Coil Weight Calculator
Calculate the weight of metal coils instantly based on material, outer diameter (OD), inner diameter (ID), coil width, and quantity. This tool is widely used in sheet metal processing, steel trading, and manufacturing cost estimation.
Coil Weight
Calculator
Quick Answer
👉 Basic formula:
Weight = π × (OD² − ID²) / 4 × Width × Density × Quantity
- OD = Outer Diameter
- ID = Inner Diameter
- Width = Coil width
- Density = Material density
✔ Example (steel coil):
OD 1000 mm, ID 500 mm, Width 1000 mm
→ Weight ≈ 4,625 kg
Formula (Coil Weight Calculation)
Standard Engineering Formula:
Weight (kg) = π × (OD² − ID²) / 4 × Width × Density × Quantity ÷ 1,000,000
(when: OD, ID, Width in mm and density in g/cm³)
Common Material Density (Reference)
| Material | Density (g/cm³) |
|---|---|
| Aluminum 6061 | 2.70 |
| Aluminum 7075 | 2.81 |
| Carbon Steel | 7.85 |
| Stainless Steel | 7.93–8.00 |
| Titanium Grade 5 | 4.43 |
| Brass | 8.50 |
| Copper | 8.96 |
Coil Weight Reference (Example)
(Carbon Steel, Density = 7.85 g/cm³)
| OD (mm) | ID (mm) | Width (mm) | Weight (kg) |
|---|---|---|---|
| 800 | 400 | 1000 | 2,958 |
| 1000 | 500 | 1000 | 4,625 |
| 1200 | 600 | 1200 | 7,994 |
How to Use This Calculator
- Select a material (auto-fills density)
- Enter outer diameter (OD)
- Enter inner diameter (ID)
- Input coil width (mm)
- Enter quantity (pcs)
- Get instant total weight (kg)
✔ Real-time calculation
✔ Ideal for procurement and production planning
Common Engineering Uses
1. Steel & Aluminum Coil Trading
- Quickly estimate coil weight for pricing and logistics
2. Sheet Metal Processing
- Determine available material before slitting or cutting
3. Inventory Management
- Track stock weight for warehouse control
4. Shipping & Logistics
- Calculate freight cost based on total coil weight
Important Notes
- Ensure OD > ID, otherwise the result is invalid
- Density varies depending on alloy and processing condition
- Units must be consistent (mm + g/cm³ recommended)
Related Calculators
Enhance your workflow:
- Sheet Metal Weight Calculator
- Pipe Weight Calculator
- Density Calculator
- Kg to Lbs Calculator
FAQ
How do you calculate coil weight?
Use:
👉 Weight = π × (OD² − ID²) / 4 × Width × Density
What happens if OD equals ID?
The coil has no material thickness, so weight = 0.
Can I use this for all materials?
Yes, as long as the correct density is used.
What unit is the result in?
Typically kilograms (kg).
Why is coil weight important?
It directly affects material cost, inventory, and shipping.
CNC Machining Shops
Need Custom Sheet Metal or Coil Processing?
Accurate weight calculation helps reduce cost and optimize production.
👉 We offer:
- Coil slitting, cutting, and fabrication
- CNC machining and sheet metal services
- Wide range of materials and specifications
- Fast quoting and global delivery
Upload your requirements today and get a fast, accurate quote.
