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Convert between snake_case and camelCase instantly for APIs, JSON fields, and code variables.

Snake Case to Camel Case

Camel Case to Snake Case

What This Case Converter Is For

Convert Naming Styles for Code and Data

Use this case converter when field names need to move between APIs, databases, configuration files, and application code.

The common workflow is converting snake_case names from SQL or JSON payloads into camelCase names for JavaScript and TypeScript, then converting back when a service expects snake_case.

Useful Conversion Checks

  • Convert snake_case to camelCase before pasting API fields into frontend models.
  • Convert camelCase to snake_case when preparing database columns or backend payloads.
  • Normalize copied text before writing migration scripts, fixtures, or examples.
  • Review acronyms and initialisms manually because teams may prefer different casing rules.

FAQ

Which case formats are supported?

The tool supports snake_case and camelCase conversion in both directions.

Does it run locally in the browser?

Yes. Your text is processed in the browser without uploading to a server.

Will acronyms always match my code style?

Not always. Teams may write API, Api, URL, or Url differently, so review acronym-heavy output before committing generated names.

Can I convert multiple words at once?

Yes. Paste the text you want to normalize, choose the direction, and copy the converted result. For large code changes, review the output before replacing source files.

Convertisseur de casse - snake_case et camelCase en ligne | Unix Timestamp Converter