> ## Documentation Index
> Fetch the complete documentation index at: https://calcs.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# How to subscribe to Calcs.com

> How to subscribe to Calcs.com

To subscribe to Calcs.com, you need to be an account administrator, and navigate to our [billing checkout page.](http://calcs.com/billing/change)

If you have any questions about this process, please contact us at [help@calcs.com](mailto:help@calcs.com), or give us a call on +1 303 309 9444 (USA/Canada) or +61 1300 846 800 (Australia).

On this page, you can select a plan type and length, as well as enter your credit card details to commence your subscription. On successful checkout, your account will be instantly upgraded and you will be sent an email invoice and be taken to a screen where you can view and modify your subscription moving forward.