This sentence case converter capitalises the first letter of each sentence and lowercases the rest — turning HELLO THERE. HOW ARE YOU? into Hello there. How are you?. It is the fastest way to rescue text typed in ALL CAPS or with random, inconsistent capitalisation.
How to use the sentence case converter
- Paste the messy or all-caps text.
- It is rewritten so each sentence starts with a capital and the rest is lowercase.
- Copy the result and skim for proper nouns that need re-capitalising.
Rescue shouty or messy text
Emails typed in caps lock, product descriptions pasted from a spreadsheet, subtitles in all capitals — sentence case makes any of them read naturally again. It detects sentence boundaries at full stops, question marks and exclamation points, then capitalises the first letter that follows.
What it can and cannot do automatically
Sentence case reliably fixes sentence openers. It cannot always know which mid-sentence words are proper nouns — names, places, brands — or the standalone “I”, because that needs understanding of meaning. After converting, a quick read-through to re-capitalise those is usually all that is needed.