Calculate total linear feet and weight of rebar needed for concrete slabs, footings, columns, and retaining walls.
🔩 Rebar Calculator
Total Linear Feet
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Total Weight (lbs)
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Est. Cost ($0.55/ft)
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💡 Pro Tip
Tie rebar intersections with wire ties. Hand-tying is slower but keeps the grid from shifting during the pour. Pre-tied mats are available for simple rectangular pours.
Frequently Asked Questions
Q: How much rebar do I need for a concrete slab?
Standard residential slabs use #4 rebar (1/2 inch) in a 12-inch on-center grid pattern. For a 10x10 slab: you need 10 bars each direction = 20 bars × 10 ft = 200 linear feet total.
Q: What size rebar should I use for a driveway?
Use #4 (1/2 inch) rebar at 18 inches on center for a standard residential driveway. For heavy vehicle loads, use #5 (5/8 inch) rebar at 12 inches on center.
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