Text & Spelling Converter
InternetAiTools.com · Case conversion + UK ⇆ US spelling (400+ words)
Frequently Asked Questions
Which English variant is the default for this tool?▼
UK (British) English is the default reference spelling. The converter transforms text between British and American English, with UK spelling used as the baseline dictionary.
How many spelling differences does this converter handle?▼
Over 400 common spelling differences between British and American English, including -our/-or words, -ise/-ize words, -re/-er words, double consonants, and other common variations.
What is the difference between Sentence case, Title Case and other modes?▼
Sentence case capitalizes only the first letter of each sentence. Title Case capitalizes the first letter of every major word, commonly used for headlines. Lowercase converts everything to small letters, and UPPERCASE converts everything to capital letters.
Will the converter change words that are already correct?▼
No, the converter only changes words that match its dictionary of known spelling differences. For example, it changes colour to color in US mode but leaves color unchanged. The changes list shows exactly which words were converted.
Does this tool handle grammatical differences?▼
This tool focuses on spelling differences only. Grammatical differences such as collective nouns or past tense forms like learned versus learnt are not automatically converted.
How do I track what changes were made?▼
When using UK → US or US → UK conversion, the changes list below the output shows every word that was converted, the replacement used, and how many times it appeared.
Free Text Case & Spelling Converter
Convert text instantly between Sentence case, UPPERCASE, lowercase, and Title Case, or standardize British and American English spelling across 400+ common word differences — colour/color, organise/organize, centre/center, travelling/traveling, and more. The changes list shows exactly what was converted, so nothing changes silently. Everything runs locally in your browser; your text is never sent to a server.
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