about SPEAR

Web Applications

Click a button below to start an application
Click here to start the SPEAR Calculator!

The New SPEAR Calculator has been completly redesigned, but you can still start the old version here.
Click here to start the TU Calculator!

In case you have problems using a software, read our system recommendations.

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System recommendations

Our Web Applications were successfully tested with the browsers listed below.
We always recommend to use the latest version of a browser.

  • Firefox 2 (or later on Linux, Mac, Windows)
  • Safari 3 (or later on Mac, Windows)
  • Opera 9 (or later on Linux, Windows)
  • Google Chrome (on Linux, Windows)
  • Internet Explorer 7 (or later on Mac, Windows)


Problems with Internet Explorer

If you experience problems when using Internet Explorer (7 or later) try one of the other aforementioned browsers (recommended) or try to reset its security settings to default levels. Most problems reported were side effects of too restrictive settings.

  1. Choose Tools and then Internet Options in the Internet Explorer menu bar.
  2. Click on the Security tab and click Default Level or Reset all zones to default level button.
  3. Click OK.
  4. Close Internet Explorer and try again.
Please note, the procedure above might be slightly different depending on the version you are using!