Sentence Case Converter — Free Online
Rescue text that arrived in ALL CAPS or with random capitalisation. This converter lower cases everything, then capitalises the first letter of each sentence and the pronoun “I”, which is what you normally want for body copy. It updates live as you paste.
How to use the sentence case converter
- Paste the text you want to fix into the first box.
- Sentence case is applied straight away — check the preview below.
- Copy the cleaned-up version out.
When sentence case is the right choice
Sentence case — one capital at the start, everything else lower unless it is a name — is the default for body copy, meta descriptions, form labels, button text, email subject lines and support documentation. It is easier to read at small sizes than title case because the varying letter shapes give the eye more to grip, and most modern design systems have standardised on it for interface text for exactly that reason.
The most common job this tool gets used for is rescuing text that arrived in the wrong case: a paragraph pasted out of a PDF in full capitals, a spreadsheet column exported in caps, or a comment someone typed with caps lock on. Converting to sentence case restores something readable in one step instead of retyping it.
What a converter cannot know
Capitalisation of proper nouns is a judgement no rule can make reliably. When text arrives as “PARIS IN THE SPRING WITH SARAH”, nothing in the string marks Paris and Sarah as names, so a sentence case conversion returns “Paris in the spring with sarah” at best and “paris in the spring with sarah” at worst. Skim the result for names, places, brands, months and the pronoun “I” before you publish it.
Sentence boundaries are the other soft spot. A capital is placed after a full stop, question mark or exclamation mark, which means abbreviations such as “Dr.” or “e.g.” can trigger a capital in the middle of a sentence. Both quirks are quick to fix by eye and far quicker than retyping the paragraph.
Frequently asked questions
- How do I convert text to sentence case online?
- Paste into the box. This sentence case converter capitalises the start of each sentence and restores “I” automatically.
- How do I fix ALL CAPS text for free?
- Paste the shouty text here. Sentence case (or lowercase then sentence case) turns ALL CAPS into readable prose.
- How does the tool know where a sentence ends?
- It capitalises after ., ? or ! followed by a space, and after line breaks. Abbreviations like “e.g.” can occasionally force an extra capital — skim long text.
- Will proper nouns be lowercased?
- Yes — no tool can reliably detect every name. Restore names manually after converting to sentence case.
- Sentence case vs title case?
- Sentence case for body copy. Title case for headlines. Use this page when you need sentence case online.
- Is the sentence case converter private?
- Yes. Text never leaves your browser — useful for emails and confidential drafts.
- Can I undo Caps Lock text in bulk?
- Paste the whole block at once. Converting Caps Lock or ALL CAPS to sentence case is instant locally.
- Does it work for non-English text?
- It uses Unicode-aware casing. Always proofread languages with special capitalisation rules.
- Should FAQs use sentence case?
- Usually yes — sentence case reads naturally for answers and support copy.
- Is this fix ALL CAPS tool free?
- Yes — free sentence case converter, no signup, no upload.
Related tools
- Title Case ConverterPaste a heading and get properly capitalised title case back as you type.
- Lowercase ConverterStrip every capital from your text in one step.
- Uppercase ConverterPaste any text and get it back in capitals, ready for headings, labels or spreadsheet columns.
- Remove Line Breaks From TextText copied from a PDF, email client or terminal often arrives broken into short hard-wrapped lines.
Runs entirely in your browser — your files never leave this device. Last reviewed July 29, 2026.