Case Converter API — Convert Text Between Different Letter Cases
Convert text between uppercase, lowercase, title case, sentence case, camelCase, snake_case, kebab-case, and more. Free API.
What is Case Conversion?
Case conversion transforms text between different letter casing conventions. The API supports uppercase (ALL CAPS), lowercase (all lowercase), title case (Each Word Capitalized), sentence case (First word capitalized), camelCase (camelCaseText), PascalCase (PascalCaseText), snake_case (snake_case_text), kebab-case (kebab-case-text), CONSTANT_CASE (CONSTANT_CASE_TEXT), and dot.case (dot.case.text).
How to Use It
Call GET /api/v1/case-converter?input=hello+world&case=title. Returns { input: string, output: string, case_type: string }.
Try it live
Test this endpoint in the interactive console
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Frequently Asked Questions
What case types are available?
uppercase, lowercase, title, sentence, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, and dot.case.