--- title: "Steel Calculators — Weight, Hardness & Welding" description: "Weight, hardness and welding calculators for steel ✅ the selected grade’s published density 📐 each states its formula, source and valid range." canonical: https://steelequivalents.com/calculators language: en robots: index, follow og_type: website type: calculators-index language_alternates: en: https://steelequivalents.com/calculators.md cs: https://steelequivalents.com/cs/kalkulačky.md de: https://steelequivalents.com/de/rechner.md es: https://steelequivalents.com/es/calculadoras.md fr: https://steelequivalents.com/fr/calculateurs.md hu: https://steelequivalents.com/hu/kalkulátorok.md it: https://steelequivalents.com/it/calcolatori.md nl: https://steelequivalents.com/nl/calculators.md pl: https://steelequivalents.com/pl/kalkulatory.md pt: https://steelequivalents.com/pt/calculadoras.md ru: https://steelequivalents.com/ru/калькуляторы.md tr: https://steelequivalents.com/tr/hesaplayıcılar.md zh: https://steelequivalents.com/zh/计算器.md ja: https://steelequivalents.com/ja/計算ツール.md ar: https://steelequivalents.com/ar/حاسبات.md ko: https://steelequivalents.com/ko/계산기.md pt-br: https://steelequivalents.com/pt-br/calculadoras.md hi: https://steelequivalents.com/hi/कैलकुलेटर.md content_hash: sha256:6d0e174507c54c1aea1ae7917f298b8dd4fc7c30ae5a25dcbfb84e03a96b1314 generated: 2026-09-22 --- > **Machine-readable Markdown rendering.** This is a Markdown representation of a web page, > served for AI agents and crawlers as a token-efficient alternative to the full HTML. > Full interactive HTML version: https://steelequivalents.com/calculators > Canonical URL: https://steelequivalents.com/calculators > Available languages: en, cs, de, es, fr, hu, it, nl, pl, pt, ru, tr, zh, ja, ar, ko, pt-br, hi > Change detection: `content_hash` is the SHA-256 of this document's Markdown body — everything > below this block, whitespace-trimmed, excluding the front-matter. Compare it to detect a real > content change; `generated` moves on every render and is not a change signal. Free · No login · Instant results # Steel calculators, built for the shop floor Weight, unit conversion and welding calculators — every tool on Steel Equivalents shares the same fast, sourced, print-ready frame. Pick a tool below. - **17** Calculators - **6,600** materials - **28,825** designations [All](#calculators-index) [Weight](#group-weight) [Conversion](#group-conversion) [Welding](#group-welding) [Forming & machining](#group-fabrication) ## Weight 6 calculators [![Round Bar Weight](/images/uploads/1ad2dde4-2b9a-4679-88e9-2215817ae63e/round-bar-weight-calculator-bar-stock-rack-1920x1080.jpg) Popular ### Round Bar Weight Weight of round steel bars per piece and per metre.](/calculators/round-bar-weight "Round Bar Weight — Popular")[![Flat / Sheet / Plate & Square Bar](/images/uploads/6d8dada0-ce42-43d6-8535-a29ebf48fb6e/flat-bar-weight-calculator-plate-and-square-bar-stack-1920x1080.jpg) ### Flat / Sheet / Plate & Square Bar Weight of flat bar, sheet, plate and square-section bar.](/calculators/flat-bar-weight "Flat / Sheet / Plate & Square Bar — ")[![Tube & Ring Weight](/images/uploads/5e6db151-1ae3-4c72-912f-cedbc02ac51b/tube-weight-calculator-tube-bundle-end-on-1920x1080.jpg) ### Tube & Ring Weight OD/ID or OD/wall-thickness — weight of tube and ring stock.](/calculators/tube-weight "Tube & Ring Weight — ")[![Hexagon Bar Weight](/images/uploads/53485b1c-46f5-41a9-8a0b-62f4d43d0bfd/hexagon-bar-weight-calculator-hex-bar-ends-1920x1080.jpg) ### Hexagon Bar Weight Weight of hex-section bar from across-flats and length.](/calculators/hexagon-bar-weight "Hexagon Bar Weight — ")[![Rebar Weight](/images/uploads/631379c4-bff7-480e-9dc0-c76b6c22d9e3/rebar-weight-calculator-ribbed-reinforcing-bar-bundle-1920x1080.jpg) ### Rebar Weight Nominal mass per metre for standard reinforcement bar sizes.](/calculators/rebar-weight "Rebar Weight — ")[![Coil Weight](/images/uploads/a508d5d9-384d-4e8f-b2d9-5e3db461a7f6/coil-weight-calculator-slit-steel-coil-eye-1920x1080.jpg) ### Coil Weight Weight and remaining length of steel coil from OD, ID and width.](/calculators/coil-weight "Coil Weight — ") ## Conversion 4 calculators [![Hardness Converter](/images/uploads/d56ca3d0-194e-429f-b189-5c911d8d79b2/hardness-converter-calculator-diamond-indenter-polished-mount-1920x1080.jpg) ### Hardness Converter HB / HRC / HV / Rm — lookup table per material class (ASTM A370 / ISO 18265), refused outside its stated range, never a universal formula.](/calculators/hardness-converter "Hardness Converter — ")[![Sheet Gauge / mm](/images/uploads/5c0fdf0c-6783-4bac-af63-20771aa0bce3/sheet-gauge-calculator-feeler-gauge-blades-over-sheet-1920x1080.jpg) ### Sheet Gauge / mm Standard gauge number to millimetre thickness, by sheet type.](/calculators/sheet-gauge "Sheet Gauge / mm — ")[![MPa / ksi & J / ft·lbf](/images/uploads/9a816a71-0d26-477e-9305-30259e9cd52e/unit-converter-calculator-tensile-specimen-fracture-face-1920x1080.jpg) ### MPa / ksi & J / ft·lbf Stress and impact-energy unit conversion for mill certificates.](/calculators/unit-converter "MPa / ksi & J / ft·lbf — ")Coming soon ### Thermal Expansion Length change from the coefficient you enter, the original length and ΔT. ## Welding 4 calculators [![Carbon Equivalent (CEV / CET / Pcm)](/images/uploads/36e5d7c0-7baf-480a-b7c0-9c9d09c4324d/carbon-equivalent-calculator-weld-cross-section-macro-1920x1080.jpg) ### Carbon Equivalent (CEV / CET / Pcm) Weldability from chemical composition, three standard formulas.](/calculators/carbon-equivalent "Carbon Equivalent (CEV / CET / Pcm) — ")[![Preheat Temperature](/images/uploads/b3c35113-666e-40db-a8dd-b341cf312ce2/preheat-temperature-calculator-plate-at-dull-heat-1920x1080.jpg) ### Preheat Temperature Minimum preheat per EN 1011-2, from CET, thickness and hydrogen scale.](/calculators/preheat-temperature "Preheat Temperature — ")[![PREN](/images/uploads/aa1ba796-e7bd-4a07-9824-0498a15af4a9/pren-calculator-pitting-corrosion-duplex-stainless-1920x1080.jpg) ### PREN Pitting resistance equivalent number for stainless grades.](/calculators/pren "PREN — ")[![Chromium & Nickel Equivalent (WRC-1992)](/images/uploads/c5d5cd8f-04fa-4ff9-992d-daa8ca9dbde3/chromium-nickel-equivalent-calculator-etched-weld-microstructure-1920x1080.jpg) ### Chromium & Nickel Equivalent (WRC-1992) Cr-eq and Ni-eq for weld metal — the two WRC-1992 diagram coordinates.](/calculators/chromium-nickel-equivalent "Chromium & Nickel Equivalent (WRC-1992) — ") ## Forming & machining 3 calculators Coming soon ### Press Brake Tonnage Air-bend force in a standard V-die, from Rm, thickness, length and die opening. Coming soon ### Bend Allowance Flat pattern from the K-factor: bend allowance, deduction and outside setback. Coming soon ### Speeds and Feeds Spindle speed and feed rate from your own cutting data — we publish none. 01 · SOURCEDEvery formula ships with its standard or textbook source — EN 10025-1, EN 1011-2, ISO 18265. No guessed constants. 02 · RANGE-CHECKEDInputs outside a formula's valid range are refused, never silently extrapolated or clamped. 03 · WORKS OFFLINE-FIRSTEvery calculator is a real form. It computes correctly with JavaScript switched off; JS only adds live recompute. ## Calculator hub — frequently asked Are these calculators free to use? Yes — every calculator on this page is free, with no account or login required. How accurate are the results? Each calculator uses standard engineering formulas with published source references, and the weight calculators use each grade's own measured density rather than a generic constant. Results are for estimation — for critical structural work, always verify against certified mill data. Can I use these on mobile, on site? Yes — every calculator is fully responsive and works without an internet connection once the page has loaded.