Text Case Converter — UPPERCASE, camelCase, snake_case & more

Smart word splitting recognises whatever shape the input arrives in — camelCase, snake_case, kebab-case, dot.case, or plain whitespace — so you can paste a JavaScript variable and copy the same name as a Python identifier, an environment-variable key, or a CSS class. All conversion runs in your browser; nothing is uploaded.

How to convert text case — 4 steps

1. Paste any text. A phrase, sentence, variable name, or heading — the converter splits it into words automatically.
2. Read every case at once. Twelve panels update in real time as you type — no conversion button to click.
3. Copy the case you need. Each panel has a one-click copy button — perfect for pasting into code, docs, or terminal commands.
4. Iterate. Tweak the input and watch every output refresh instantly. The conversions are pure functions — same input, same output, every time.

Sample input and output

Input: "Open Formatter Text Case Converter"

UPPERCASE       → OPEN FORMATTER TEXT CASE CONVERTER
lowercase       → open formatter text case converter
Title Case      → Open Formatter Text Case Converter
Sentence case   → Open formatter text case converter
camelCase       → openFormatterTextCaseConverter
PascalCase      → OpenFormatterTextCaseConverter
snake_case      → open_formatter_text_case_converter
kebab-case      → open-formatter-text-case-converter
CONSTANT_CASE   → OPEN_FORMATTER_TEXT_CASE_CONVERTER
dot.case        → open.formatter.text.case.converter

Re-paste any output as input and the converter resplits it — round-trip safe between every case.

Common use cases

• check_circleRenaming a variable across the camelCase / snake_case / kebab-case boundary
• check_circleGenerating an environment-variable key (DATABASE_URL) from a config name
• check_circleProducing a URL slug (kebab-case) from a blog post title
• check_circleConverting a database column (snake_case) into a JSON field (camelCase)
• check_circleDrafting a Title Case heading from sentence-case copy
• check_circleReformatting CONSTANT_CASE config keys into PascalCase enum values
• check_circleAuditing a file for inconsistent identifier casing
• check_circleQuickly producing every case for a brand or product name

Naming conventions by language