
CSV to Excel
Clean .xlsx files with every zero, date and ID intact.
- North38%
- South32%
- West18%
- East12%
Examples
Four raw exports, four clean workbooks. Every zero, date and accent intact.
- North38%
- South32%
- West18%
- East12%
Order IDs and ZIP codes kept as text, dates read day-first, amounts typed as currency.
How it works

Upload the CSV
Drop in a CSV, TSV or text export from any system. Chatly detects the delimiter, the encoding and whether the first row is a header.

Check the column types
Each column gets a proposed type, text, number, date or currency, with a preview. Fix anything it read wrong before the conversion runs.

Download the .xlsx
You get an Excel workbook with typed columns, a frozen header row, filters and sensible widths. Ask for a pivot or a chart and it goes into the same file.
Features
Types read,not guessed
Learn more about types read, not guessedDates the rightway round
Learn more about dates the right way roundEncoding anddelimiters handled
Learn more about encoding and delimiters handledCleaningon request
Learn more about cleaning on requestSeveral files,one workbook
Learn more about several files, one workbookFormattedfor reading
Learn more about formatted for reading
Who it’s for
orders_q3.xlsxAll ordersABCDEFGHIJKLMN1OrderAbcZIPAbcDateDateRegionAbcCustomerAbcAmount$200412021393 Apr 2026NorthZoë Brandt$1,234.503004130703014 Apr 2026EastAna Muñoz$89.904004149411022 Apr 2026WestJun Park$412.00500415018012 May 2026NorthSøren Holt$76.25600416303019 May 2026SouthChloé Martin$1,050.00Revenue by region$3,4738 orders- North38%
- South32%
- West18%
- East12%
Pivot addedRevenue by region, same fileSystem and platform exports
Turn CRM, store or analytics exports into a workbook someone can filter and read without fixing the columns first.
orders_q3.xlsxLedgerABCDEFGHIJKLM1DateDateDescriptionAbcDebit€Credit€Balance€21 SepClient payment · Arden€2,400.00€6,600.0033 SepOffice rent€1,350.00€5,250.0048 SepSoftware, annual€480.00€4,770.00515 SepClient payment · Kiln€1,150.00€5,920.00622 SepPayroll€3,100.00€2,820.00Ready to reconcileDates and euros typedFinance and accounting files
Bank and ledger CSVs converted with currencies and dates typed correctly, ready for reconciliation.
orders_q3.xlsxPagesABCDEFGHIJKLM1PageAbcViews123Bounce%Signups123Conv. rate%2/42,18051%3880.9%3/pricing18,42034%6123.3%4/blog/csv-tips9,31022%410.4%5/signup6,97018%1,20417.3%Sent to the sales teamHeader frozen, filters onSharing data with non-technical teams
Send a clean Excel file with headers and filters instead of a raw CSV that opens as one long line of text.
Frequently asked questions
Why does my CSV look wrong when I open it in Excel?
Excel guesses each column's type on open, which strips leading zeros, reformats long numbers and misreads dates. Chatly sets the types explicitly before writing the .xlsx.
Is the CSV to Excel converter free?
Yes. There is a free plan available, and converting a CSV to .xlsx works on it.
Does it work with semicolon or tab separated files?
Yes. The delimiter is detected automatically, including semicolon, tab and pipe, and you can override it if the file is unusual.
Can I convert several CSV files at once?
Yes. Upload multiple files and choose one tab per file or a single merged sheet joined on a shared column.
Can I convert Excel back to CSV?
Yes. Any sheet in Chatly exports to CSV as well as .xlsx, with the encoding and delimiter you choose.

One prompt in.
Real work out.
Clean .xlsx files with every zero, date and ID intact.
Chatly on your phone and your Mac
Chatly for iPhone
Ask for the tracker on the train, check the columns, and open it from your phone. Every sheet you make here is on your phone.
Download on the App StoreChatly for Mac
Sheets on your desktop, with the exports and CSVs you already have to hand.
Download for macOS
