MapTron - Longitude Resolution (distance) for Tabulated Latitudes

Reference - Longitude Resolution (distance) for Tabulated Latitudes

Lat-Lon Resolution Table
Longitude Angle Measure					Longitude Distance At Sea Level
Deg Min Sec	Dec Deg	Arcseconds	Radians		@ 0° lat		@ 30 ° lat		@ 45 ° lat		@ 60 ° lat		@ 75 ° lat
dd° mm’ ss”	DEG	ARCS	RAD		km/m	mi/yd	km/m	mi/yd	km/m	mi/yd	km/m	mi/yd	km/m	mi/yd
360° 0’ 0”	360.000000°	1296000	6.2832	2π	40075km	24901mi	26717km	16601mi	20038km	12451mi	13358km	8300mi	6679km	4150mi
180° 0’ 0”	180.000000°	648000	3.1416	π	20038km	12451mi	13358km	8300mi	10019km	6225mi	6679km	4150mi	3340km	2075mi
90° 0’ 0”	90.000000°	324000	1.5708	π/2	10019km	6225mi	8407km	5224mi	6679km	4150mi	4610km	2864mi	2348km	1459mi
60° 0’ 0”	60.000000°	216000	1.0472		6679km	4150mi	5713km	3550mi	4610km	2864mi	3223km	2003mi	1655km	1029mi
45° 0’ 0”	45.000000°	162000	0.7854	π/4	5009km	3113mi	4309km	2678mi	3495km	2172mi	2456km	1526mi	1266km	786mi
30° 0’ 0”	30.000000°	108000	0.5236		3340km	2075mi	2884km	1792mi	2348km	1459mi	1655km	1029mi	855km	531mi
22° 30’ 0”	22.500000°	81000	0.3927	π/8	2505km	1556mi	2166km	1346mi	1765km	1097mi	1246km	774mi	644km	400mi
15° 0’ 0”	15.000000°	54000	0.2618		1670km	1038mi	1445km	898mi	1179km	733mi	833km	518mi	431km	268mi
11° 15’ 0”	11.250000°	40500	0.1963	π/16	1252km	778mi	1084km	674mi	885km	550mi	625km	389mi	324km	201mi
10° 0’ 0”	10.000000°	36000	0.1745		1113km	692mi	964km	599mi	787km	489mi	556km	346mi	288km	179mi
1° 0’ 0”	1.000000°	3600	0.0175		111km	69mi	96.41km	59.90mi	78.71km	48.91mi	55.66km	34.59mi	28.81km	17.90mi
0° 30’ 0”	0.500000°	1800	0.0087		55.66km	34.59mi	48.20km	29.95mi	39.36km	24.46mi	27.83km	17.29mi	14.41km	8.95mi
0° 6’ 0”	0.100000°	360	0.0017		11.13km	6.92mi	9.64km	5.99mi	7.87km	4.89mi	5.57km	3.46mi	2.88km	1.79mi
0° 1’ 0”	0.016667°	60	0.0003		1.86km	1.15mi	1.61km	1.00mi	1.31km	0.82mi	927.7m	1014.5yd	480.2m	525.2yd
0° 0’ 36”	0.010000°	36	0.0002		1.11km	0.69mi	964.1m	1054.3yd	787.1m	860.8yd	556.6m	608.7yd	288.1m	315.1yd
0° 0’ 30”	0.008333°	30	0.0001		927.6m	1014.5yd	803.3m	878.6yd	655.9m	717.3yd	463.8m	507.2yd	240.1m	262.6yd
	0.001000°	3.6			111.3m	121.7yd	96.4m	105.4yd	78.7m	86.1yd	55.7m	60.9yd	28.8m	31.5yd
0° 0’ 1”	0.000278°	1			30.9m	33.8yd	26.8m	29.3yd	21.9m	23.9yd	15.5m	16.9yd	8.0m	8.8yd
	0.000100°	0.3600			11.1m	12.2yd	9.6m	10.5yd	7.9m	8.6yd	5.6m	6.1yd	2.9m	3.1yd
	0.000010°	0.0360			1.1m	1.2yd	1.0m	1.0yd	0.8m	0.9yd	0.6m	0.6yd	0.3m	0.3yd
	0.000001°	0.0036			0.1m	0.1yd
0° 0’ 0”	0.000000°	0.0000	0.0000		0.0m	0.0yd	0.0m	0.0yd	0.0m	0.0yd	0.0m	0.0yd	0.0m	0.0yd

The above table displays the longitude resolution (distance along the ground) at tabulated latitudes. The data is shown at different degrees of longitude. The calculator below may be used to find distances at angles not tabulated in the above table.

Distances are measured at several latitudes parallel to the equator. The equator is zero degrees latitude. Resolution along meridian lines (0 to 90 deg lat) do not change and is the same as longitude distances calculated along the equator. Calculations are performed at sea level.

This chart was derived from the great circle formula and assumes earth as a perfect sphere with an equatorial radius of 6378.14 kilometers. The planet is not a perfect sphere and actual distances will vary from the above chart.

Unit abbreviations:
km - Kilometers
m - Meters
mi - Miles, statue
yd - Yards

Linear Resolution Calculator
Use this tool to calculate the linear resolution for Lat-Lon angles not in the above chart. Enter decimal degrees and press the calculate button.
dec deg

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