Runway Slope Calculator

Calculate runway gradient and its effect on performance.

Optional - for performance estimate

Slope Effects

  • Takeoff uphill: +10% distance per 1% upslope
  • Takeoff downhill: -5% distance per 1% downslope
  • Landing uphill: -5% distance per 1% upslope
  • Landing downhill: +10% distance per 1% downslope

Formula

Gradient (%) = (Elevation Diff / Runway Length) x 100