Capitalize First Letter
Enter your text below. Choose an option to capitalize the first letter of each sentence or each word. The modified text will appear in the second box.
Capitalization Type
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Words
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Characters
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Lines
How to use Capitalize First Letter
- 1
Paste your text
Type or paste the text you want to fix into the input box.
- 2
Choose the mode
Pick whether to capitalize the first letter of each sentence or the first letter of every word.
- 3
Apply capitalization
Run the tool to instantly rewrite your text with corrected capital letters.
- 4
Copy the result
Copy the cleaned-up text to your clipboard and paste it wherever you need it.
Capitalizing First Letters: Sentence Case vs. Each Word
Two modes, two very different jobs
This tool offers a choice that smaller capitalizers do not: you can capitalize the first letter of each sentence, or the first letter of every word. They sound similar but solve opposite problems. Sentence mode is for fixing prose; word mode is for formatting titles and labels. Picking the right mode is the difference between a clean paragraph and a mangled one.
A quick mental test: if your text is made of sentences you want to read normally, choose sentence mode. If your text is a short heading, name, or label where every word should be capitalized, choose word mode. The stats panel below the boxes shows words, characters, and lines so you can confirm the tool processed everything you pasted.
How sentence mode works
Sentence mode capitalizes the first letter at the start of the text and the first letter after each sentence-ending mark, namely a period, question mark, or exclamation point. So "hello there. how are you? i'm fine!" becomes "Hello there. How are you? I'm fine!" Only the sentence openers were touched; the rest of each sentence keeps its original casing.
This is exactly what you need after dictation, voice-to-text, chat logs, or notes typed in a hurry, where words run together in lowercase. It restores readable capitalization without forcing you to retype anything, and it leaves your existing capitals and wording intact.
How word mode works
Word mode capitalizes the first letter of every word and leaves the remaining letters as they are. "annual sales report" becomes "Annual Sales Report." Unlike style-guide title case, it does not lowercase small words, so "the art of war" becomes "The Art Of War," with "of" capitalized too.
Reach for word mode when you are formatting a heading, a product name, a label, or a list of proper names and you want uniform capitalization. If you specifically need articles and short prepositions kept lowercase for a published headline, use the dedicated Title Capitalization tool instead, which applies AP, APA, and Chicago rules.
Sentence case vs. first-letter-only
It helps to separate two ideas. "First-letter-only" would capitalize just the very first character of the entire passage and nothing else, which is rarely useful for multi-sentence text. Sentence case goes further and capitalizes the opening of every sentence, which is what most people actually mean when they say "capitalize the first letter."
This tool's sentence mode is true sentence case: it walks through the whole passage and capitalizes after each terminal punctuation mark, not just at the very beginning. That is why it works on long passages and multiple paragraphs in a single pass.
What it cannot do: proper nouns
Neither mode understands meaning, so neither can capitalize proper nouns sitting in the middle of a sentence. Run sentence mode on "i visited paris with sarah in june" and you get "I visited paris with sarah in june." The sentence opener and the standalone "I" are handled, but "paris," "sarah," and "june" stay lowercase because the tool has no dictionary of names.
Plan for a quick review pass when your text contains names, cities, brands, or months. Fixing a few proper nouns by hand after an automatic pass is far faster than capitalizing every sentence opener yourself, and it avoids the over-capitalization you would get from word mode.
Worked example, both modes
Start with "meeting recap: budget is approved. next steps follow." In sentence mode you get "Meeting recap: budget is approved. Next steps follow." Notice the word after the colon was not capitalized, because a colon is not a sentence terminator here. In word mode the same input becomes "Meeting Recap: Budget Is Approved. Next Steps Follow."
Seeing both outputs side by side makes the choice obvious. Sentence mode preserves the flow of prose; word mode produces a title-like treatment. If neither looks right, your text probably needs the style-guide rules offered by the Title Capitalization tool.
Tips for accurate results
Before you run the tool, decide what your text is: prose or a label. That single decision picks the mode and prevents the most common mistake, which is running word mode on a paragraph and getting an awkward capital on every word. Use the stats line to confirm the line and word counts match what you pasted.
After running sentence mode, scan for proper nouns; after running word mode, scan for acronyms and brand names with internal capitals. A short visual check turns a good automatic result into a finished one, and it is the part no rule-based tool can do for you.
Frequently asked questions
Does it capitalize sentences or every word?
Will it change letters that are already capitalized?
Can it handle large blocks of text or multiple paragraphs?
Does it fix proper nouns like names and places automatically?
Is my text uploaded anywhere?
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