OneSpider Garage · Case Convert
Text Case Converter
Instantly convert text to uppercase, lowercase, camelCase, snake_case, and 26+ other formats. Free, no sign-up.
Why use Case Convert?
Converts as you type
No submit button. Results update in real time with zero delay.
20+ conversion tools
Basic cases, developer naming conventions, text formatting, and encoding — all in one place.
Runs in your browser
Your text never leaves your device. No servers, no logs, no account required.
All Tools
Every tool has a dedicated page with examples, a usage guide, and answers to common questions.
Basic Cases
UPPERCASE
Transform any text into UPPERCASE instantly.
lowercase
Convert any text to all lowercase letters instantly.
Sentence Case
Capitalize the first letter of each sentence automatically.
Capitalized Case
Capitalize the first letter of every single word.
Title Case
Apply grammatically correct Title Case to any text.
aLtErNaTiNg CaSe
Alternate between uppercase and lowercase for each character.
iNVERSE CaSe
Flip the case of every character — uppercase becomes lowercase and vice versa.
Developer Cases
camelCase
Convert text to camelCase for JavaScript variables and APIs.
PascalCase
Convert text to PascalCase for class names and React components.
snake_case
Convert text to snake_case for Python, Ruby, and databases.
CONSTANT_CASE
Convert text to CONSTANT_CASE for environment variables and constants.
kebab-case
Convert text to kebab-case for URLs, CSS, and HTML attributes.
dot.case
Convert text to dot.case notation for configs and namespaces.
path/case
Convert text to path/case format for file paths and URL routing.
Formatting
Remove Extra Spaces
Strip multiple spaces, leading/trailing whitespace from text.
Remove Empty Lines
Delete all blank lines from your text instantly.
Remove Duplicate Lines
Remove repeated lines, keeping only unique ones in original order.
Sort Lines A→Z
Sort all lines alphabetically in ascending order.
Sort Lines Z→A
Sort all lines in descending (reverse alphabetical) order.
Reverse Text
Reverse the order of all characters in your text.
Reverse Words
Reverse the order of words while keeping each word intact.
Reverse Lines
Reverse the order of lines — last line becomes first.
Encoding
Base64 Encode
Encode any text or binary data to Base64 format.
Base64 Decode
Decode Base64 encoded strings back to readable text.
URL Encode
Percent-encode text for safe use in URLs and query strings.
URL Decode
Decode percent-encoded URL strings back to readable text.
HTML Encode
Convert special characters to HTML entities for safe rendering.
HTML Decode
Convert HTML entities back to their original characters.
About Case Convert
Case Convert is a free text transformation tool by OneSpider Digital. It covers the full range of formats that developers and writers reach for every day — from UPPERCASE and Title Case for headings and titles, to camelCase and snake_case for code, to Base64 and URL encoding for data handling.
Every conversion runs entirely in your browser. There are no accounts, no file uploads, and no data sent to any server. Your text stays on your device at all times.