This rebar reference table shows the total rebar length for a range of slab length values, assuming a slab width of 4 m and a bar spacing of 0.2 m. Every figure is computed with the same engine that powers our Rebar Calculator, so the numbers are exact.
| Slab length | Total rebar length | Number of bars |
|---|---|---|
| 1.3 m | 55.30 | 28 |
| 2.5 m | 104.50 | 34 |
| 3.8 m | 155.80 | 40 |
| 5 m | 209.00 | 47 |
| 7.5 m | 309.50 | 59 |
| 10 m | 414.00 | 72 |
| 15 m | 619.00 | 97 |
| 25 m | 1,029.00 | 147 |
| 35 m | 1,439.00 | 197 |
| 50 m | 2,054.00 | 272 |
How to use this table
Find the row closest to your slab length and read across to the total rebar length. For a value between two rows, the real figure sits between them — or enter your exact numbers in the Rebar Calculator for a precise answer.
Need a value that is not in the table? — the Rebar Calculator does it instantly, for free, with the formula and a worked example built in.
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