Credit:
© 2010 Clément Ronzon
AGPL User satisfaction survey TWCC on Facebook RSS Feed

Options:

Mode:

Convention [?]:

Auto zoom:

Print the map: Print the map:

Full screen: Full screen:

length: -m
Area: -m2
Magnetic Declination = °
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1. Select the reference system of your data.

Next
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2. Select the destination reference system.

Next
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3. Enter your coordinates.

OR

Click on the map.

OR

Drag and drop the marker.

OR

Enter an address in the top search bar.

Next
Close

4. Push to convert your coordinates.

Finish!
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Convert

1. Search the Proj4js format on Spatial Reference:
Ex: European Datum 1950

Search!

2. Come-back and add the new reference system definition in TWCC:

Examples...
Add!

3. You use this system frequently?
Contact us and we will add it to TWCC permanently!

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What is TWCC?

TWCC, "The World Coordinate Converter", is an Open Source tool to convert geodetic coordinates in a wide range of reference systems.

Several coordinate conversion tools already exist, however, here is what makes the strength of TWCC:

TWCC was created by Clément Ronzon following research and development carried out for GrottoCenter.org.

Special thanks to: Roland Aigner, Alessandro Avaro, Leszek Pawlowicz, Lê Viết Thanh.

For any questions or suggestions please contact us.

You can donate to support this initiative.

User satisfaction survey

Contact us

We need your help!

We rely on the generous support of TWCC users to continue maintaining and improving this free web site.
Your money can make a difference and support the fund today.

How we plan to use funds:

Thank you donors!
List of the last five donors:
  1. Roberto Beccaria
  2. Philippe Henry
  3. Albert Haffner
  4. Ungeheuer Books
  5. Petr Simon

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Credit: International Association of Oil & Gas Producers (OGP)