Free tool
Combine several CSV columns into one.
Join first and last name into a full name, or street, city, and postcode into one address line. Empty values are skipped so you never get doubled-up separators.
Everything runs in your browser. Nothing is uploaded.
Drop a CSV or Excel file here
Or choose a file — nothing leaves your browser.
Common questions
What happens when one of the fields is empty?
It is skipped, so joining 'x', '' and 'z' with a hyphen gives x-z rather than x--z.
What if my new column name already exists?
A numeric suffix is added rather than overwriting the existing column.
Is my file uploaded anywhere?
No. The file is parsed and processed entirely in your browser using JavaScript. It never leaves your device, and nothing is stored on our servers.