Common rebar sizes at a glance
Most small concrete projects use #3, #4, or #5 rebar. Larger sizes are common in footings, walls, beams, columns, and engineered foundations.
Jump to a rebar chart section
Interactive rebar dimension chart
Filter the table by size, unit system, and project type. Select any row to update the live rebar diagram and report data.
| Rebar size | Metric approx. | Diameter | Area | Weight | Common use | Related tool |
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Rebar size chart
This crawlable rebar size chart lists each common bar size with diameter, area, and weight. Use it as a fast reference before opening a calculator.
| Size | Diameter in | Diameter mm | Area sq in | Weight lb/ft | Weight kg/m | Common use |
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Rebar thickness chart
Compare two bar sizes by diameter, area, and weight. This helps explain why a small increase in bar size can change weight and steel area a lot.
Rebar gauge chart
People often search for a rebar gauge chart, but rebar is normally named by bar number, not by wire gauge. The number gives a simple size reference, such as #4 or #5.
| Search term | Better term | Typical meaning | What to check |
|---|---|---|---|
| Rebar gauge | Rebar size | Bar number, such as #3, #4, or #5 | Diameter and weight |
| Rebar thickness | Nominal diameter | How thick the bar is across the round section | Diameter in inches or mm |
| Rebar chart | Rebar dimension chart | Full reference table for size, area, and weight | Size, area, weight, and use |
Rebar bending chart
Use this bending preview as a planning guide. Final hook and bend rules should be checked against the project code, bar grade, and engineer notes.
Rebar overlap chart
Estimate lap overlap from bar diameter using a 40d, 50d, or 60d rule. This is not a structural design approval.
Rebar price chart
Rebar prices change by size, location, supplier, and market conditions. Enter a local price to build a quick cost reference by foot, stick, and ton.
How to use the rebar dimension chart by project type
Rebar size for concrete slabs
#3 and #4 rebar are common starting points for slabs, but the final choice depends on slab thickness, load, spacing, and soil support. For slab volume, use the Concrete Slab Calculator. For bar count and spacing, use the Rebar Calculator.
Rebar size for driveways
Driveways often use #4 or larger rebar where reinforcement is needed. Load, slab thickness, and joint layout matter. Start with the Concrete Driveway Calculator, then check reinforcement with the Concrete Rebar Calculator.
Rebar size for footings
Footings often need larger bars and more detailed spacing rules. Use the Concrete Footing Calculator for concrete volume and the Rebar Weight Calculator for steel weight.
Rebar size for walls, beams, columns, and foundations
Structural members need project-specific design. Use this chart for dimensions and weight only. Then open the matching tool: Concrete Wall Calculator, Concrete Beam Calculator, Concrete Column Calculator, or Concrete Foundation Calculator.
Rebar chart FAQs
#4 rebar has a nominal diameter of 0.500 in, area of 0.20 sq in, and weight of about 0.668 lb/ft.
#5 rebar has a nominal diameter of 0.625 in, or about 15.9 mm.
It depends on bar size. #4 rebar weighs about 0.668 lb/ft, #5 weighs about 1.043 lb/ft, and #6 weighs about 1.502 lb/ft.
It usually means a rebar size chart. Rebar is normally named by bar number instead of wire gauge.
A simple estimating range is 40 to 60 bar diameters. Final overlap should follow drawings, code, and engineer direction.
Yes. Larger bars weigh more per foot and usually cost more per stick. Price also changes by region and supplier.
Use this chart as an estimating reference
This page is for reference and planning. It does not replace local code, structural drawings, supplier data, or engineering review. Always verify rebar size, grade, bend, lap splice, spacing, and cover before construction.