Can I convert dates in a CSV file?

Yes. Upload or paste a CSV file, confirm the date columns, choose an output format, and download a converted CSV.

Does my CSV upload to DataZier?

No. CSV parsing and date conversion happen on your device. Only paid access checks use DataZier's serverless access endpoints.

Yes. Choose Excel serial date input and select the Windows 1900 or Mac 1904 date system before converting your CSV.

Convert date columns in CSV files. Upload or paste CSV, confirm the detected date columns, choose the output format, and download a cleaned CSV.

Upload a CSV file .csv only, parsed locally

Paste CSV First row contains headers

Input format

Output format

Analyze a CSV to select columns.

Paste or upload CSV to detect date columns automatically.

Converted rows will appear here after you paste or upload CSV.

Converted CSV

Paste or upload a CSV to create a downloadable file. Your data stays on your device.