Text & Language Case Converter – InternetAiTools.com

Text Case & Language Converter – InternetAiTools.com | UK English Default

Text Case & Language Converter UK English Default

InternetAiTools.com · UPPER · lower · Title · British - American (400+ words) — UK spell checker ready

GB
UK English Spell Checker Active — Your browser will highlight misspelled words using British English dictionary.
Chrome: Right-click text -> Spell check -> English (United Kingdom) Firefox: Right-click -> Languages -> English (United Kingdom) Edge: Settings -> Languages -> Add British English
INPUT TEXT (UK English spell checker enabled)
Words: 0 Characters: 0 Lines: 0
UPPERCASE
HELLO WORLD
lowercase
hello world
Title Case
Hello World
British -> American
colour -> color
American -> British
color -> colour
OUTPUT - British -> American English
No mode
Words changed (spelling differences)0 changes
No spelling changes detected
[UK]
400+ spelling differences · UK English baseline — Convert between British and American English. Change log shows every conversion.
Frequently asked questions
How do I enable UK English spell checker? ▼
Your browser's spell checker language is controlled by your system/browser settings. For Chrome: Right-click in the text area -> Spell check -> English (United Kingdom). For Firefox: Right-click -> Languages -> Add Dictionaries -> English (United Kingdom). Once set, misspelled words will show red underlines using UK dictionary.
Which English variant is the default for this tool? ▼
UK (British) English is the default reference spelling. The converter can seamlessly transform text between British and American English, and the input field is set to use UK spell checking (lang="en-GB").
How many spelling differences are supported? ▼
Over 400 common British - American spelling variants: -our/-or (colour/color), -ise/-ize (organise/organize), -re/-er (centre/center), double consonants (travelling/traveling), and many more.
What's the difference between Title Case and others? ▼
Title Case capitalizes the first letter of every major word (headlines, article titles). Lowercase = all small, UPPERCASE = all caps.
Will it incorrectly change already correct words? ▼
No. The converter only changes exact matches from the dictionary. "color" stays "color" in US mode; "colour" becomes "color". The change log shows every modified word.
How to track what changed? ▼
The "words changed" panel appears during language conversion, showing original word -> new word and occurrence count.

Free Text Case & English Spelling Converter — UK English as Default

Instantly convert any text between UPPERCASE, lowercase, and Title Case. Perfect for cleaning up messy text, formatting headlines, or standardizing documents. The built-in British - American English converter handles 400+ spelling differences including -our/-or (colour/color), -ise/-ize (organise/organize), -re/-er (centre/center), and double consonants (travelling/traveling). The change log shows exactly which words were transformed. This tool uses British English as the foundational dictionary.

The input field is configured with lang="en-GB" to enable your browser's UK English spell checker. Simply set your browser's spell check language to English (United Kingdom) for accurate red underline suggestions on misspelled UK English words. Use the Swap button to send converted text back to input. All processing happens locally in your browser — complete privacy.

400+ word dictionary · Real-time stats · Mobile-optimized · UK English default · InternetAiTools.com
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