Join us at FabCon Atlanta from March 16 - 20, 2026, for the ultimate Fabric, Power BI, AI and SQL community-led event. Save $200 with code FABCOMM.
Register now!Calling all Data Engineers! Fabric Data Engineer (Exam DP-700) live sessions are back! Starting October 16th. Sign up.
Hello,
Im having an issue, i have a large dataset where the dates currently have the excel serial format. Is it possible to format this column to proper dateformat, perferably in the query?
It might also be relevant to say that the sourcefile is a .txt
Serial format/ Normal format
Br,
Johannes
Solved! Go to Solution.
In the Query Editor right click the Serial Date column header and Change Data Type to Date.
in Excel 1st date is 01-01-1900, so you could just add nr of days since then
e.g. use this code for new column
#date(1900,1,1)+#duration([Serial Date]-2,0,0,0)
EDIT Sean's answer is way simpler, I'd go with it
in Excel 1st date is 01-01-1900, so you could just add nr of days since then
e.g. use this code for new column
#date(1900,1,1)+#duration([Serial Date]-2,0,0,0)
EDIT Sean's answer is way simpler, I'd go with it
Both ways work, i managed to figure out ur proposed way before i had a chance to read the responses her 😛
Thanks for the assistance,
J
In the Query Editor right click the Serial Date column header and Change Data Type to Date.
Join the Fabric FabCon Global Hackathon—running virtually through Nov 3. Open to all skill levels. $10,000 in prizes!
Check out the September 2025 Power BI update to learn about new features.