Weight of Bolt Calculator
⚡ Professional bolt weight estimator • Real-time • Cost • Shipping • Dynamic visual preview
12 mm
mm
inch
60 mm
mm
inch
Total Weight
0.00 kg
0.00 lbs
Total Cost$0.00
Est. Shipping$0.00
🔩 Steel
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🪙 Aluminum
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💡 Select material and adjust dimensions for instant calculation
What is Bolt Weight Calculation?
Bolt weight calculation uses volume × material density. For cylindrical bolts, volume = π × (d/2)² × length. This tool automatically computes weight for steel, stainless, aluminum, brass, and titanium — with instant unit conversion (mm/inch, kg/lbs). Perfect for engineers, procurement, and DIY projects.
Bolt Weight Chart (Steel, kg per 100 pcs)
| Diameter (mm) | Length 50mm | Length 100mm | Length 150mm |
|---|---|---|---|
| 8 | 1.45 kg | 2.90 kg | 4.35 kg |
| 10 | 2.27 kg | 4.54 kg | 6.81 kg |
| 12 | 3.27 kg | 6.54 kg | 9.81 kg |
| 16 | 5.82 kg | 11.64 kg | 17.46 kg |
Frequently Asked Questions
How is bolt weight calculated?
Weight = Volume × Density. Volume for cylindrical bolt = π × radius² × length. The calculator automatically applies the correct density based on material selection.
What materials are supported?
Steel (7.85 g/cm³), Stainless Steel (7.9), Brass (8.5), Aluminum (2.7), and Titanium (4.5). All densities are pre-loaded.
Can I switch between metric and imperial?
Yes! Use the mm/inch toggle for diameter and length. Weight is shown in both kg and lbs.
How does shipping cost estimation work?
Shipping is estimated at $2.50 per kg for ground shipping within USA. This helps budget total project cost.
What is the reverse calculation feature?
Use the quantity input to find total weight for multiple bolts, or divide total weight by single bolt weight to find quantity needed.