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Change Header Case

Free tool to change the case of CSV header names to snake_case, kebab-case, camelCase and more, in your browser.

Learn more: CSV Files ExplainedThe CSV format, RFC 4180 quoting rules, encodings, common pitfalls, and how CSV compares to TSV, JSON and Parquet.

Case

CSV

Result

Runs entirely in your browser — nothing you enter is uploaded or stored.

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Change Header Case

Free tool to change the case of CSV header names to snake_case, kebab-case, camelCase and more, in your browser.

Paste your CSV on the left and the result is produced instantly on the right — entirely in your browser. Your data never leaves the page, which you can confirm from the Network panel or our privacy policy.

Frequently asked questions

How do I use the Change Header Case?

Paste or upload your CSV on the left, set the options, and the result appears on the right — copy or download it. Everything runs in your browser.

Is my data uploaded anywhere?

No. This tool runs entirely in your browser — your CSV is never sent to a server. You can verify it in the Network tab or in our Content-Security-Policy.

Is the Change Header Case free?

Yes — completely free, no sign-up and no limits. Everything happens client-side.

Change Header Case

Frequently asked questions

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