W21X55 Dimensions & Weight
W21X55 is an AISC wide-flange (W) shape with a cross-section area of 16.16 in², weighing 55 lb per foot — a size that shows up in general building framing.
W21X55 Dimensions
| Property | Imperial | Metric |
|---|---|---|
| Cross-section area (A)computed from weight and steel density | 16.16 in² | 104.3 cm² |
| Weight | 55 lb/ft | 81.8 kg/m |
What does W21X55 weigh and cost?
W21X55 weighs 55 lb per foot. At an example material price of $0.92/lb that is about $50.60 per foot. Set your quantity, length, and price to total your own run:
Material only, example pricing. Actual steel pricing varies by region, grade, quantity, and market conditions — use your own supplier numbers for real bids.
Pricing more than one size? Build a full member list in the free calculator →
Stop counting W21X55s by hand.
Upload your drawing set and SteelFlo puts a box on every steel label it finds — every W21X55, on every page — ready to review and export as a bill of materials.
Related sizes
Deeper reading: Wide-Flange Beam Sizes: The Complete Guide · How to calculate steel weight