Router Bit Speed Calculator
Calculate optimal RPM for router bits based on diameter and material for safe, efficient routing.
Router Bit Parameters
Recommended RPM
Enter bit parameters to calculate optimal RPM.
RPM Guidelines
Up to 1"18,000-24,000 RPM
1" to 2"12,000-18,000 RPM
2" to 3"8,000-12,000 RPM
Over 3"6,000-10,000 RPM
Router Bit Speed Guide
Safety Rule
Larger bits = Lower RPM
- Never exceed bit's rated speed
- Large bits at high RPM = dangerous
- Surface speed should be 8,000-12,000 FPM
Variable Speed Routers
- Essential for large bits (2"+)
- Adjust based on bit diameter
- Start low, increase if needed
- Listen for smooth operation
Bit-Specific Tips
- Small bits (≤1"): 18,000-24,000 RPM
- Medium bits (1-2"): 12,000-18,000 RPM
- Large bits (2-3"): 8,000-12,000 RPM
- Panel raising (3"+): 6,000-10,000 RPM
Best Practices
- Use sharp bits
- Multiple shallow passes
- Secure workpiece firmly
- Wear safety equipment
- Check bit balance