#10 rebar weight
4.303 lb/ft · 6.404 kg/m
#10 rebar has a nominal diameter of 32.3 mm (1.27 in) and a cross-sectional area of 819 mm².
#10 rebar weight calculator
Weight of standard bar lengths
| Bars | 20 ft (lb) | 40 ft (lb) | 60 ft (lb) |
|---|---|---|---|
| 1 | 86.1 | 172.1 | 258.2 |
| 10 | 860.6 | 1,721.2 | 2,581.8 |
| 50 | 4,303.0 | 8,606.0 | 12,909.0 |
| 100 | 8,606.0 | 17,212.0 | 25,818.0 |
Bars per ton
| Bar length | Bars per short ton (2000 lb) |
|---|---|
| 20 ft | 23.2 |
| 40 ft | 11.6 |
| 60 ft | 7.7 |
One short ton of #10 rebar is 465 ft per short ton. Use this to turn a weight on a delivery note into a bar count.
How the weight is calculated
Area = π ÷ 4 × 32.3² = 819.4 mm². Weight per metre = area × 7850 kg/m³ = 819.4 × 10⁻⁶ m² × 7850 = 6.432 kg/m. In US units: 1.270² × 2.67 = 4.311 lb/ft.
Deformed bars and TMT bars are sold by nominal diameter and nominal mass; the ribs are already allowed for, and standards accept a small mass tolerance per bar. See the rebar weight formula guide.
#10 rebar per square foot of slab
Weight of #10 rebar in a slab or wall for common spacings, for one layer in one direction and for bars both ways. Add laps, hooks and chairs on top.
| Spacing (centres) | One direction (lb/ft²) | Both directions (lb/ft²) |
|---|---|---|
| 4 in | 12.91 | 25.82 |
| 6 in | 8.61 | 17.21 |
| 8 in | 6.45 | 12.91 |
| 10 in | 5.16 | 10.33 |
| 12 in | 4.30 | 8.61 |
| 18 in | 2.87 | 5.74 |
Compared with nearby sizes
| Bar | lb/ft | kg/m | vs this bar |
|---|---|---|---|
| #8 rebar | 2.670 | 3.973 | −38 % |
| #9 rebar | 3.400 | 5.060 | −21 % |
| #10 rebar | 4.303 | 6.404 | — |
| #11 rebar | 5.313 | 7.907 | +23 % |
| #14 rebar | 7.650 | 11.384 | +78 % |
Bars this heavy are used in heavily loaded columns, transfer beams, piles, bridge decks and large foundations. The nearest metric bar is 32 mm rebar (32 mm, 6.310 kg/m); in soft metric sizes #10 rebar is called No.32.
Frequently asked questions
What is the weight of #10 rebar per foot?
#10 rebar weighs 4.303 lb/ft (6.404 kg/m).
How much does a 20 ft bar of #10 rebar weigh?
86.1 lb (4.303 lb/ft × 20 ft). A 40 ft bar weighs 172.1 lb.
How many 20 ft bars of #10 rebar are in a ton?
About 23 bars per short ton (2000 lb), or 465 ft per short ton.
What is the metric equivalent of #10 rebar?
The nearest metric bar is 32 mm rebar (32 mm, 6.310 kg/m). In soft metric designation #10 rebar is also called No.32; it is the same bar. Check the steel area in the design before substituting one for the other.
How is the weight of #10 rebar calculated?
Area = π ÷ 4 × 32.3² = 819.4 mm². Weight per metre = area × 7850 kg/m³ = 819.4 × 10⁻⁶ m² × 7850 = 6.432 kg/m. In US units: 1.270² × 2.67 = 4.311 lb/ft.
How much #10 rebar is needed per square foot at 12 in spacing?
One layer at 12 in centres needs 4.303 lb/ft² in one direction, 8.606 lb/ft² for bars both ways, plus laps.
Other bar sizes
#3 rebar · #4 rebar · #5 rebar · #6 rebar · #7 rebar · #8 rebar · #9 rebar · #11 rebar · #14 rebar · #18 rebar
Full rebar weight chart · Steel weight calculator
Data adapted from Wikipedia, "Rebar" (CC BY-SA 4.0).