Landing Distance Calculator

Estimate landing ground roll and total distance, corrected for altitude, temperature, weight, wind, runway condition, and regulatory safety factors.

POH Base Ground Roll

C172S: 600 ft, C182T: 590 ft

Pressure Altitude

Outside Air Temperature

°F

Headwind Component

Tailwind Component

Landing Weight

Runway Condition

Tab to move between fields

Landing Ground Roll

634 ft

≈ 8 tennis courts

Total Over 50 ft Obstacle

1,059 ft

≈ 13 tennis courts

Factored Distance (Regulatory)1,059 ft

Runway ConditionDry

How to Use This Calculator

How the result changes with POH Reference Weight

POH Base Ground Roll: Landing ground roll at sea level, standard temp, max gross, no wind from POH.
Pressure Altitude: Airport pressure altitude.
Outside Air Temperature: Current OAT at the airport.
Headwind Component: Headwind component on landing runway.
Tailwind Component: Tailwind component — avoid landing with tailwinds when possible.
Landing Weight: Expected weight at landing (takeoff weight minus fuel burned).
POH Reference Weight: Weight used in the POH chart.
Runway Condition: Wet adds ~30%, contaminated adds ~60% to landing distance.
Runway Slope: Positive = uphill landing (shorter). Negative = downhill (longer).
Operation Type: Part 121/135 apply regulatory safety factors (1.43 dry, 1.67 wet).

Factored Distance (Regulatory): With Part 121/135 safety factor applied (if applicable).

Base Landing Ground Roll
From POH at sea level, standard temp, max gross, no wind
600 ft = 600 ft
Altitude Correction
Factor = 1 + 5% per 1,000 ft PA
1 + 0.05 × (5,000 ÷ 1000) = ×1.25
Runway Condition
Dry: ×1.0
Dry surface factor = ×1.0
Corrected Landing Ground Roll
Base × All Factors
600 × 1.25 × 1.10 × 0.81 × 0.94 × 1.00 × 1.0 = 634 ft
Total Over 50 ft Obstacle
Ground Roll × 1.67 (approach + flare + roll)
634 × 1.67 = 1,059 ft