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Calcimator

Climb Gradient Calculator

Convert rate of climb to climb gradient (ft/NM and %), check against departure procedure requirements, and verify obstacle clearance.

Inputs

fpm

C172 sea level: ~730 fpm, at 5000 ft: ~530 fpm

kt

Vy climb: 70–90 kt for light aircraft

ft/NM

Results

Climb Gradient

375 ft/NM

Meets Requirement?

Yes

Climb Gradient6.2%
ROC Needed for Requirement267 fpm

Climb Gradient

375 ft/NM

Meets Requirement?

Yes

How to Use This Calculator
  1. Enter your rate of climb from the POH at current conditions.
  2. Enter your climb ground speed (Vy adjusted for wind).
  3. Enter the required gradient from the departure procedure.
  4. Verify your gradient meets or exceeds the requirement.
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