16 mm rebar weight
1.580 kg/m · 1.062 lb/ft
16 mm rebar has a nominal diameter of 16 mm and a cross-sectional area of 201 mm².
16 mm rebar weight calculator
Weight of standard bar lengths
| Bars | 6 m (kg) | 12 m (kg) |
|---|---|---|
| 1 | 9.5 | 19.0 |
| 10 | 94.8 | 189.6 |
| 50 | 474.0 | 948.0 |
| 100 | 948.0 | 1,896.0 |
Bars per tonne
| Bar length | Bars per tonne |
|---|---|
| 6 m | 105.5 |
| 9 m | 70.3 |
| 12 m | 52.7 |
One tonne of 16 mm rebar is 633 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 × 16² = 201.1 mm². Weight per metre = area × 7850 kg/m³ = 201.1 × 10⁻⁶ m² × 7850 = 1.578 kg/m. The d² ÷ 162 rule gives 256 ÷ 162 = 1.580 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.
16 mm rebar per square metre of slab
Weight of 16 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 | 15.80 | 31.60 |
| 125 mm | 12.64 | 25.28 |
| 150 mm | 10.53 | 21.07 |
| 200 mm | 7.90 | 15.80 |
| 250 mm | 6.32 | 12.64 |
| 300 mm | 5.27 | 10.53 |
Compared with nearby sizes
| Bar | kg/m | lb/ft | vs this bar |
|---|---|---|---|
| 12 mm rebar | 0.888 | 0.597 | −44 % |
| 14 mm rebar | 1.210 | 0.813 | −23 % |
| 16 mm rebar | 1.580 | 1.062 | — |
| 20 mm rebar | 2.470 | 1.660 | +56 % |
| 25 mm rebar | 3.850 | 2.587 | +144 % |
Bars of this size are typical main reinforcement for beams, columns, footings and retaining walls. The nearest US bar is #5 rebar (15.9 mm, 1.552 kg/m).
Frequently asked questions
What is the weight of 16 mm rebar per metre?
16 mm rebar weighs 1.580 kg/m (1.062 lb/ft). By the rule of thumb d squared over 162: 16 x 16 / 162 = 1.580 kg/m.
How much does a 12 m bar of 16 mm rebar weigh?
18.96 kg (1.580 kg/m × 12 m). A 6 m bar weighs 9.48 kg.
How many 12 m bars of 16 mm rebar are in a tonne?
About 52.7 bars, or 633 m per tonne.
What is the US equivalent of 16 mm rebar?
The nearest US bar is #5 rebar (15.9 mm, 1.552 kg/m). Check the steel area in the design before substituting one for the other.
How is the weight of 16 mm rebar calculated?
Area = π ÷ 4 × 16² = 201.1 mm². Weight per metre = area × 7850 kg/m³ = 201.1 × 10⁻⁶ m² × 7850 = 1.578 kg/m. The d² ÷ 162 rule gives 256 ÷ 162 = 1.580 kg/m.
How much 16 mm rebar is needed per square metre at 150 mm spacing?
One layer at 150 mm centres needs 10.53 kg/m² in one direction, 21.07 kg/m² for bars both ways, plus laps.
Other bar sizes
6 mm rebar · 8 mm rebar · 10 mm rebar · 12 mm rebar · 14 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).