How much does #4 rebar weigh per foot?
#4 rebar weighs 0.668 pounds per foot (0.994 kg per metre). A standard 20 foot stick weighs 13.4 pounds.
How to work it out
- #4 (½ in, metric #13): 0.668 lb/ft
- 20 ft × 1 = 20 ft × 0.668 lb/ft = 13.4 lb
#4 bar is ½ inch in nominal diameter and goes by #13 in metric. It is the bar most often found in house footings, slabs and block walls, so its weight comes up whenever you plan a delivery or a car-top haul.
Adjust for your project
- Weight per foot
- 0.668 lb/ft
- Nominal diameter
- 0.5 in
- Cross-section area
- 0.2 sq in
- Total length
- 20 ft
#4 rebar by number of 20 ft sticks
| Number of bars | Total weight | Total length |
|---|---|---|
| 1 | 13.4 lb | 20 ft |
| 5 | 66.8 lb | 100 ft |
| 10 | 133.6 lb | 200 ft |
| 25 | 334 lb | 500 ft |
| 50 | 668 lb | 1,000 ft |
| 100 | 1,336 lb | 2,000 ft |
Weights for common #4 orders
| Quantity of #4 | Total length | Weight |
|---|---|---|
| 1 stick, 10 ft | 10 ft | 6.7 lb |
| 1 stick, 20 ft | 20 ft | 13.4 lb |
| 10 sticks, 20 ft | 200 ft | 134 lb |
| 28 sticks (20×20 slab, 18 in grid) | 560 ft | 374 lb |
| 50 sticks, 20 ft | 1,000 ft | 668 lb |
Its cross-section is 0.20 sq in, which is what engineers use when they size reinforcement. The ribs (deformations) make the bar look a little fatter than ½ in; measure over them and you will read slightly more.
Handling #4 bar
At 13.4 lb, a 20 ft stick is light but long and springy; carry it near its middle and watch the ends. A manual cutter-bender handles #4 comfortably, as does a grinder with a cut-off wheel. For a whole slab, see how much rebar for a 20×20 slab; for the next size up, how much does #5 rebar weigh per foot.
Different size? Use the full Rebar Weight Calculator.
What you’ll need
- 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) - 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)
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Frequently asked questions
How much do ten 20 ft sticks of #4 rebar weigh?
133.6 pounds, 200 feet of bar at 0.668 pounds per foot.
How much does a 10 ft piece of #4 rebar weigh?
6.7 pounds.
Other common sizes
- How much does #5 rebar weigh per foot — 1.043 lb per foot (20.9 lb per 20 ft stick)
- How much does #3 rebar weigh per foot — 0.376 lb per foot (7.5 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.