Free Online Uppercase and Lowercase Converter
Transform any text instantly: UPPERCASE, lowercase, Title Case, Sentence case, aLtErNaTiNg and Invert. With a real-time character counter.
The Office Tools case converter transforms any text in seconds: full UPPERCASE, full lowercase, Title Case, Sentence case, aLtErNaTiNg or Invert. Paste your text, choose a mode and copy the result. Includes real-time character, word and line counter. Available free on the Office Tools Starter plan.
How it works
Three steps and your text is transformed. No installations, straight from the browser.
Paste or type your text
Enter the text you want to transform in the text area. There is no length limit.
Choose a mode
Pick one of the 6 available modes: UPPERCASE, lowercase, Title, Sentence, aLtErNaTiNg or Invert.
Copy the result
The result appears instantly. Click Copy and paste it wherever you need.
6 transformation modes
From the classic all uppercase to the viral aLtErNaTiNg style. All available for free.
Converts all text to uppercase letters. Ideal for titles, banners or impactful text.
Converts everything to lowercase letters. Useful to normalise text accidentally typed in caps lock.
First letter of every word in uppercase. Perfect for document titles and presentations.
Only the first letter of each sentence in uppercase. The correct format for running text.
Alternates uppercase and lowercase letter by letter. The famous “mocking Spongebob” style.
Inverts the case of every character: uppercase becomes lowercase and vice versa.
Everything you need in a single tool
Fast, free and built for text in any language with a Latin alphabet. No fuss.
Instant
Transformation happens instantly, no waiting. All processing runs in your browser, no data is sent.
Free Starter plan
Available on the Office Tools Starter plan, completely free. Create your account in under a minute.
One-click copy
Direct copy-to-clipboard button. Paste the result into any app instantly.
Chainable
Apply a mode on top of the previous result to combine transformations sequentially.
Unicode and diacritics
Accents, ñ, ¡, ¿ and other special characters are handled correctly across every mode.
Real-time counter
See how many characters, words and lines your transformed text has, updated instantly.
Who uses the case converter?
A tool for every type of professional and student.
Designers and creatives
Format text for posters, logos and visuals without retyping every letter by hand.
Developers
Normalise strings, variables and constants for code projects without opening an editor.
Students and writers
Fix pasted text with the wrong capitalisation in seconds, not minutes.
Marketing professionals
Prepare copy, headlines and ad text with the right formatting for every channel.
Frequently asked questions
Everything you need to know about the converter.
There is no character limit. The tool runs locally in your browser and instantly, so it can handle very long texts without any issue.
Transform your text now
Available on the Starter plan, completely free. Create your account in seconds and start transforming text instantly.