Capitalize the First Letter Instantly
For writers, developers, and students who need to fix lowercase sentence starts fast. Koala String Capitalize turns any string into properly capitalized text in one click — no manual editing, no typos, no signup.
Results update live as you type — no button needed. The Example button fills a sample input.
🔒 You've used your 20 free runs for today
Every tool is free up to 20 conversions a day. Get Pro — $4.99 one-time to unlock every tool with no daily limit.
💳 Buy Pro — $4.99 🔓 I have a code
Free runs reset at midnight (UTC).
Why use Koala String Capitalize?
Instantly capitalizes the first character of any string
Works with sentences, titles, code comments, and more
No installation or account required — runs in your browser
Clean, distraction-free interface for quick edits
Free and unlimited use for everyone
FAQ
What does this tool do exactly?
It capitalizes the very first letter of your input string and leaves the rest of the text unchanged. For example, 'hello world' becomes 'Hello world'.
Does it change the rest of the text?
No. Only the first character is converted to uppercase. All other letters, spaces, and punctuation stay exactly as you typed them.
Is this tool free to use?
Yes, Koala String Capitalize is completely free with no limits, no ads, and no account needed.
Can I use it for multiple sentences?
This tool capitalizes only the first letter of the entire string. For multiple sentences, run each sentence separately or use a dedicated sentence case tool.