Engineering calculators
12 tools for quantities, welding and coatings. Calculations run on the SteelNomic server engine with validated inputs; each page lists its formulas, assumptions, references and engine version.
Steel Section Weight & Properties
Mass, area, painting surface and section properties for IPE, HEA, HEB, HEM sections or a custom welded I-section.
Open calculatorCHS & Pipe Weight
Mass, area, external and internal surface, and section properties of circular hollow sections and pipe.
Open calculatorRHS & SHS Weight
Mass, area, painting surface and properties of square and rectangular hollow sections, with the correct corner radii for hot-finished or cold-formed tubes.
Open calculatorSteel Plate & Flat Bar Weight
Mass and painting surface of rectangular plates, base plates, stiffeners and flat bar, with deduction for bolt holes.
Open calculatorFillet Weld Metal & Consumables
Throat, leg, deposited weld metal and consumable estimate for continuous or intermittent fillet welds, equal or unequal legs.
Open calculatorButt Weld Metal & Consumables
Groove area, reinforcement, deposited metal and consumables for square, V, X, bevel and K butt-weld preparations, with an automatic single-V vs double-V comparison.
Open calculatorCorrosion Protection Selector
Classify the environment to an ISO 12944 corrosivity category, see how fast unprotected steel corrodes there, and get the specification checklist for the durability you need.
Open calculatorEmbodied Carbon Estimator
Screen the cradle-to-gate (A1-A3) carbon of a steel package and compare two supply routes or EPDs, per tonne and per m² of floor area.
Open calculatorContract Cash Flow & S-Curve
Monthly valuations, invoices, receipts and costs for a contract from your own terms: advance, retention, payment delay and supplier credit. Shows the peak funding need and when the job turns cash-positive.
Open calculatorPrice Escalation (Adjustment Formula)
Apply the standard contract price-adjustment formula to a valuation using your coefficients and published cost indices, with each element’s contribution.
Open calculatorMargin, Markup & Break-Even
Convert between margin and markup without the classic mistake, price from cost, and find the break-even turnover that covers your fixed overheads.
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