Track Length Calculator — Layout Planning
Calculate total track length needed for your model railway layout plan including sidings.
Longest dimension
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How We Calculate This
Calculates main line track length from layout dimensions and track plan style, then adds siding lengths.
Formula
- Oval = 2 x Length + Pi x Radius x 2 (for curves at each end)
- Sidings total = Number of sidings x Average siding length
- Total track = Main line + Sidings total
- Flex track pieces = Total / Track piece length (914mm for OO)
Frequently Asked Questions
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Last updated: February 2026
All calculations are estimates. Always verify quantities before purchasing materials.