KhoiLuongThep.com › Round bar
Enter diameter D and length to get kg/m, kg/bar, total weight and paint area.
kg/m = 0.006165 × D²
Enter dimensions in mm.
Theoretical weight from nominal dimensions, excluding rolling tolerance and cutting loss.
| Quantity | Formulas | Unit |
|---|---|---|
| Weight per metre | 0.006165 × D² | kg/m |
| Weight of 1 bar | 0.006165 × D² × L / 1000 | kg |
| Paint area | π × D / 1000 | m²/m |
| D (mm) | kg/m | 6 m length (kg) |
|---|---|---|
| 6 | 0.222 | 1.33 |
| 8 | 0.395 | 2.37 |
| 10 | 0.617 | 3.7 |
| 12 | 0.888 | 5.33 |
| 14 | 1.208 | 7.25 |
| 16 | 1.578 | 9.47 |
| 18 | 1.998 | 11.99 |
| 20 | 2.466 | 14.8 |
| 22 | 2.984 | 17.9 |
| 25 | 3.853 | 23.12 |
| 28 | 4.834 | 29 |
| 30 | 5.549 | 33.29 |
| 32 | 6.313 | 37.88 |
| 36 | 7.99 | 47.94 |
| 40 | 9.865 | 59.19 |
| 45 | 12.48 | 74.91 |
| 50 | 15.41 | 92.48 |
| 60 | 22.2 | 133.17 |
| 70 | 30.21 | 181.26 |
| 80 | 39.46 | 236.75 |
| 90 | 49.94 | 299.64 |
| 100 | 61.65 | 369.92 |
| 120 | 88.78 | 532.69 |
| 150 | 138.72 | 832.33 |
| 200 | 246.62 | 1 479.69 |
0.006165 × 20² = 2.47 kg/m. A 6 m bar weighs about 14.8 kg.
0.006165 × 10² = 0.617 kg/m.
0.006165 × 50² × 6 ≈ 92.5 kg.
Stainless 304 is about 1% heavier than carbon steel: π/4 × 25² × 7930 / 10⁶ ≈ 3.89 kg/m.