How do I quickly change case in Microsoft Word?

Select the text and press Shift + F3 to cycle through UPPERCASE, lowercase, and Capitalize Each Word. Or use the Change Case button (Aa) on the Home tab for more options including Sentence case and tOGGLE cASE. It's much faster than retyping.

Is there one correct way to write Title Case?

No — it depends on the style guide. Most agree you capitalize the first and last words and all major words, and lowercase short articles and prepositions like "a," "the," "of," and "in." But guides like AP and Chicago differ on details (such as words of four-plus letters), so a title-case tool may not match your exact style.

How do I change case in Excel or Google Sheets?

Use the functions UPPER(), LOWER(), and PROPER(). For example, =PROPER(A1) capitalizes the first letter of each word in cell A1. There's no built-in Sentence case function, so that usually needs a formula combination or a quick paste into a case tool.

Why did pasting text turn everything into capitals?

The original text was probably typed with Caps Lock on or formatted as all-caps. If it's genuinely uppercase characters, converting to lowercase or Sentence case fixes it. If it only looks uppercase due to formatting (common in Word styles), changing the font's text-transform or clearing formatting restores the real case.

How to Change Text Case: Uppercase, lowercase, Title Case & Sentence case

Few things are as annoying as a headline typed IN ALL CAPS, or a list where someone forgot to capitalize. Retyping it is a waste — every major app can switch text between cases in a couple of clicks. Here’s how, in the tools you already use, plus a quick guide to what each case actually means.

The cases you’ll meet

UPPERCASE — every letter capital. Good for short emphasis, acronyms.
lowercase — no capitals. Common in modern branding and casual writing.
Sentence case — first letter of each sentence capitalized, like normal prose.
Title Case — Major Words Capitalized, for headings and titles.
tOGGLE / Capitalize Each Word — variations for specific needs.

Change case in Microsoft Word

The fastest trick on any keyboard:

Select the text.
Press Shift + F3 to cycle: UPPERCASE → lowercase → Capitalize Each Word.

For the full set, use the Change Case button (the Aa icon) on the Home tab, which adds Sentence case and tOGGLE cASE.

Change case in Google Docs

Select the text.
Format → Text → Capitalization.
Choose lowercase, UPPERCASE, or Title Case.

It covers the everyday options without any add-on.

Change case in Excel / Google Sheets

Spreadsheets use functions rather than menus:

=UPPER(A1)    →  MAKES IT ALL CAPS
=LOWER(A1)    →  makes it all lowercase
=PROPER(A1)   →  Capitalizes Each Word

There’s no built-in Sentence case function, so for that I usually paste the column into a case tool and paste the result back.

Change case in the browser

For text from anywhere — an email, a CMS, a chat — a browser-based case converter is the quickest path: paste, click the case you want, copy the result. A good one runs locally and offers Sentence and Title case alongside the basics, which spreadsheets and some editors lack.

Title Case isn't one rule

Different style guides capitalize titles differently. The common convention: capitalize the first and last words and all major words, and lowercase short words like a, an, the, of, to, in, and, but. AP and Chicago differ on the finer points (like whether to capitalize prepositions of four-plus letters), so always give a title a final human read against your chosen style.

”Why is my text stuck in capitals?”

Two different causes, two different fixes:

Real uppercase characters (typed with Caps Lock): just convert to lowercase or Sentence case.
All-caps formatting (a Word style or CSS text-transform): the underlying text is normal case but displayed as capitals. Clear the formatting or change the style — converting the case won’t help because the letters were never actually capitals.

Watch acronyms and names

Automatic conversion doesn’t know that “NASA” should stay uppercase or that “McDonald” has an internal capital. After any bulk case change, scan for acronyms, brand names, and proper nouns and fix them by hand.

Bottom line

In Word, Shift + F3 is the one shortcut worth memorizing. In Docs it’s Format → Text → Capitalization. In spreadsheets, UPPER/LOWER/PROPER. And for stray text from anywhere, a quick in-browser converter handles every case — just give titles and acronyms a final human check.