10 mm rebar weight
0.617 kg/m · 0.415 lb/ft
10 mm rebar has a nominal diameter of 10 mm and a cross-sectional area of 78.5 mm².
10 mm rebar weight calculator
Weight of standard bar lengths
| Bars | 6 m (kg) | 12 m (kg) |
|---|---|---|
| 1 | 3.7 | 7.4 |
| 10 | 37.0 | 74.0 |
| 50 | 185.1 | 370.2 |
| 100 | 370.2 | 740.4 |
Bars per tonne
| Bar length | Bars per tonne |
|---|---|
| 6 m | 270.1 |
| 9 m | 180.1 |
| 12 m | 135.1 |
One tonne of 10 mm rebar is 1,621 m per tonne. Use this to turn a weight on a delivery note into a bar count.
How the weight is calculated
Area = π ÷ 4 × 10² = 78.5 mm². Weight per metre = area × 7850 kg/m³ = 78.5 × 10⁻⁶ m² × 7850 = 0.617 kg/m. The d² ÷ 162 rule gives 100 ÷ 162 = 0.617 kg/m.
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 mm rebar per square metre of slab
Weight of 10 mm 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 (kg/m²) | Both directions (kg/m²) |
|---|---|---|
| 100 mm | 6.17 | 12.34 |
| 125 mm | 4.94 | 9.87 |
| 150 mm | 4.11 | 8.23 |
| 200 mm | 3.09 | 6.17 |
| 250 mm | 2.47 | 4.94 |
| 300 mm | 2.06 | 4.11 |
Compared with nearby sizes
| Bar | kg/m | lb/ft | vs this bar |
|---|---|---|---|
| 6 mm rebar | 0.222 | 0.149 | −64 % |
| 8 mm rebar | 0.395 | 0.265 | −36 % |
| 10 mm rebar | 0.617 | 0.415 | — |
| 12 mm rebar | 0.888 | 0.597 | +44 % |
| 14 mm rebar | 1.210 | 0.813 | +96 % |
Bars of this size are typical for slab and wall reinforcement, footings of houses, lintels and stirrups in larger beams. The nearest US bar is #3 rebar (9.5 mm, 0.560 kg/m).
Frequently asked questions
What is the weight of 10 mm rebar per metre?
10 mm rebar weighs 0.617 kg/m (0.415 lb/ft). By the rule of thumb d squared over 162: 10 x 10 / 162 = 0.617 kg/m.
How much does a 12 m bar of 10 mm rebar weigh?
7.40 kg (0.617 kg/m × 12 m). A 6 m bar weighs 3.70 kg.
How many 12 m bars of 10 mm rebar are in a tonne?
About 135.1 bars, or 1,621 m per tonne.
What is the US equivalent of 10 mm rebar?
The nearest US bar is #3 rebar (9.5 mm, 0.560 kg/m). Check the steel area in the design before substituting one for the other.
How is the weight of 10 mm rebar calculated?
Area = π ÷ 4 × 10² = 78.5 mm². Weight per metre = area × 7850 kg/m³ = 78.5 × 10⁻⁶ m² × 7850 = 0.617 kg/m. The d² ÷ 162 rule gives 100 ÷ 162 = 0.617 kg/m.
How much 10 mm rebar is needed per square metre at 150 mm spacing?
One layer at 150 mm centres needs 4.11 kg/m² in one direction, 8.23 kg/m² for bars both ways, plus laps.
Other bar sizes
6 mm rebar · 8 mm rebar · 12 mm rebar · 14 mm rebar · 16 mm rebar · 20 mm rebar · 25 mm rebar · 28 mm rebar · 32 mm rebar · 40 mm rebar · 50 mm rebar
Full rebar weight chart · Steel weight calculator
Data adapted from Wikipedia, "Rebar" (CC BY-SA 4.0).