ToolRobinNo account needed

Case Converter

Change letter case while keeping a separate copy of your original.

Paste or choose an input, select options and process it locally. Review the result before copying or downloading.

Options

Up to 100,000 UTF-16 code units. Unicode casing can change text length. Sentence and word capitalization use simple rules; they do not recognize names or editorial title style.

How to use

What does this tool do?

Change letter case for headings, labels or pasted notes. The tool applies simple Unicode rules; it does not identify names or choose an editorial title style.

Case Converter

Change letter case for headings, labels or pasted notes. The tool applies simple Unicode rules; it does not identify names or choose an editorial title style.

Step by step

  1. Paste or choose an input, select options and process it locally. Review the result before copying or downloading.
  2. Use uppercase for a label, lowercase for a normalized list, or sentence case for short prose. Capitalize words changes every word, including small connecting words.

Choosing the settings

OptionWhat changes
OptionsUse uppercase for a label, lowercase for a normalized list, or sentence case for short prose. Capitalize words changes every word, including small connecting words.
LimitsUp to 100,000 UTF-16 code units. Unicode casing can change text length. Sentence and word capitalization use simple rules; they do not recognize names or editorial title style.

Example and expected result

Hello, ToolRobin! → HELLO, TOOLROBIN! in uppercase mode. The number 42 stays 42.

If it is not working

  • Try a shorter selection if the input exceeds 100,000 UTF-16 units. Some emoji use two units; Unicode uppercase can expand one letter into several.

Formats and limits

Up to 100,000 UTF-16 code units. Unicode casing can change text length. Sentence and word capitalization use simple rules; they do not recognize names or editorial title style.

FAQ

What does this tool do?

Change letter case for headings, labels or pasted notes. The tool applies simple Unicode rules; it does not identify names or choose an editorial title style.

Which setting should I choose?

Use uppercase for a label, lowercase for a normalized list, or sentence case for short prose. Capitalize words changes every word, including small connecting words.

What are the limits?

Up to 100,000 UTF-16 code units. Unicode casing can change text length. Sentence and word capitalization use simple rules; they do not recognize names or editorial title style.

Why did processing fail?

Try a shorter selection if the input exceeds 100,000 UTF-16 units. Some emoji use two units; Unicode uppercase can expand one letter into several.

Is my input uploaded or saved?

No. Processing runs on your device. Inputs and results stay in this page’s memory until you clear it or leave. They are not uploaded, logged or stored by ToolRobin. Copying places the result on your device’s clipboard.

You might also need