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Coordinates conversion
Conversions of latitude and longitude geographic coordinates, in various formats (decimal, sexagesimals DD DM DMS) degrees minutes seconds. Useful in various activities of design to convert data for GPS (Global Positioning System) and trasforms units of measurement. You can also search the coordinates on map by clicking search icon (web page Earth coordinates).
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Contents
How To Convert from a Decimal to Sexagesimal
How To Convert from a Sexagesimal to Decimal
Format
Accuracy
Comment
References
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Contents
How To Convert from a Decimal to Sexagesimal
# You have decimal degrees (-73.9874°) instead of degrees, minutes, and seconds (-73° 59’ 14.64")# The whole units of degrees will remain the same (-73.9874° longitude, start with 73°)
# Multiply the decimal by 60 (0.9874 * 60 = 59.244)
# The whole number becomes the minutes (59’)
# Take the remaining decimal and multiply by 60. (0.244 * 60 = 14.64)
# The resulting number becomes the seconds (14.64"). Seconds can remain as a decimal.
# Take your three sets of numbers and put them together, using the symbols for degrees (°), minutes (’), and seconds (") (-73° 59’ 14.64" longitude)
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How To Convert from a Sexagesimal to Decimal
# You have degrees, minutes, and seconds (-73° 59’ 14.64") instead of decimal degrees (-73.9874°)# The whole units of degrees will remain the same
# Divide the seconds by 60 (14.64 / 60 = 0.244)
# Sum the resulting to the minute and divide by 60 (59.244 / 60 = 0.9874)
# The resulting is the decimal value of degrees (0.9874)
# Sum the degrees to the decimal using the symbols for degrees (°) (-73.9874°)
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Format
Value range
Valid value for the latitude are from -90.0° to 90.0° for the longitude are from -180.0° to 180.0°, the + sign should be omitted, while the minus sign is not necessary if there is a radio component to select the direction N-S or W-E (Degree and Decimal format).Decimal
You have to select a direction (N-S or W-E) and insert a number from 0 to 90 for the latitude or from 0 to 180 for the longitude (example 45.12345).Degree
Degree format is conposed of direction (N-S or W-E) and three sets of numbers separate by the symbols for degrees (°), minutes (’), and seconds (").Degree is a integer value without sign, from 0 to 90 for the latitude or from 0 to 180 for the longitude. Minute is a integer value without sign, from 0 to 59. Seconds is a double value without sign, from 0 (or 0.0000) to 59.9999 .
Coordinates
Coordinates format is the pair of latitude and longitude, with sign minus (-) for the direction south latitude and west longitude separate by comma simbol (,), here some example:52.5163 , 13.3779
40.7682 , -73.9816
-22.9708 , -43.1830
Search on map
Click on search
to open the webpage Earth Coordinate, here you obtain the latitude and longitude simply by clicking on the map, and save the value by the button save.back to Top
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Accuracy
Latitude and Longitude have the maximum error in the equator, because the earth' radius is maximum.The Earth is not a sphere, but an irregular shape approximating an ellipsoid. The accuracy of the longitude increases the further from the equator you get. The accuracy of the latitude remains almost unchanged.
The earth's radius et the equator is: 6378.160 km than the circunference is: (r*2*pi) 40075.1612 km, each degree is: (40075.1612 / 360) 111.319 km.
Precision choice is of 5 decimal place is accurate to 1.11 meter (+/- 55.5 cm) at the equator.
| places | decimal deg. | degrees | distance |
| 0 | 1.0 | 1°0’0" | 111.319 km |
| 1 | 0.1 | 0°6’0" | 11.131 km |
| 2 | 0.01 | 0°0’3.6" | 1.113 km |
| 3 | 0.001 | 0°0’0.36" | 111.3 m |
| 4 | 0.0001 | 0°0’0.036" | 11.13 m |
| 5 | 0.00001 | 0°0’0.0036" | 1.11 m |
| 6 | 0.000001 | 0°0’0.00036" | 11.1 cm |
| 7 | 0.0000001 | 0°0’0.000036" | 1.11 cm |
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Comment
If detected inaccuracies bug, want to suggest new features or simply express your opinion of the site web add a comment.Thanks in advance for your contribution to improve this site.
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References
http://en.wikipedia.org/wiki/Longitudehttp://en.wikipedia.org/wiki/Latitude
http://en.wikipedia.org/wiki/Geographic_coordinate_system
http://en.wikipedia.org/wiki/Wikipedia:Obtaining_geographic_coordinates
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