Canadian Rebar Sizes
| Metric Bar Size | Mass per unit length (kg/m) | Nominal Diameter (mm) | Cross-Sectional Area (mm2) |
|---|---|---|---|
| 10M | 0.785 | 11.3 | 100 |
| 15M | 1.570 | 16.0 | 200 |
| 20M | 2.355 | 19.5 | 300 |
| 25M | 3.925 | 25.2 | 500 |
| 30M | 5.495 | 29.9 | 700 |
| 35M | 7.850 | 35.7 | 1000 |
| 45M | 11.775 | 43.7 | 1500 |
| 55M | 19.625 | 56.4 | 2500 |
US Rebar Sizes
|
Imperial bar size |
Metric bar size (soft) |
Linear Mass Density | Nominal diameter | Nominal area | |||
|---|---|---|---|---|---|---|---|
| lb⁄ft | kg⁄m | (in) | (mm) | (in²) | (mm²) | ||
| #2[a] | No.6 | 0.167 | 0.249 | 0.250 = 1⁄4 | 6.35 | 0.05 | 32 |
| #3 | No.10 | 0.376 | 0.560 | 0.375 = 3⁄8 | 9.53 | 0.11 | 71 |
| #4 | No.13 | 0.668 | 0.994 | 0.500 = 1⁄2 | 12.7 | 0.20 | 129 |
| #5 | No.16 | 1.043 | 1.552 | 0.625 = 5⁄8 | 15.9 | 0.31 | 200 |
| #6 | No.19 | 1.502 | 2.235 | 0.750 = 3⁄4 | 19.1 | 0.44 | 284 |
| #7 | No.22 | 2.044 | 3.042 | 0.875 = 7⁄8 | 22.2 | 0.60 | 387 |
| #8 | No.25 | 2.670 | 3.973 | 1.000 = 8⁄8 | 25.4 | 0.79 | 510 |
| #9 | No.29 | 3.400 | 5.060 | 1.128 ≈ 9⁄8 | 28.7 | 1.00 | 645 |
| #10 | No.32 | 4.303 | 6.404 | 1.270 ≈ 10⁄8 | 32.3 | 1.27 | 819 |
| #11 | No.36 | 5.313 | 7.907 | 1.410 ≈ 11⁄8 | 35.8 | 1.56 | 1,006 |
| #14 | No.43 | 7.650 | 11.384 | 1.693 ≈ 14⁄8 | 43.0 | 2.25 | 1,452 |
| #18 | No.57 | 13.60 | 20.239 | 2.257 ≈ 18⁄8 | 57.3 | 4.00 | 2,581 |
- ^ Historic size designation that is no longer in common use.
Reference: https://en.wikipedia.org/wiki/Rebar