A messy spreadsheet in, a clean one out. Spacing, dates, phones and duplicates fixed in seconds, plus formulas explained in plain English.
Private: your spreadsheet never leaves your device.
No. The file is read, cleaned and rebuilt in your browser. If you use the AI formula helper, only your column names and your question are sent, never the data in your rows.
Extra spaces, empty rows and columns, duplicate rows, dates in mixed formats, phone number formats, lowercase emails, numbers stored as text, and optionally the capitalisation of names, cities and companies.
A coloured, bold header row, frozen so it stays visible, filter buttons, light shading on every other row, sensible column widths, and number formats for currency, percentages, dates and numbers.
Yes. Describe what you want, such as total revenue where Status is Won, and you get a formula with your real column letters plus a short explanation. It works in Excel and Google Sheets.
It reads .xlsx and CSV. Open an old .xls file and save it as .xlsx first. The cleaner keeps the values your formulas produced, not the formulas themselves.
We build business websites in 7 days and web apps in weeks, for a fixed price. Then we automate the busywork around them.
Book a free strategy callThe AI Excel Formatter cleans and formats a spreadsheet, explains what it contains and writes the formulas you need in plain English. Paste or upload your sheet, then copy the cleaned result.
Most tools here run inside your browser. The file is opened on your own device and the result is made there too, so it is never uploaded to our servers. That makes them safe for contracts, IDs, payslips and client files, and they keep working on slow connections because nothing large is sent. You also do not need to install software or create an account. Every tool saves a new copy, so your original file stays exactly as it was.
More free tools: see every tool.