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Every time I want to do conversion, I need to get into the console to run proj.4. Is there any online tools for converting coordinates between different EPSG?

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up vote 8 down vote accepted

This one's pretty handy: http://cs2cs.mygeodata.eu/

Also useful for batch conversions.

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this tool is really more handy~! How about including Z-axis conversion? –  Harold Chan Feb 21 '13 at 6:05
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To do a one-off projection, I usually use the geometry service on our ArcGIS Server's REST endpoint.

You could also use ArcGIS Online's Rest Endpoint, which is available here.

Here is a sample which shows how you can project from 4326 to 3857.

Please note that you need to comply with their Terms & Conditions.

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