W21X83 Dimensions & Weight
W21X83 is an AISC wide-flange (W) shape with an actual depth of 21.43 in and a 8.36 in wide flange, weighing 83 lb per foot — a size you will see on longer floor spans and transfer framing.
W21X83 Dimensions
| Property | Imperial | Metric |
|---|---|---|
| Depth (d) | 21.43 in | 544.3 mm |
| Flange width (bf) | 8.36 in | 212.3 mm |
| Cross-section area (A) | 24.3 in² | 156.8 cm² |
| Weight | 83 lb/ft | 123.5 kg/m |
What does W21X83 cost?
At an example material price of $0.92/lb, W21X83 runs about $76.36 per foot, or roughly $1,527 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 W21X83s off a drawing set by hand? SteelFlo finds every steel label on your PDF automatically — 3 takeoffs free.
Related sizes
Deeper reading: Wide-Flange Beam Sizes: The Complete Guide · How to calculate steel weight