Cessna 172S Short Field Landing Distance Calculator

Pressure Altitude

Temperature

Headwind (enter negative for tailwind)

Runway Surface

Paved
Dry Grass

Flaps

Extended
Retracted

Ground Roll: 643 feet

50 Foot Obstacle Distance: 1443 feet

Landing Distance Numbers, (data used shown in red)

Ground Roll
Pressure Alt. (feet)	0°C	10°C	20°C	30°C	40°C
0	545	565	585	605	625
1000	565	585	605	625	650
2000	585	610	630	650	670
3000	610	630	655	675	695
4000	630	655	675	700	725
5000	655	680	705	725	750
6000	680	705	730	755	780
7000	705	730	760	785	810
8000	735	760	790	815	840

Total Distance Over 50 Foot Obstacle
Pressure Alt. (feet)	0°C	10°C	20°C	30°C	40°C
0	1290	1320	1350	1380	1415
1000	1320	1350	1385	1420	1450
2000	1355	1385	1420	1455	1490
3000	1385	1425	1460	1495	1530
4000	1425	1460	1495	1535	1570
5000	1460	1500	1535	1575	1615
6000	1500	1540	1580	1620	1660
7000	1545	1585	1625	1665	1705
8000	1585	1630	1670	1715	1755

Explanation of Calculation

This calculator uses data from the Cessna 172S POH, which assumes a weight of 2550 pounds, flaps set at 30 degrees, power off, maximum braking used, a paved, level, and dry runway, zero wind, and a speed of 61 KIAS at 50 feet.

First, data is interpolated from the temperature and pressure numbers given.

Next, headwind and tailwind is used to modify the previous calculations. For this calculator, distances are decreased by 10% for each 9 knots of headwind, and distances are increased by 10% for each 2 knots of tailwind.

If a grass runway is selected, the ground roll is increased by 45%, and that increase is then added into the total value.

Finally, the distances are increased by 35% if the option of flaps retracted is selected.

Disclaimer

This calculator is intended to be used for demonstration purposes only to aid in understanding how takeoff and landing calculations are made. This calculator should never be used as a replacement to required performance calculations.