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# How Monitoring Affects Your Bandwidth Usage

Every time your website is tested, the web page it tests is downloaded from your server just as if a normal user was downloading it. For this reason, monitoring your web site will consume some of the **bandwidth** that your hosting company allocates to your hosting plan.  
  
To calculate how much bandwidth monitoring your site will consume, use the following calculation:
  
*   Determine the HTML page size that is being tested by opening the page in a browser and viewing the file properties.
  
**Bandwidth usage in Gbytes = (file size in Kbytes / 1000000) x (60 / test interval) x 24 x 30  **

*   Here is an example of an average page size of 35 Kb which is being monitored at a 5 min interval:
  
**Bandwidth Usage = (35 / 1000000) x (60 / 5) x 24 x 30 Bandwidth Usage = 0.303 Gigabytes per month.  **
  
As you can see, this is a tiny fraction of the bandwidth that is typically allocated by your hosting provider. If for some reason you need to reduce this bandwidth, you can just choose to monitor your website at a slower test interval. For example, the same calculation above at a 20 min test interval would yield a bandwidth usage of just 0.075 Gbytes per month.