Can I integrate the form with Google AdWords conversion tracking?

You can add the Google AdWords tracking tag to the success message for the form that will track the conversion. For example, in Form Builder → Settings → General → Successful submit options → Message:

Your message has been sent, thanks.
<script type="text/javascript"> 
/* <![CDATA[ */
var google_conversion_id = 1234567890;
var google_conversion_language = "en_US";
var google_conversion_format = "1";
var google_conversion_color = "666666";
var google_conversion_label = "xxx-XXx1xXXX123X1xX";
/* ]]> */ 
</script>
<script type="text/javascript" 
src="//www.googleadservices.com/pagead/
conversion.js">
</script>
<noscript>
<img height=1 width=1 border=0 
src="//www.googleadservices.com/pagead/
conversion/1234567890/
?script=0">
</noscript>

Replace everything with your own success message and tracking tag you get from Google AdWords.