The Formula Behind the Calculator
Steel weighs 7.85 g/cm³, so weight per meter = cross-section area in cm² × 0.785. For a built-up H section (mm):
area ≈ (h − 2·tf) × tw + 2 × b × tf → kg/m = area × 0.00785
where h = depth, b = flange width, tw = web thickness, tf = flange thickness. For hot-rolled standard sizes, mills publish exact section areas — the table below uses those.
Standard Sizes: kg/m Quick Chart
Click any row to load it into the calculator:
| Size | kg/m | 12 m piece (kg) |
|---|
Full dimension tables (depth, flange width, thicknesses) live on our H beam size chart. Grade selection (A36, A572 Gr50, S355JR…) does not change weight — sections of the same size weigh the same in every grade.
Container Planning Cheat-Sheet
- 40ft container: ≈ 24–26 t of bundled beams
- 20ft container: ≈ 18–22 t
- Mixed sizes and even mixed products (beams + plates + pipes) can share one container — trial orders from 5 tons
FAQ
How do I calculate H beam weight?
kg/m = cross-section area (cm²) × 0.785. Or pick a standard size in the calculator above — standard values come from mill tables.
What does W12×26 weigh?
26 lb/ft ≈ 38.7 kg/m. In the ASTM W series the second number is lb/ft by definition (× 1.488 = kg/m).
Theoretical vs invoiced weight?
Invoices use actual weighed weight (±2–4% of theoretical typically). Fix the tolerance in your PI.
How much fits a container?
≈24–26 t in a 40ft, 18–22 t in a 20ft. We plan the loading mix for you with every quote.
Get Exact Weights & Prices
Send your size list — we reply with exact piece counts, weights and a CIF price within 24 hours. Every order ships with EN 10204 3.1 mill certificates and loading photos/videos.
Last updated: October 2026. Prices move weekly; weights are theoretical.