Cessna 172N Performance data

	Density altitude
Sea level @ 59°F 15°C	2500ft @ 50°F 10°C	5000ft @ 41°F 5°C	7500ft @ 32°F 0°C
Gross weight (lb)	IAS at 50ft	Head wind (mph)	Ground run	To clear 50ft obstacle	Ground run	To clear 50ft obstacle	Ground run	To clear 50ft obstacle	Ground run	To clear 50ft obstacle
1700	60	0	435	780	520	920	625	1095	765	1370
10	290	570	355	680	430	820	535	1040
20	175	385	215	470	270	575	345	745
2000	65	0	630	1095	755	1325	905	1625	1120	2155
10	435	820	530	1005	645	1250	810	1685
20	275	580	340	720	425	910	595	1255
2300	70	0	865	1525	1040	1910	1255	2480	1565	3855
10	615	1170	750	1485	920	1955	1160	3110
20	405	850	505	1100	630	1480	810	2425

Take-off distance calculator

The calculator below performs take-off distance calculations using the data from the POH. It works by calculating the density altitude (using the pressure, temperature, dew-point and airfield elevation), then interpolating between the data points in the table. The answer it gives is the Take-off Distance Required (TODR) - i.e. the distance needed to reach a height of 50 feet.

Take-off distance calculator
Aircraft gross weight (lb):
Airfield elevation (feet):
Pressure (mb):		above sea level above airfield
Temperature (°C):
Dew point (°C):
Headwind (knots):
Runway surface:
Runway slope (%):		uphill downhill
	Use 1.33 safety factor

Density altitude (feet):
Take-off distance TODR (m):

Important safety note: Please use this calculator only for dispatch takeoff performance calculations, pilot should be aware that this calculator is specific to C172N. For actual performance, you must use the data taken from the POH of aircraft or other approved sources.