Unit weights of steel bars of different diameters

- 8mm diameter bar: 0.395 kg/m (or 395 gm/m)

- 10mm diameter bar: 0.617 kg/m (or 617 gm/m)

- 12mm diameter bar: 0.888 kg/m (or 888 gm/m)

- 16mm diameter bar: 1.580 kg/m (or 1580 gm/m)

- 20mm diameter bar: 2.469 kg/m (or 2469 gm/m)

- 25mm diameter bar: 3.858 kg/m (or 3858 gm/m)

- 32mm diameter bar: 6.320 kg/m (or 6320 gm/m)

- 40mm diameter bar: 9.876 kg/m (or 9876 gm/m)

These unit weights are commonly used in construction and engineering to calculate the total weight of steel required for a project.