Looking for an available domain? This free domain name idea generator turns one keyword into 24 to 36 ready-to-check domain ideas in a second, no sign-up required. Type your keyword, choose a TLD focus (.com, .io, .co, .ai, or a mix), and the tool blends your word with curated prefixes and suffixes, appends the extension, and flags any name over 14 characters so you keep it memorable. Click Search availability on any idea to check it instantly.
Enter a keyword and pick the extension focus.
.com for the most trusted extension, .io or .ai for tech and AI brands, .co as a short alternative, or Mix to see your keyword across all four at once.The extension shapes how your domain is perceived and priced. Here is how the main options compare:
| TLD | Best for | Notes |
|---|---|---|
| .com | Almost everything | Most trusted and valuable; check it first, even if you also buy another |
| .io | Tech, SaaS, developer tools | Popular in startups; pricier than .com; well recognized in tech circles |
| .ai | AI, data, machine learning | Strong fit for AI products; premium pricing; growing fast |
| .co | Short alternative to .com | Reads as "company"; good fallback when the .com is taken |
The safe default is to secure the .com when you can, because visitors type it by habit and it carries the most trust. If the .com is gone, a short .io, .ai, or .co on a clean keyword is a solid choice. For a deeper look at extensions, see best domain extensions for business and our guide on what makes a good domain name.
The generator flags any domain whose label (the part before the dot) exceeds 14 characters. That number is a widely used best-practice line for memorability: shorter domains are easier to remember, type, and say aloud, and they suffer fewer typos. It is not a technical limit, the DNS allows up to 63 characters per label, but it is a practical one. A 9-character domain like getcloud.io beats a 22-character mouthful on every memorability test. When two ideas are otherwise equal, take the shorter one. Confirm exact counts with our domain name length checker.
This tool brainstorms; it does not register anything. The path from an idea to a domain you own is short:
Yes, it is completely free with no sign-up and no limit. It runs entirely in your browser, generating 24 to 36 domain ideas per run, and each idea links to an availability search so you can move from idea to registration quickly.
It takes your keyword and combines it with curated prefixes (get, try, go, my) and suffixes (hub, ly, app, hq, base), then appends the TLD focus you choose, whether .com, .io, .co, .ai, or a mix. Each candidate is shown as a full domain, deduplicated, with names over 14 characters flagged because shorter is more memorable.
The .com remains the most trusted and valuable extension, so start there. The .io and .ai extensions are popular for tech and AI startups, and .co is a common short alternative when the .com is taken. Use the mix option to see your keyword across all of these at once, then prioritize the .com if it is available.
Shorter domains are easier to remember, type, and say aloud, and they suffer fewer typos. The 14-character mark (for the part before the dot) is a widely used best-practice line for memorable names, so the generator flags anything longer so you can weigh the trade-off. The technical hard limit is 63 characters per label.
Click the Search availability link on any idea to run it through our domain search. The .com space is crowded, so expect some to be taken; the generator produces enough variety that several should be free. If your favorite is gone, try an alternative TLD or tweak the keyword and regenerate.
No. The tool only generates ideas; it does not register or reserve anything. To own a domain you must check availability and then register it through a registrar. Treat the output as a brainstorming shortlist, verify availability, then register the one you want before someone else does.