Rebar weight chart
Nominal weight per metre, per 12 m bar and bars per tonne for 8–40 mm rebar. Today’s price for each size is in the last column.
| 8 | 0.395 | 4.74 | 210 | Rebar 8 price |
|---|---|---|---|---|
| 10 | 0.617 | 7.40 | 135 | Rebar 10 price |
| 12 | 0.888 | 10.7 | 93 | Rebar 12 price |
| 14 | 1.209 | 14.5 | 68 | Rebar 14 price |
| 16 | 1.580 | 19.0 | 52 | Rebar 16 price |
| 18 | 1.999 | 24.0 | 41 | Rebar 18 price |
| 20 | 2.468 | 29.6 | 33 | Rebar 20 price |
| 22 | 2.986 | 35.8 | 27 | Rebar 22 price |
| 25 | 3.856 | 46.3 | 21 | Rebar 25 price |
| 28 | 4.837 | 58.0 | 17 | Rebar 28 price |
| 32 | 6.318 | 75.8 | 13 | Rebar 32 price |
| 36 | 7.996 | 96.0 | 10 | — |
| 40 | 9.872 | 118.5 | 8 | — |
Nominal weight from 0.00617 × diameter². Mill-rolled bars can run 4–5% lighter; the price tables list each product’s actual bar weight.
Frequently asked questions
How much does 8 mm rebar weigh?
0.395 kg per metre nominal, so a 12 m bar weighs about 4.7 kg.
How much does 10 mm rebar weigh?
0.617 kg per metre nominal, so a 12 m bar weighs about 7.4 kg.
How much does 12 mm rebar weigh?
0.888 kg per metre nominal, so a 12 m bar weighs about 10.7 kg.
How much does 14 mm rebar weigh?
1.209 kg per metre nominal, so a 12 m bar weighs about 14.5 kg.
How much does 16 mm rebar weigh?
1.580 kg per metre nominal, so a 12 m bar weighs about 19.0 kg.
How much does 18 mm rebar weigh?
1.999 kg per metre nominal, so a 12 m bar weighs about 24.0 kg.
How much does 20 mm rebar weigh?
2.468 kg per metre nominal, so a 12 m bar weighs about 29.6 kg.
How much does 22 mm rebar weigh?
2.986 kg per metre nominal, so a 12 m bar weighs about 35.8 kg.
How much does 25 mm rebar weigh?
3.856 kg per metre nominal, so a 12 m bar weighs about 46.3 kg.
How many 12 mm rebars are in a tonne?
A 12 m 12 mm bar weighs about 10.7 kg, so a tonne holds about 93 bars.
How many 14 mm rebars are in a tonne?
A 12 m 14 mm bar weighs about 14.5 kg, so a tonne holds about 68 bars.
How many 16 mm rebars are in a tonne?
A 12 m 16 mm bar weighs about 19.0 kg, so a tonne holds about 52 bars.
How is rebar weight calculated?
Weight per metre is 0.00617 × diameter² (mm): for 16 mm, 0.00617 × 256 = 1.580 kg. Mill bars can run 4–5% lighter, so the price tables list each product’s actual weight.