How much does #3 rebar weigh per foot?
#3 rebar weighs 0.376 pounds per foot (0.560 kg per metre), so a 20 foot stick weighs 7.5 pounds.
How to work it out
- #3 (⅜ in, metric #10): 0.376 lb/ft
- 20 ft × 1 = 20 ft × 0.376 lb/ft = 7.5 lb
#3 is the smallest standard deformed bar: ⅜ inch nominal, metric #10. It turns up in light slabs and walks, as ties and stirrups, and wherever plans call for a light grid.
Adjust for your project
- Weight per foot
- 0.376 lb/ft
- Nominal diameter
- 0.375 in
- Cross-section area
- 0.11 sq in
- Total length
- 20 ft
#3 rebar by number of 20 ft sticks
| Number of bars | Total weight | Total length |
|---|---|---|
| 1 | 7.5 lb | 20 ft |
| 5 | 37.6 lb | 100 ft |
| 10 | 75.2 lb | 200 ft |
| 25 | 188 lb | 500 ft |
| 50 | 376 lb | 1,000 ft |
| 100 | 752 lb | 2,000 ft |
The light bar
At 0.376 lb/ft, #3 has a bit over half the steel of #4 (0.11 sq in of area against 0.20). That makes it easy to handle and bend by hand, but it is not interchangeable with a heavier bar: substituting sizes changes the reinforcement, and that is a decision for your plans or engineer.
| Quantity of #3 | Weight |
|---|---|
| 1 stick, 20 ft | 7.5 lb |
| 25 sticks | 188 lb |
| 100 sticks | 752 lb |
Working with #3
#3 bends easily with a hand bender or even a length of pipe for gentle curves, which is why it is used for ties and curved work. Tie it firmly at every crossing — light bar gets pushed around by boots and wheelbarrows during a pour. Compare the heavier sizes on how much does #4 rebar weigh per foot and how much does #5 rebar weigh per foot.
Different size? Use the full Rebar Weight Calculator.
What you’ll need
- Rebar tie wire and twisterBudget price
Ties bars together where they cross so the grid stays put while you pour.
See options on Amazon (opens in a new tab) - Rebar cutter and benderMid-range price
Cuts and bends #3–#5 bar by hand. For a few cuts, a grinder or reciprocating saw with the right blade also works.
See options on Amazon (opens in a new tab)
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Frequently asked questions
How much do 100 sticks of #3 rebar weigh?
752 pounds for 100 sticks of 20 feet.
How much does a 10 ft piece of #3 rebar weigh?
3.8 pounds.
Other common sizes
- How much does #4 rebar weigh per foot — 0.668 lb per foot (13.4 lb per 20 ft stick)
- How much does #5 rebar weigh per foot — 1.043 lb per foot (20.9 lb per 20 ft stick)
Sources
- Caltrans Bridge Design Details 13.1 — Table 13.1.1, ASTM standard reinforcing bar data (opens in a new tab) — Bar sizes #3–#18 with nominal diameter, area and weight per foot (ASTM A615).
- Continental Steel — Straight rebar chart (opens in a new tab) — Soft-metric bar designations (#3 = #10, #4 = #13 …) and kg per metre.
- Continental Steel — #4 reinforcing bar product page (opens in a new tab) — 0.668 lb/ft; stock lengths of 20, 30, 40 and 60 ft.