Round Bar Weight Calculator (MS Round Bar Weight Calculator)

Use this free Round Bar Weight Calculator to calculate the weight of mild steel round bars used in construction, fabrication, and structural engineering projects. Enter diameter and length to instantly calculate steel round bar weight.

Mar 7, 2026 - 21:41
Mar 7, 2026 - 22:39
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Round Bar Weight Calculator (MS Round Bar Weight Calculator)
Round Bar Weight Calculator (MS Round Bar Weight Calculator)

Round Bar Weight Calculator

Total Weight = 14.79 kg
Diameter (D)

Round bar dimension: D = Diameter

Formula Used to Calculate Round Bar Weight

The weight of a round steel bar can be calculated using the following formula:

Weight (kg) = D² × 0.006165 × Length

  • D = Diameter of round bar in millimeters
  • Length = Bar length in meters
  • 0.006165 = Constant derived from steel density

Example Calculation

For a round bar with the following dimensions:

  • Diameter = 20 mm
  • Length = 6 meters

Weight = 20² × 0.006165 × 6

Total Weight ≈ 14.79 kg

Frequently Asked Questions

What is the density of steel used in round bar calculation?

The density of steel used for weight calculation is approximately 7850 kg/m³.

Why calculate round bar weight?

Round bar weight calculation is important for estimating steel quantity, transportation load, project cost estimation, and structural design.

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Suraj Manikpuri Mechanical Engineer and Project Management Professional, Six Sigma & NDT certified with 15+ years of experience in steel plant and heavy industrial projects. Currently working as a Projects Manager, specializing in mechanical equipment erection, commissioning, and project execution. Skilled in Primavera P6 project planning, QA/QC systems, and site coordination, with a strong track record of delivering projects safely, efficiently, and on schedule.