Accidentally typed your text in the wrong case?
Simply drop your text below to quickly convert it into uppercase, lowercase, title case, sentence case, and other text formats using our free online case converter.
What is a sentence case converter?
A sentence case converter capitalises only the first letter of each sentence — exactly how you would type in a word processor. It is the go-to fix for text that arrived in ALL CAPS, random MiXeD cAsInG, or that was copied from a source with incorrect formatting.
Before & After
Before
THIS IS AN EXAMPLE SENTENCE. AND THIS IS ANOTHER ONE.
After
This is an example sentence. And this is another one.
Before
hELLO wORLD. tHIS iS rAnDoM cAsInG.
After
Hello world. This is random casing.
When to use sentence case
Body text & paragraphs
The default for all written prose — books, articles, emails, and documents.
UI microcopy
Tooltips, notifications, placeholder text, and error messages follow sentence case in most design systems (Google Material, Apple HIG).
Social media captions
Sentence case reads more naturally and conversationally in posts and captions.
Product descriptions
E-commerce product copy is written in sentence case for readability and brand tone.
Fixing inherited content
The fastest way to normalise CAPS LOCK or randomly capitalised legacy content.
Frequently asked questions
What is sentence case?
Sentence case capitalises only the first letter of the first word in each sentence, leaving all other words in lowercase (except proper nouns). It is the standard casing for body text, emails, and conversational writing.
What is the difference between sentence case and title case?
Sentence case capitalises only the first word of each sentence. Title Case capitalises the first letter of every major word. "The quick brown fox" is sentence case; "The Quick Brown Fox" is Title Case.
When should I use sentence case instead of title case?
Use sentence case for: body text and paragraphs, email body copy, social media posts, product descriptions, and interface microcopy (tooltips, notifications, error messages). Use title case for headings and titles.
Can this fix text that was typed in ALL CAPS?
Yes — paste the all-caps text and it converts to sentence case: first letter capitalised, everything else lowercase. It will not automatically detect proper nouns, so review after converting.
Does it handle multiple sentences?
Yes. The converter detects sentence boundaries (periods, exclamation marks, question marks) and capitalises the first letter of each new sentence in the block.
Does Google prefer sentence case or title case for page titles?
Google displays your page title as written. Most SEO practitioners use Title Case for page titles (H1 and meta title) and sentence case for meta descriptions and body content.
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