# I Beam Weight Calculator I beam weight calculator in pounds and kilograms. Get weight per foot, per meter, and total beam weight from depth, flange width, and web thickness. Matches AISC and MS i beam weight charts. ## What this calculates I-beam weight is the number one spec that ships with every structural steel order. This i beam weight calculator computes weight per foot, per meter, and total weight from the flange and web dimensions you can read off a drawing or shop ticket. Results match the AISC W-shape table and standard ms i beam weight calculator charts (IS 808 / ISMB) within a fraction of a pound per foot. ## Inputs - **Beam Depth (d)** (in) — min 0 — Overall depth from top flange to bottom flange (e.g., 10 for W10) - **Flange Width (bf)** (in) — min 0 — Width of the top and bottom flanges - **Flange Thickness (tf)** (in) — min 0 — Thickness of each flange (use manufacturer spec) - **Web Thickness (tw)** (in) — min 0 — Thickness of the web between flanges - **Beam Length** (ft) — min 0 — Total length of the I-beam - **Steel Type** — options: Carbon / mild steel (A36, 490 lb/ft³), Stainless steel (304/316, 501 lb/ft³) — MS I beam weight calculator uses carbon steel density by default ## Outputs - **Weight per Foot** (lbs/ft) — Standard industry quoting unit (W10x33 = 33 lb/ft) - **Weight per Meter** (kg/m) — Metric weight per meter of length - **Total Beam Weight** (lbs) - **Total Beam Weight** (kg) - **Cross-Section Area** (in²) — Area of the I-shape cross-section ## Details ## I Beam Weight Calculator in Pounds The I beam weight calculator in pounds uses the American standard 490 lb/ft³ density for carbon steel (A36, A992). Weight per foot is the industry quoting unit in North America. For example, a W10x33 is 33 lb/ft by name; the "33" comes from this exact calculation. ## I-Beam Weight per Foot and per Meter - **I-beam weight per foot** is measured in lb/ft. A W8x18 is 18 lb/ft. A W12x26 is 26 lb/ft. The second number in a W designation is always the weight per foot. - **I-beam weight per meter** is measured in kg/m. Convert by multiplying lb/ft by 1.4881 to get kg/m. So the W10x33 above is 49.1 kg/m. ## Common I Beam Weight Chart (AISC W-Shapes, Carbon Steel) | Size | Weight per Foot | Weight per Meter | Depth | Flange Width | |------|-----------------|------------------|-------|--------------| | W6x12 | 12 lb/ft | 17.9 kg/m | 6.03" | 4.00" | | W8x18 | 18 lb/ft | 26.8 kg/m | 8.14" | 5.25" | | W10x22 | 22 lb/ft | 32.7 kg/m | 10.17" | 5.75" | | W10x33 | 33 lb/ft | 49.1 kg/m | 9.73" | 7.96" | | W12x26 | 26 lb/ft | 38.7 kg/m | 12.22" | 6.49" | | W14x30 | 30 lb/ft | 44.6 kg/m | 13.84" | 6.73" | | W16x36 | 36 lb/ft | 53.6 kg/m | 15.86" | 6.99" | | W18x50 | 50 lb/ft | 74.4 kg/m | 17.99" | 7.50" | This i beam weight chart matches the AISC Manual 15th edition. For an i-beam weight chart in kg, multiply the per-foot value by 1.4881 and divide by 1 meter (shown in the kg/m column). An i-beam weight chart in kg pdf straight from mills or an i beam weight chart pdf is handy for procurement, but you can always back into the numbers from the formula below. ## Formula Behind the I-Beam Weight per Meter **Weight per foot = Cross-section area (in²) x 12 in/ft x 0.2836 lb/in³** Cross-section area = (2 x flange width x flange thickness) + (web height x web thickness) Where web height = overall depth - 2 x flange thickness. ## Example: W10x33 Verification - Depth d = 9.73 in, flange width bf = 7.96 in, flange thickness tf = 0.435 in, web thickness tw = 0.29 in - Web height = 9.73 - (2 x 0.435) = 8.86 in - Cross-section area = (2 x 7.96 x 0.435) + (8.86 x 0.29) = 6.92 + 2.57 = 9.49 in² - Weight per foot = 9.49 x 12 x 0.2836 = 32.3 lb/ft (AISC published value: 33 lb/ft, within 2% of the ideal section) ## 200x100 I Beam Weight (IS 808 / ISMB 200) A standard 200x100 i beam weight in India (ISMB 200) has flange width 100 mm, flange thickness 10.8 mm, web thickness 5.7 mm, depth 200 mm, and weighs about 25.4 kg/m or 17.1 lb/ft. Plug these into the calculator to verify. ## MS I Beam Weight Calculator This calculator works as an ms i beam weight calculator for Indian and British sections when you enter depth and flange dimensions in mm and switch to the mm/m units. The formula is the same regardless of regional naming. ## Steel I Beam Weight Chart in Kg PDF Commercial steel i beam weight chart in kg pdf documents come from Tata Steel, JSW, and SAIL. They list ISMB, ISJB, ISLB, and ISWB sections. This calculator reproduces those numbers within 2%, the same tolerance the mill uses. ## Frequently Asked Questions **Q: How do you calculate i-beam weight per foot?** A: I-beam weight per foot = cross-section area (in²) x 12 in/ft x 0.2836 lb/in³ for carbon steel. Cross-section area = 2 x flange width x flange thickness + (depth - 2 x flange thickness) x web thickness. For a W8x18: 5.25 x 0.33 x 2 + 7.48 x 0.23 = 5.19 in² x 12 x 0.2836 = 17.7 lb/ft (matches AISC 18 lb/ft). **Q: What is the i-beam weight per meter for a common size?** A: For a W10x22 (common residential header size), i-beam weight per meter is 32.7 kg/m. A W12x26 is 38.7 kg/m. Multiply the US lb/ft weight by 1.4881 to get kg/m. This calculator outputs both automatically. **Q: Does this i beam weight calculator in pounds work for all steel grades?** A: Yes, because density of structural steel is constant within 1% regardless of grade (A36, A992, A572). This i beam weight calculator in pounds uses 490 lb/ft³ for carbon/mild steel. Stainless steel (304/316) is 2-3% heavier at 501 lb/ft³, which the dropdown selects. **Q: Where can I find an i beam weight chart pdf?** A: AISC publishes a free W-shape profile table in the AISC Manual (15th edition). Steel mills including Nucor, Gerdau, and SSAB publish i beam weight chart pdf documents for their rolled sizes. In India, SAIL and Tata Steel publish steel i beam weight chart in kg pdf documents listing ISMB, ISJB, ISLB, and ISWB sections. **Q: What is the 200x100 i beam weight?** A: A 200x100 i beam weight (ISMB 200 per IS 808) is 25.4 kg/m or 17.1 lb/ft. Overall depth 200 mm, flange width 100 mm, flange thickness 10.8 mm, web thickness 5.7 mm. A 6-meter stick weighs 152.4 kg. **Q: Why is the calculated weight slightly different from the published i-beam weight chart value?** A: AISC and mill tables list nominal weights rounded to the nearest whole lb/ft. Actual rolled sections also include fillets at the web-to-flange junction that this calculator treats as sharp corners. The difference is under 2% and within rolling tolerance. For structural calcs, always use the nominal table value. --- Source: https://vastcalc.com/calculators/construction/i-beam-weight Category: Construction Last updated: 2026-04-08