> For the complete documentation index, see [llms.txt](https://knowledge-base.letsgetdigital.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://knowledge-base.letsgetdigital.com/virtual-event/sustainability.md).

# CO₂ Calculator

Users can calculate their individual effective CO₂ savings based on attending the event remotely rather than at the physical location it would have otherwise taken place.

### How to setup the CO₂ Calculator (Event location)

Set up the CO₂ calculator using these simple steps:

1. Open the Admin panel
2. Go to Settings -> General settings -> Event Information
3. Enter the Event location
4. Save changes

### Users experience

When first logging into the virtual event users will be prompted to provide their current location, and the platform will calculate the CO₂ savings based on the distance they would have travelled to the event if it was in-person.

![](https://772941315-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M5LNCGpK5lyymcFZU4V%2F-Mci3AikdDydFNG1o_JY%2F-Mci3oPwiyQ7OIrGQH5c%2F2021-06-21_12-17-21.gif?alt=media\&token=be796178-b836-434f-90be-0f444f30e991)

### How are CO₂ savings calculated?

The calculation of distance is based on Google and in case Google can't calculate it well (so with flight distance) we make our own calculations based on [this formula](https://en.wikipedia.org/wiki/Vincenty%27s_formulae).

### How to disable the CO₂ Calculator

You can disable the CO₂ Calculator by completing these simple steps:

1. Open the Admin panel
2. Go to Settings -> Virtual event settings
3. Click on Show extra settings
4. Go to General -> Search for the option 'Add location tab to the popup for the co2 calculator'
5. Disable this setting


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