How to Calculate Steel Weight in KG

As we know that, length of one rod of steel available in market  is 12m.

Therefore,

    Weight of rod per metre = D²/162 

where, D = diameter of rod

For 1m :

1.   8mm =   8x8/162   = 0.39kg/m 
2. 10mm = 10x10/162 = 0.61 kg/m
3. 12mm = 12x12/162 = 0.88 kg/m 
4. 16mm = 16x16/162 = 1.58 kg/m 
5. 20mm = 20x20/162 = 2.46 kg/m
6. 25mm = 25x25/162 = 3.85 kg/m and so on......

For 12m :

1.   8mm = 0.39x12 =  4.68 kg
2. 10mm = 0.61x12 = 7.32 kg
3. 12mm = 0.88x12 = 10.56 kg
4. 16mm = 1.58x12 = 18.96 kg
5. 20mm = 2.46x12 = 29.56 kg
6. 25mm = 3.85x12 = 46.52 kg and so on......