Calculators / Performance / Climb Gradient to FPM

Verify before flight. PilotDesk checks basic input plausibility, but it cannot verify aircraft configuration, limitations, weather accuracy, NOTAMs, runway conditions, or approved performance data.

Performance

Climb Gradient to FPM

Convert a required climb gradient in ft/NM into vertical speed at groundspeed.

Gradient

ft/NM

Groundspeed

Vertical speed—

Gradient percent—

NM/min—

This calculator is a planning/training aid. Do not use it as a substitute for the aircraft POH/AFM, approved performance data, current charts, regulations, weather products, or instructor/operator procedures.

How to use it

Enter the known values above. PilotDesk recalculates as you type. Results are rounded for quick planning and study use.

For aircraft-specific limitations or performance, always use the current approved source for that exact aircraft and operation.

Method & assumptions

Use groundspeed, not airspeed, when converting a published ft/NM requirement.

Vertical speed (fpm) = climb gradient (ft/NM) × groundspeed (kt) ÷ 60.