This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Natao arisiva ity resaka mitohy ity. Mametraha fanontaniana azafady raha mila fanampiana.

Headers and footers are in inches we use mm how do I change this

  • 1 valiny
  • 1 manana an'ity olana ity
  • 1 view
  • Valiny farany nomen'i Wesley Branton

Erik-the-Viking
Erik-the-Viking
more options

When printing invoices from ebay I use pre printed paper and with Win 10 and Firefox v 66.05 64bit When changing the header/footer to align the print with the paper it is measured in INCHES - In the UK and EU/Canada/Australia etc we use the metric system so how do we change this to mm.

When printing invoices from ebay I use pre printed paper and with Win 10 and Firefox v 66.05 64bit When changing the header/footer to align the print with the paper it is measured in INCHES - In the UK and EU/Canada/Australia etc we use the metric system so how do we change this to mm.

All Replies (1)

Wesley Branton
Wesley Branton
more options

You can change the measurement units by doing the following:

  1. Type about:config in the Firefox address bar
  2. Bypass the security warning (yes, we will be careful)
  3. Search for print_paper_size_unit

Now you should see a list of each printer that you have installed on your system. To change the unit of measurement that is used, change the values from 0 (inches) to 1 (metric).

You will need to restart Firefox for the changes to be applied fully.

Hope this helps.