CSV header mapper
Rename spreadsheet column headers to match an import template.
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CSV header mapper
Adapt a spreadsheet export to another application's column naming requirements. Supply a mapping from existing headers to expected headers, then review the renamed CSV. Data rows stay in place while the column labels change.
How to use this tool
- Choose a file, drag it into the upload area, import a public file URL, or paste your text below the upload options.
- Review the settings and create your result.
- Download and check the output before using it.
Supported input formats
CSVTSVTXT
Output and limitations
Rename spreadsheet column headers to match an import template.
Map exact old names to new names. Unmapped columns stay unchanged. Unknown source names and duplicate or blank output headers are rejected. Upload a UTF-8 file up to 5 MB or paste up to 12,000 characters. An uploaded file takes priority. Up to 10,000 rows and 100 columns. Formula-like spreadsheet cells receive a protective apostrophe.
Where are my files processed?
Selected files are processed in your browser. Importing a URL uses the download service to retrieve the remote file.
What if processing fails?
Check the supported formats and file limits, then try a smaller file. Keep an original copy. A clear error message will explain an unsupported input or an unavailable processing service.