How to use CSV Encoding Converter
Convert text exports to UTF-8 with an optional Excel BOM.
- Choose the original encoding and review the decoded preview. Export as UTF-8 or UTF-8 with BOM. If the preview looks wrong, try the correct source encoding before downloading.
- Process the selected files, then inspect the preview, dimensions or warnings.
- Download a new copy and check it before replacing or sharing the original.
How processing works
TextDecoder decodes bytes using the source encoding you select. The decoded text is then saved as UTF-8, with an optional byte-order mark; this operation does not repair the table structure.
A quick example
Export UTF-8 with BOM to help Excel recognize accented characters.
Assumptions, edge cases & limits
- Choosing the wrong source encoding can produce plausible but incorrect characters.
- The tool writes UTF-8; it does not export arbitrary legacy encodings.
- Encoding detection is not certain. Characters already replaced by the replacement symbol cannot be recovered by conversion.
Questions about CSV Encoding Converter
How do I convert a Windows-1252 CSV to UTF-8 for Excel?
Choose Windows-1252 as the original encoding, inspect accented characters in the preview, then download UTF-8. The optional UTF-8 BOM can help compatible versions of Excel recognize the encoding.
Can changing encoding repair text that was already corrupted?
Not necessarily. If the wrong decoding was previously saved over the original, information may be lost. Return to the original byte file and choose its actual source encoding.
Are my files or inputs uploaded?
Calculation and file processing run in your browser without a processing upload. Downloads go to your device. Choosing a next-step transfer creates a temporary local copy for that workflow. Region preferences are stored separately from tool inputs. See our privacy details.
Can I use this tool for free?
Yes. No signup, subscription or payment is required to use the tool or download its output. File tools have device and size limits; a smaller batch may work better on a phone.
Method & references
Read the underlying method or measurement convention in context. These references do not imply affiliation or endorsement.
Microsoft: Opening UTF-8 CSV in Excel ↗Check the assumptions, measurement conventions and actual product or contract terms for your use case.A result or explanation needs correcting? Tell us the tool name and an example.