Mild Steel Round Bar Weight Chart
Quick answer: MS round bar weight (kg/m) = diameter² (mm) × 0.006165, or d² ÷ 162. Examples: 12 mm = 0.89 kg/m, 20 mm = 2.47 kg/m, 25 mm = 3.85 kg/m, 50 mm = 15.4 kg/m. In the UAE, round bar sells for about AED 2,650–3,200 per ton (Nov 2026).
Updated November 2026. This chart gives the weight of mild steel (MS) round bar in kg per metre and per standard 6 metre length, for diameters from 6 mm to 250 mm. Use it to estimate order weight, transport loads and cost per piece. For example, a 20 mm round bar weighs about 2.47 kg per metre, so one 6 m bar is about 14.8 kg.
Weight Chart of ms round bar 6 meter length
| name | Size (mm) | Length( MM) | Pet Mtr weight -KG | 6Mtr weight |
| MS Round Bar | 6 | 6000 | 0.22154 | 1.33 |
| MS Round Bar | 8 | 6000 | 0.39385 | 2.36 |
| MS Round Bar | 10 | 6000 | 0.61538 | 3.69 |
| MS Round Bar | 12 | 6000 | 0.88615 | 5.32 |
| MS Round Bar | 14 | 6000 | 1.20615 | 7.24 |
| MS Round Bar | 16 | 6000 | 1.57538 | 9.45 |
| MS Round Bar | 18 | 6000 | 1.99385 | 11.96 |
| MS Round Bar | 20 | 6000 | 2.46154 | 14.77 |
| MS Round Bar | 25 | 6000 | 3.84615 | 23.08 |
| MS Round Bar | 30 | 6000 | 5.53846 | 33.23 |
| MS Round Bar | 35 | 6000 | 7.53846 | 45.23 |
| MS Round Bar | 40 | 6000 | 9.84615 | 59.08 |
| MS Round Bar | 45 | 6000 | 12.46154 | 74.77 |
| MS Round Bar | 48 | 6000 | 14.17846 | 85.07 |
| MS Round Bar | 50 | 6000 | 15.38462 | 92.31 |
| MS Round Bar | 60 | 6000 | 22.15385 | 132.92 |
| MS Round Bar | 65 | 6000 | 26.00000 | 156.00 |
| MS Round Bar | 70 | 6000 | 30.15385 | 180.92 |
| MS Round Bar | 80 | 6000 | 39.38462 | 236.31 |
| MS Round Bar | 100 | 6000 | 61.53846 | 369.23 |
| MS Round Bar | 120 | 6000 | 88.61538 | 531.69 |
| MS Round Bar | 150 | 6000 | 138.46154 | 830.77 |
| MS Round Bar | 200 | 6000 | 246.15385 | 1476.92 |
| MS Round Bar | 250 | 6000 | 384.61538 | 2307.69 |
How to calculate MS round bar weight
Round bar weight per metre = D² ÷ 162 (D = diameter in mm, result in kg/m). This comes from the bar’s cross-section area multiplied by the density of steel, 7,850 kg/m³.
- 16 mm bar: 16 × 16 ÷ 162 = 1.58 kg/m, or 9.47 kg per 6 m bar
- 25 mm bar: 25 × 25 ÷ 162 = 3.86 kg/m, or 23.1 kg per 6 m bar
- 32 mm bar: 32 × 32 ÷ 162 = 6.32 kg/m, or 37.9 kg per 6 m bar
Weights in the chart are theoretical. Actual bars can be slightly heavier or lighter because of rolling tolerance, so always confirm the weight on the mill certificate for large orders. For other lengths or metals, use our free metal weight calculator.
Frequently asked questions
How much does a 12 mm MS round bar weigh?
About 0.89 kg per metre, so a 6 m bar weighs about 5.3 kg.
What is the formula for round bar weight?
Weight in kg/m = D² ÷ 162, where D is the diameter in mm. Multiply by the length in metres for the total weight.
Is MS round bar the same as rebar?
No. MS round bar is smooth, while rebar (deformed bar) has ribs for bonding with concrete. Their nominal weights per metre for the same diameter are almost the same.
Related guides and products
Buy MS round bar in Dubai
Ibnee Younus Building & Construction Materials Trading Co. LLC supplies steel from Dubai Industrial City, open every day from 8 AM to 7 PM. Send your sizes and quantities on WhatsApp and we will reply with price and stock availability.
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