Upper case converter

An upper case converter turns every letter into capitals. That is lower case to upper case: headings that must shout, legal clauses, labels, and the occasional acronym block.

This is not the same as a capital case converter or proper case converter. Those names usually mean Capitalized Case (Start Case), where each word starts with a capital and the rest is lowercase. UPPER CASE is all caps.

What UPPER CASE is for

Use all caps when the medium expects it:

• Warning labels, legal disclaimers, and form field hints that must not be missed
• Acronym blocks and constants you will later reshape into SCREAMING_SNAKE
• Matching a house style that still uses all-caps section banners

Avoid UPPER CASE for long paragraphs — it is harder to read and looks like shouting in email and chat. Prefer Sentence case for body copy and Title Case for publication headlines.

Lower case to upper case converter

Paste mixed or lowercase text. Locale-aware uppercase maps Turkish i → İ and German ß → ẞ. Numbers, emoji, and line breaks stay put. That is the same job as “convert lower case to upper case,” “all caps converter,” and “change to capital letters” when people mean every letter, not Start Case.

Example: café déjà-vu → CAFÉ DÉJÀ-VU (accents kept; only case flips). With German locale, straße → STRAẞE.

Uppercase in Word, Excel, and Google Docs

Word: select text → Home → Change Case → UPPERCASE. Shift+F3 cycles lowercase / Title-ish / UPPERCASE. Fine for a sentence already in a .docx; slow for a whole export living in email or a ticket.

Excel: =UPPER(A1) and fill down, then paste values if you need static text. Correct for a sheet you will keep; awkward for a one-off list.

Google Docs: Format → Text → Capitalization → UPPERCASE. Same limitation as Word for bulk text that is not already in the document.

When the text is outside those apps, paste into this upper case converter, copy the result, and paste back. Nothing is uploaded.

How to use this page

1. Paste the text (or drop a .txt file) into the editor.
2. Confirm the mode is UPPER CASE and pick a locale if you need Turkish or German rules.
3. Copy or download the result. Use Undo, or open the lower case converter, to reverse the pass.

Need headlines instead of shouting? Switch to Title Case (AP / APA / Chicago / MLA) or Capitalized Case. Need calm prose? Use Sentence case. To undo Caps Lock disasters, convert uppercase to lowercase — and see how to convert uppercase to lowercase online for Word and Excel walkthroughs. For letter-by-letter play, try alternating case or inverse case.