CSV cleaner

Paste messy CSV — the kind you get from copying a web page — and get a tidy version where numbers actually behave like numbers.

Messy CSV in

Clean CSV out

Free, no sign-up, no upload — this tool runs entirely in your browser.

What this fixes

Data copied off a web page almost never lands cleanly in a spreadsheet. The usual culprits:

Footnote markers — a value like 32,383,920[1] is text, not a number, so SUM quietly ignores it.
Thousands separators and currency symbols — $1,249.99 imports as text in most spreadsheets.
Stray whitespace — trailing and non-breaking spaces from HTML break exact matches and lookups.
Empty and duplicate rows — layout rows and repeated headers that came along for the ride.

Tick the fixes you want, paste your CSV, and copy out a version where the numbers actually add up.

Yes. Cleaning runs entirely in your browser — nothing is uploaded, stored, or logged.

Export any table on any web page to a clean CSV in one click. Free and unlimited — no row caps. One click to Google Sheets with Pro.