Convert XLSX to CSV
Drop your XLSX, get a CSV. The file is processed in memory, returned with its SHA-256 fingerprint, then forgotten — nothing is kept on our servers.
1. Drop & Target Selection
2. API Format Matrix
curl -X POST https://api.convertchester.com/v1/convert \
-F "file=@document.xlsx" \
-F "to=csv"Files processed on-the-fly in RAM and discarded instantly.
Format verified from header bytes, never trusted from extensions.
Cryptographic hash provided for complete file auditability.
Exact same multipart response from browser or your backend.
Both formats
XLSX .xlsx
Excel workbook: multiple sheets, formulas, cell formatting.
CSV .csv
Comma-separated values: plain text, a single sheet, no formatting. The format databases and scripts read.
What this conversion changes
Going from XLSX to CSV is not neutral. What the service can tell you before you drop anything:
- An XLSX can carry several pages; a CSV carries one. Only the first is returned.
- CSV carries values only, on a single sheet: formulas, formatting and extra sheets are not carried over.
The same conversion, in one line
The browser and your backend call the same endpoint, and get the same response.
curl -X POST https://api.convertchester.com/v1/convert \
-F "file=@document.xlsx" -F "to=csv"Other conversions from XLSX
Other conversions to CSV
Is converting XLSX to CSV free?
Yes, in the browser and without an account. The API has a free quota; a refusal is never counted.
Are my files kept?
No. The file is processed in memory then forgotten. Logs carry only its SHA-256 fingerprint and its size — never its name or its content.
What happens if my file is not really a XLSX?
The format is read from the file’s bytes, never from its extension. An unrecognised file gets an explained refusal with a stable code — and that refusal is not billed.