https://www.infopathdev.com:443/forums/41.aspxIf you're not sure where to ask your question, ask it here. If necessary, our moderators will make sure it gets classified in the correct board.enCommunityServer 2007 SP3 (Build: 31118.962)https://www.infopathdev.com:443/forums/thread/125218.aspxWed, 25 Jan 2023 15:50:33 GMT033a2e2d-04e2-4a9d-be01-a4634161eefd:125218Hilary Stoupa0https://www.infopathdev.com:443/forums/thread/125218.aspxhttps://www.infopathdev.com:443/forums/commentrss.aspx?SectionID=41&PostID=125218Hi - this is surprisingly hard to do with InfoPath out of the box. However - you can find complex mathematical formulas for this online. Here is one blog post on this - I've not tried this specific one, but give it a shot. I would recommend trying it exactly as written in a test form prior to adding to your actual form: https://www.meartechnology.co.uk/2016/09/16/infopath-calculate-business-days-between-2-dates-including-leap-year/https://www.infopathdev.com:443/forums/thread/125217.aspxWed, 25 Jan 2023 10:18:20 GMT033a2e2d-04e2-4a9d-be01-a4634161eefd:125217yourluckycharm0https://www.infopathdev.com:443/forums/thread/125217.aspxhttps://www.infopathdev.com:443/forums/commentrss.aspx?SectionID=41&PostID=125217Hi All, May i asked your help i'm using infopath 2013, i need to make date difference calculation 5 business day on form without click submit button. i have start date and end date list. Right now i already do this calculation on sharepoint. but i need to make this calculation on form. Really appreciate your help !