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Tools / Case converter

Case converter

Converts between the nine cases people actually need, including the programmer ones. Title and sentence case re-lower shouted input rather than leaving it alone, and camelCase humps are detected when converting the other way.

Runs entirely in your browser

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About this tool

Switch text between the cases people actually need — sentence case, Title Case, UPPERCASE, lowercase, camelCase, snake_case, kebab-case and CONSTANT_CASE among them — including the programmer conventions. It is faster than retyping and avoids the mistakes hand-editing introduces.

It handles the details thoughtfully. Title and sentence case will re-lower text that was typed in all caps rather than leaving it shouting, and when converting out of camelCase it detects the “humps” to split words correctly. Those touches are what separate a useful converter from one that only works on already-clean input.

The conversion runs in your browser, so nothing is uploaded. Use it to tidy a heading, normalise a list, or reformat identifiers between the naming styles different languages and tools expect.

Frequently asked questions

Which cases can it convert between?
Common writing cases (sentence, title, upper, lower) and programmer cases (camelCase, snake_case, kebab-case, CONSTANT_CASE), so it covers both prose and code identifiers.
Does it fix text typed in all caps?
Yes. Title and sentence case re-lower shouted input rather than leaving it uppercase, producing correctly cased text.
Can it convert out of camelCase?
Yes. It detects the capital-letter boundaries in camelCase to split it into words correctly when converting to other cases.
Is my text uploaded?
No. Conversion runs in your browser, so nothing you enter is sent anywhere.
What is the difference between snake_case and kebab-case?
Both lowercase the words; snake_case joins them with underscores and kebab-case with hyphens. The tool produces either from the same input.

Enjoying Case converter?

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