Round Bar Weight Calculator
Calculate the weight of round bars (solid cylinders) instantly based on material, diameter, length, and quantity. This tool is widely used in CNC machining, steel trading, and manufacturing cost estimation.
Round Bar
Weight Calculator
Quick Answer
š Basic formula:
Weight = Ļ Ć (DĀ² / 4) Ć Length Ć Density Ć Quantity
- D = Diameter
- Length = Bar length
- Density = Material density
ā Example:
Steel round bar Ć20 mm Ć 1000 mm
ā Weight ā 2.47 kg
Formula (Round Bar Weight)
Standard Engineering Formula:
Weight (kg) = Ļ Ć (DĀ² / 4) Ć L Ć Density Ć Quantity Ć· 1,000,000
(when: D & L in mm, density in g/cmĀ³)
Common Material Density (Reference)
| Material | Density (g/cmĀ³) |
|---|---|
| Aluminum 6061 | 2.70 |
| Aluminum 7075 | 2.81 |
| Carbon Steel | 7.85 |
| Stainless Steel | 7.93ā8.00 |
| Titanium Grade 5 | 4.43 |
| Brass | 8.50 |
| Copper | 8.96 |
Round Bar Weight Reference Table
(Based on Carbon Steel, Density = 7.85 g/cmĀ³, Length = 1 meter)
| Diameter (mm) | Weight (kg/m) |
|---|---|
| 10 | 0.62 |
| 20 | 2.47 |
| 30 | 5.55 |
| 50 | 15.42 |
| 100 | 61.65 |
How to Use This Calculator
- Select a material (auto-fills density)
- Enter diameter (mm)
- Enter length (mm)
- Input quantity (pcs)
- Get instant total weight (kg)
ā Real-time calculation
ā Ideal for engineering and procurement
Common Engineering Uses
1. CNC Machining Cost Estimation
- Raw material cost is directly based on weight
2. Material Procurement
- Calculate required bar stock before purchasing
3. Shipping & Logistics
- Estimate shipping cost based on total weight
4. Structural & Mechanical Design
- Evaluate load and weight distribution
Important Notes
- Ensure all units are consistent (mm + g/cmĀ³ recommended)
- Density varies slightly depending on alloy and condition
- For hollow bars (tubes), use a different formula
Related Calculators
Enhance your workflow:
- Metal Weight Calculator
- Density Calculator
- Kg to Lbs Calculator
- Pipe Weight Calculator
FAQ
How do you calculate round bar weight?
Use:
š Weight = Ļ Ć (DĀ² / 4) Ć Length Ć Density
What is the weight of a 20 mm steel bar per meter?
ā 2.47 kg/m
Does material affect weight?
Yes, density varies by material (steel, aluminum, titanium, etc.)
Can I calculate hollow bars?
This calculator is for solid round bars only.
What unit is the result in?
Typically kilograms (kg).
CNC Machining Shops
Need Custom CNC Machined Round Bars?
Accurate weight calculation helps control cost and material usage.
š We offer:
- Precision CNC machining for round bar components
- Wide range of materials and diameters
- Fast quoting based on your drawings
- Global shipping and reliable quality
Upload your CAD file today and get a fast, accurate quote.
