Model Railroad Track Calculator
Plan model railroad layouts with minimum curve radius, track spacing, grade limits, and turnout sizing by scale.
Inputs
Results
Recommended Min Radius
18"
Track Center Spacing
2"
Max Train Length60"
Turnout Length10.8"
Max Grade4%
How to Use This Calculator
- Enter Scale, N Scale (1:160), and HO Scale (1:87).
- Set O Scale (1:48), G Scale (1:22.5), and Table Width (inches).
- Adjust Table Length (inches), Min Curve Radius (inches) as needed.
- Review Recommended Min Radius () and Track Center Spacing ().
- Use Max Train Length () and Turnout Length () to inform your decision.
Ad Placeholder
Related Calculators
Scale Conversion Calculator
Convert real-world dimensions to model scale dimensions. Supports common model scales like HO (1:87), N (1:160), O (1:48), and more.
Diorama Forced Perspective Calculator
Calculate forced perspective scale transitions for dioramas. Determine foreground and background element sizes for depth illusion.
Slot Car Speed Calculator
Calculate actual and scale speed of slot cars from motor RPM, tire diameter, gear ratio, and scale.
Ad Placeholder