W12X45 Dimensions & Weight
W12X45 is an AISC wide-flange (W) shape with an actual depth of 12.06 in and a 8.05 in wide flange, weighing 45 lb per foot — a common size for light floor framing, mezzanines, and residential beams.
W12X45 Dimensions
| Property | Imperial | Metric |
|---|---|---|
| Depth (d) | 12.06 in | 306.3 mm |
| Flange width (bf) | 8.05 in | 204.3 mm |
| Cross-section area (A) | 13.2 in² | 85.2 cm² |
| Weight | 45 lb/ft | 67 kg/m |
What does W12X45 weigh and cost?
W12X45 weighs 45 lb per foot. At an example material price of $0.92/lb that is about $41.40 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.
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Related sizes
Deeper reading: Wide-Flange Beam Sizes: The Complete Guide · How to calculate steel weight