Tools
Sentence case converter
Capitalise only the first letter of each sentence, as in normal prose.
About this tool
Sentence case makes text read like ordinary prose: a capital at the start of each sentence and lowercase everywhere else. It is ideal for rescuing paragraphs typed in CAPITALS, tidying blog headings that someone wrote In Title Case, or cleaning product descriptions imported from a supplier. Many style guides, including the GOV.UK style guide, recommend sentence case for headings and buttons because it is easier to scan.
Paste your text and press “Convert to sentence case”. The tool lowercases everything, then capitalises the first letter of the text and the first letter after a full stop, question mark, exclamation mark or ellipsis followed by a space or line break. It also skips opening quotes and brackets, so “(hello. world)” becomes “(Hello. World)”. Copy the result with the button alongside, or undo with Ctrl+Z.
The text is transformed in your browser and never sent to a server. Bear in mind the tool cannot recognise names or acronyms: “London” or “BBC” will be lowercased unless they start a sentence, and abbreviations with full stops (“e.g.”) may trigger an unwanted capital. Check those words before publishing.
Frequently asked questions
What is the difference between sentence case and title case?
Sentence case capitalises only the first word of each sentence (plus proper nouns); title case capitalises most words. Sentence case is generally easier to read for longer headings.
Why has a name ended up in lowercase?
The converter doesn’t know which words are names. It lowercases everything and only restores the capital at the start of each sentence, so names need fixing by hand.
Does it treat line breaks as new sentences?
Only after a sentence-ending mark. A new sentence starts after . ! ? or … followed by a space or line break, so in a list without full stops only the first line is capitalised.
Does it handle accented letters?
Yes. It works with any Unicode letter, so “élan” at the start of a sentence becomes “Élan”.