🔠 Capitalize Each Word Tool
By ToolNimba Text Team · Updated 2026-06-19
Type above and pick a mode to see the result.
Need a headline in title case, a paragraph with each sentence capitalized, or just the very first letter fixed? Paste your text, pick a mode, and this tool rewrites the capitalization instantly. It handles messy mixed-case input, lowercases the leftover letters when you choose title case, and gives you a clean result you can copy in one click. Everything runs in your browser, so your text is never uploaded anywhere.
What is the Capitalize Words?
Capitalization changes which letters are uppercase without touching the words themselves. The three jobs people usually want are different and easy to mix up. Capitalizing each word (often called title case) puts a capital at the start of every word, which suits headlines, titles, names and labels. Capitalizing each sentence is what normal prose needs: the first letter after the start, and after every period, question mark or exclamation mark, is uppercase while the rest stays as written. Capitalizing the first letter only touches a single character at the very start of the whole block, which is handy for a single field, a tag or a list item.
This tool treats a word as any run of non-space characters that follows a space or the start of the text, so hyphenated and punctuated tokens still get their leading letter capitalized. In title case mode it also lowercases the remaining letters of each word, which is why pasting a line that is already in all caps comes back as clean Title Case rather than staying shouted. Sentence mode walks through the text and flips the next real letter to uppercase after it sees sentence-ending punctuation, leaving spacing, numbers and symbols untouched.
A quick note on style: true editorial title case keeps small words like a, an, the, of and to lowercase unless they start the title. This tool uses the simpler and more predictable rule of capitalizing every word, which is the behavior most people expect from a quick converter and is easy to tidy by hand afterwards. For body text, sentence case is almost always the right choice because it reads naturally and is the standard for paragraphs.
When to use it
- Turning a typed-in-lowercase heading or product title into clean title case.
- Fixing a paragraph that was typed without capital letters so each sentence starts correctly.
- Capitalizing names, menu labels, button text or table headers consistently.
- Cleaning up text pasted in all caps by converting it to readable title or sentence case.
How to use the Capitalize Words
- Type or paste your text into the input box.
- Choose a mode: each word, each sentence, or first letter only.
- Read the converted text in the result box, which updates as you type.
- Click Copy to put the result on your clipboard.
Formula & method
Worked examples
You paste "the quick brown FOX" and choose the each word mode.
- The tool finds each word: "the", "quick", "brown", "FOX".
- It uppercases the first letter of every word.
- It lowercases the remaining letters, so "FOX" becomes "Fox".
- The pieces are rejoined with the original single spaces.
Result: The Quick Brown Fox
You paste "hello world. how are you? fine thanks!" and choose the each sentence mode.
- The first letter "h" is capitalized to "H".
- After the period and space, "how" gets its "h" capitalized to "H".
- After the question mark and space, "fine" gets its "f" capitalized to "F".
- Letters that are not at a sentence start stay exactly as typed.
Result: Hello world. How are you? Fine thanks!
The three modes compared on the same input "my name is ANNA. nice to meet you"
| Mode | What it changes | Result |
|---|---|---|
| Each word | First letter of every word, lowercases the rest | My Name Is Anna. Nice To Meet You |
| Each sentence | First letter of each sentence only | My name is ANNA. Nice to meet you |
| First letter only | First letter of the whole text only | My name is ANNA. nice to meet you |
Common mistakes to avoid
- Using title case for body paragraphs. Capitalizing every word in a paragraph is hard to read and looks unusual. Use sentence case for prose and save title case for headings, titles and short labels.
- Expecting editorial title case rules. This tool capitalizes every word, including small words like of, the and to. Style guides keep those lowercase in the middle of a title, so adjust them by hand if you need strict editorial style.
- Forgetting that title case lowercases the rest. The each word mode lowercases the remaining letters of each word, so an intentional acronym like NASA inside the text will become Nasa. Use sentence case or fix acronyms afterwards if you need them preserved.
- Assuming the first letter mode fixes sentences. First letter only changes a single character at the very start. If your text has several sentences, switch to the each sentence mode to capitalize every one.
Glossary
- Title case
- A style where the first letter of each word is capitalized, common for headings and titles.
- Sentence case
- A style where only the first letter of each sentence is capitalized, the standard for normal prose.
- Word
- In this tool, any run of non-space characters that follows a space or the start of the text.
- Sentence boundary
- A point in the text marked by a period, question mark or exclamation mark, after which the next letter is treated as a new sentence start.
- Uppercase
- The capital form of a letter, for example A as opposed to the lowercase a.
Frequently asked questions
What does the capitalize each word mode do?
It puts a capital letter at the start of every word and lowercases the remaining letters of each word, giving clean title case. For example, "the quick brown fox" becomes "The Quick Brown Fox" and an all caps line is converted to Title Case too.
How is sentence case different from title case?
Sentence case capitalizes only the first letter of each sentence, which is how normal paragraphs are written. Title case capitalizes the first letter of every word, which suits headings and titles but is hard to read in long text.
Does the tool keep my acronyms in capitals?
In the each word and first letter modes the rest of each word is lowercased, so an acronym such as NASA can become Nasa. Use the each sentence mode, which leaves non-start letters untouched, or fix acronyms by hand after converting.
Will my text be sent to a server?
No. The whole tool runs in your browser using plain JavaScript. Your text never leaves your device, which makes it safe to use for private notes, drafts and sensitive content.
Can I capitalize just the first letter of the entire text?
Yes. Pick the first letter only mode and the tool capitalizes the first alphabetic character of the whole block while leaving everything else exactly as you typed it.
How do I copy the result?
Click the Copy button above the result box and the converted text is placed on your clipboard. You can then paste it anywhere. The result also updates live as you type or change the mode.