W21X275 Dimensions & Weight

W21X275 is an AISC wide-flange (W) shape with a cross-section area of 80.82 in², weighing 275 lb per foot — a heavy section you will mostly see in columns and transfer girders on larger structures. It is the heaviest of the 21 W21 sizes listed here.

W21X275 Dimensions

Property	Imperial	Metric
Cross-section area (A)computed from weight and steel density	80.82 in²	521.4 cm²
Weight	275 lb/ft	409.2 kg/m

What does W21X275 cost?

At an example material price of $0.92/lb, W21X275 runs about $253 per foot, or roughly $5,060 for a 20-ft length.

Example pricing only. Actual steel pricing varies by region, grade, quantity, and market conditions — use your own supplier numbers for real bids.

Counting W21X275s off a drawing set by hand? SteelFlo finds every steel label on your PDF automatically — 3 takeoffs free.

Related sizes

W21X4444 lb/ft
W21X4848 lb/ft
W21X5050 lb/ft
W21X5555 lb/ft
W21X5757 lb/ft
W21X6262 lb/ft
W21X6868 lb/ft
W21X7373 lb/ft

Deeper reading: Wide-Flange Beam Sizes: The Complete Guide · How to calculate steel weight