Easily find the weight of various steel bars—round, square, flat, and hex—using this free online calculator. It supports both metric (kg/mtr) and imperial (lbs/ft) units, making it a versatile tool for anyone in the metalworking, construction, or fabrication industries.


Steel Bar Weight Calculator
- 👉 Round Bar Section Modulus Calculator – For strength calculations based on round shape.
- 👉 Solid Rectangular Bar Modulus Calculator – For strength calculation of flat bars.
- 👉 Bar Bending Machines – Use the weight info to plan your bending force and tooling.
Key Features
- Supports round, square, flat, and hexagonal steel bars
- Calculate in kg/mtr or lbs/ft
- Choose from metric and imperial units
- Instant results with easy-to-use interface
- Perfect for material estimation and weight verification
How to Use
- Select the steel bar type (e.g., round, flat, etc.)
- Enter the bar dimensions (diameter, width, thickness, etc.)
- Choose your preferred unit system (metric or imperial)
- Enter the length of the bar
- Click “Calculate” to get the weight per meter/foot and total weight
Calculation Principle
The calculator uses the standard density of steel:
- 7850 kg/m³ for metric
- 0.284 lb/in³ for imperial It then applies the appropriate geometric formula for each bar shape to compute the cross-sectional area and multiplies it by the length and density to determine the total weight.
FAQs
Q: What steel types does this calculator cover?
A: It assumes mild steel with standard density. For stainless or alloy steel bar profiles, please adjust the density manually if the tool allows.
Q: Is this calculator accurate for procurement use?
A: Yes, it’s ideal for estimating material weight for purchasing, shipping, and design—but always double-check with actual supplier specs.
Q: Can I use this for other metals?
A: Yes, but you must adjust the density to match the specific metal you’re working with.
Q: What units can I use?
A: Both metric (mm, kg/mtr) and imperial (inch, lbs/ft) are supported.