Quickly and accurately calculate track gradients to ensure smooth, reliable performance for your model railroad layout. The NMRA Grade Elevation Calculator supports both standard (imperial) and metric measurements, making it perfect for hobbyists worldwide.
NMRA Grade Elevation Calculator for Track Design
2%: Ideal for most layouts; balances smooth operation and realistic performance without issues.
3%: Challenging but manageable; may cause slower speeds, uneven train movement, and minor operational inconsistencies.
4%: Steep incline; may lead to slower speeds, occasional derailments, and increased wear on locomotives and rolling stock.
5%: Very steep; can result in significant operational problems, including derailments, uneven movement, and motor strain.
Transition zones: Gradual transitions between flat and inclined track sections help reduce derailments and ensure smooth train movement.