Case Converter
Convert text to sentence case, lowercase, uppercase, capitalized words, and title case instantly.
Common formats
Professional Title Styles AP, APA, MLA, and Chicago rules for headline-style capitalization.
Developer formats
Use these for code, URLs, file names, and identifiers.
More formats
0 words 0 characters
Converted locally in your browser. Nothing is uploaded.
What is a Case Converter?
A Case Converter changes text between common letter case formats such as sentence case, lowercase, uppercase, capitalized words, and title case. It helps writers, students, editors, and developers clean up text without retyping it.
How It Works
Change text case while you type
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Paste or type text
Add the text you want to clean up in the editor.
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Choose a case
Pick sentence case, lowercase, uppercase, capitalized words, or title case.
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Copy the result
Use the converted text anywhere without uploading it.
Features
Built for clean text case changes
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Instant conversion
The editor updates as soon as you type or switch case.
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Better title case
Uses common minor-word rules instead of capitalizing every word.
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Source-safe switching
Switch formats from the original text to avoid destructive conversion chains.
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Copy-ready output
Copy the current converted text with contextual button feedback.
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Browser-only processing
Text stays on your device while case conversion runs.
Frequently Asked Questions
Quick answers to common questions about using this tool.
Does this Case Converter upload my text? +
No. Case conversion runs in your browser during normal use. The text is not sent to PotatoTools.
What text cases can I convert? +
The tool supports common formats such as sentence case, lowercase, uppercase, capitalized words, title case, camelCase, PascalCase, snake_case, kebab-case, and CONSTANT_CASE.
Does title case follow real title rules? +
Yes. Professional title style modes use common minor-word rules so words such as and, of, or the are handled more carefully.
Can I switch formats without damaging the source text? +
Yes. The converter keeps the original source text and derives each selected format from that source.
Can I copy the converted result? +
Yes. Use the Copy action beside the editor to copy the current converted text.