#5 rebar weight
1.043 lb/ft · 1.552 kg/m
#5 rebar has a nominal diameter of 15.9 mm (0.625 in) and a cross-sectional area of 199 mm².
#5 rebar weight calculator
Weight of standard bar lengths
| Bars | 20 ft (lb) | 40 ft (lb) | 60 ft (lb) |
|---|---|---|---|
| 1 | 20.9 | 41.7 | 62.6 |
| 10 | 208.6 | 417.2 | 625.8 |
| 50 | 1,043.0 | 2,086.0 | 3,129.0 |
| 100 | 2,086.0 | 4,172.0 | 6,258.0 |
Bars per ton
| Bar length | Bars per short ton (2000 lb) |
|---|---|
| 20 ft | 95.9 |
| 40 ft | 47.9 |
| 60 ft | 32.0 |
One short ton of #5 rebar is 1,918 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 × 15.9² = 198.6 mm². Weight per metre = area × 7850 kg/m³ = 198.6 × 10⁻⁶ m² × 7850 = 1.559 kg/m. In US units: 0.625² × 2.67 = 1.044 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.
#5 rebar per square foot of slab
Weight of #5 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 | 3.13 | 6.26 |
| 6 in | 2.09 | 4.17 |
| 8 in | 1.56 | 3.13 |
| 10 in | 1.25 | 2.50 |
| 12 in | 1.04 | 2.09 |
| 18 in | 0.70 | 1.39 |
Compared with nearby sizes
| Bar | lb/ft | kg/m | vs this bar |
|---|---|---|---|
| #3 rebar | 0.376 | 0.560 | −64 % |
| #4 rebar | 0.668 | 0.994 | −36 % |
| #5 rebar | 1.043 | 1.552 | — |
| #6 rebar | 1.502 | 2.235 | +44 % |
| #7 rebar | 2.044 | 3.042 | +96 % |
Bars of this size are typical main reinforcement for beams, columns, footings and retaining walls. The nearest metric bar is 16 mm rebar (16 mm, 1.580 kg/m); in soft metric sizes #5 rebar is called No.16.
Frequently asked questions
What is the weight of #5 rebar per foot?
#5 rebar weighs 1.043 lb/ft (1.552 kg/m).
How much does a 20 ft bar of #5 rebar weigh?
20.9 lb (1.043 lb/ft × 20 ft). A 40 ft bar weighs 41.7 lb.
How many 20 ft bars of #5 rebar are in a ton?
About 96 bars per short ton (2000 lb), or 1,918 ft per short ton.
What is the metric equivalent of #5 rebar?
The nearest metric bar is 16 mm rebar (16 mm, 1.580 kg/m). In soft metric designation #5 rebar is also called No.16; it is the same bar. Check the steel area in the design before substituting one for the other.
How is the weight of #5 rebar calculated?
Area = π ÷ 4 × 15.9² = 198.6 mm². Weight per metre = area × 7850 kg/m³ = 198.6 × 10⁻⁶ m² × 7850 = 1.559 kg/m. In US units: 0.625² × 2.67 = 1.044 lb/ft.
How much #5 rebar is needed per square foot at 12 in spacing?
One layer at 12 in centres needs 1.043 lb/ft² in one direction, 2.086 lb/ft² for bars both ways, plus laps.
Other bar sizes
#3 rebar · #4 rebar · #6 rebar · #7 rebar · #8 rebar · #9 rebar · #10 rebar · #11 rebar · #14 rebar · #18 rebar
Full rebar weight chart · Steel weight calculator
Data adapted from Wikipedia, "Rebar" (CC BY-SA 4.0).