful for
Weight checks
Quick per-piece or total checks before buying, cutting, lifting, or quoting.
Practical planning
Helpful where the job needs a realistic number, not a full catalogue browser.
Quick item or small BOM mode
Use the fast single-item flow for a one-off section check, or switch to BOM / cut list mode to total multiple rows for buying or estimating work.
Material options for common trade use
Switch between mild steel, SS304, SS316, and aluminium without changing the simple calculator flow.
Library-first for standard sections
Use prebuilt dropdowns for bars, round tube, RHS, SHS, angle, and mild steel structural section families instead of typing the cross-section every time.
Flexible where plate work needs it
Keep manual plate and sheet entry for custom blanks, with mm or inches for custom dimensions and kg or lb for output.
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, reuses only the useful section families and formulas, and leaves out saved catalogues, stock control, 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.
Structural steel buyers
Useful for quick UB, UC, PFC, and IPE section checks where a rolled mild steel section weight is needed fast for buying or planning.
Steel weight guidance
Steel weight calculator UK support for plates, box sections, RHS, SHS and beams
Use this section to understand where the calculator fits in practical steelwork planning. It supports plates, bars, tube, RHS, SHS, angle and mild steel structural section families, but the result should still be checked before live commercial, lifting, transport, fabrication or structural decisions.
Steel weight calculator for UK fabricators
Use the calculator for quick trade checks around material buying, estimating, workshop planning, stock conversations and small cut lists. It is aimed at UK fabricators, buyers, estimators, workshop managers and steel erectors who need a practical weight figure fast.
Steel plate weight calculator
For plate and sheet work, enter the length, width, thickness and quantity manually. This is useful for blanks, gussets, base plates, stiffeners, covers and one-off fabricated parts where a stocked section dropdown is not the right fit.
Box section, RHS and SHS weight calculator
For box section work, choose RHS or SHS from the section library, then enter length and quantity. This helps with frames, posts, rails, supports, guards, platforms and general fabrication checks.
Steel beam, UB and UC weight calculator
For mild steel rolled sections, choose from structural section families such as UB, UC, PFC and IPE. Use the result as a quick planning estimate, then check supplier data and competent input where the decision is structural or safety-critical.
Stainless steel and aluminium weight calculator
Switch the material to SS304, SS316 or aluminium to estimate the weight of stainless steel and aluminium plate and sections, using practical density values for each material rather than mild steel.
When steel weight estimates are useful
Weight estimates can help with quotes, rough material costs, handling conversations, loading plans, transport sense-checks, cut list totals and early RAMS preparation. They are a starting point for review, not an approval route.
What calculator results should and should not be used for
Calculator outputs are estimates and should be checked before ordering, lifting, transport, fabrication or structural decisions. Actual weight can vary by grade, tolerance and section form. For structural, lifting-critical, transport-critical or safety-critical decisions, use competent review.
Related tools and guides
Keep weight checks connected to the wider job
If you are using steel weights for job planning, site work or RAMS preparation, Fabora RAMS helps create editable job-specific RAMS faster. Final review and approval stay with the business.
Calculator outputs are estimates. Actual weight can vary by grade, tolerance and section form. For structural, lifting-critical, transport-critical or safety-critical decisions, use competent review.
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 weight calculated?
This calculator works from section size and the selected material density. Plate uses manual dimensions, common bars and hollow sections use practical section formulas, and the mild steel structural families use reused prebuilt kg/m data before the entered length and quantity are applied.
Can I use inches instead of mm?
Yes, for manual plate and sheet entry. Standard section dropdowns stay in normal metric trade labels, which is usually the cleaner option for UK-first fabrication and buying work.
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.
Can I total a small BOM or cut list?
Yes. Alongside the quick single-item mode, the tool also includes a BOM / cut list mode for multiple rows, grouped material totals, and a grand total. It is aimed at practical estimating, buying, and planning checks rather than saved job management.
Can I choose stainless or aluminium?
Yes. This version supports Mild Steel, SS304, SS316, and Aluminium. Mild steel keeps the widest section library, while stainless and aluminium stay limited to the shapes clearly backed by the reused JMB source coverage. Rolled structural families stay as mild steel only in this pass.
Is this exact for every material and grade?
No. It uses practical density assumptions for each supported material. Actual weight can vary slightly by grade, alloy, temper, 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.