Steel weight calculator
Look up the weight of a real AISC rolled shape, or calculate plate, round bar, or square/rect bar weight - for estimates, freight planning, and erection sequencing.
Formula & assumptions
Shape lookup: total_lb = weight_per_foot × length_ft × quantity. Weight-per-foot values are sourced from the AISC Shapes Database - 1,660 real designations (W, HP, S, M, C, MC, L, WT, MT, ST, HSS, Pipe), facts only, re-presented in our own format, not a copy of AISC's published tables. Plate mode: weight_lb = (t × w × l in³ ÷ 1728) × 490. Round bar: (π/4)d² × L × 0.2836. Square/rect bar: a × b × L × 0.2836. Plate/round/rect modes assume carbon steel density 490 lb/ft³ (0.2836 lb/in³) - a labeled assumption; stainless and aluminum differ. Nominal weights only - excludes connections, plates, bolts, and coatings.
Nominal reference only. Verify designation, dimensions, and properties against the official AISC Steel Construction Manual before fabrication/detailing. This tool is an estimating aid, not a design tool or shipping certification.