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Round Bar Weight Calculator

Calculate the weight of solid round bar in carbon steel, stainless steel and other materials, per metre and per order quantity.

Inputs
Results
Weight per metre
3.853 kg/m
Weight per piece
23.12 kg
Total (1 pcs)
23.12 kg
Total in tonnes
0.023 MT
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About the Round Bar Weight Calculator

Solid round bar weight follows directly from diameter and length. Use this calculator for MS bright bar, black bar and stainless round bar when estimating machining stock, fabrication material or freight.

How to use it

  1. 01Enter the bar diameter in mm or inches.
  2. 02Enter the length of one bar and the number of bars.
  3. 03Choose the material grade or set a custom density.
  4. 04Read kg per metre, kg per bar and total weight.

Common questions

What is the formula for round bar weight?
Weight per metre = π/4 × d² (mm) × density (kg/m³) × 1e-6. For mild steel this simplifies to d² ÷ 162 kg per metre.
Can I use it for hexagonal or square bar?
No — this tool assumes a circular cross section. Square and hex sections need their own area formula.

Need the material rather than the maths? Browse our steel and piping products, check the steel pipe dimensions chart or the flange dimensions chart.

This calculator is free to use and built for Indian metric practice — weights in kilograms and kg per metre, dimensions in millimetres. Omegha Steel supplies pipes, fittings, flanges and fasteners from Kolkata to projects across India; send us the sizes you have calculated and we will quote on them.