Free AI Tools and Prompt Generators

107 free tools that turn a rough idea into a ready-to-use prompt for ChatGPT, Gemini, Claude, or Midjourney, plus SEO helpers and AI cost calculators. Nothing to install.

  • 107 free tools
  • No sign-up
  • Runs in your browser
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Prompt Engineering Tools

Build, fix, reshape, or structure any prompt, for any technique.

Starter Kits by Profession

Six tools picked for the work you actually do, one kit per profession.

How These Tools Work

These tools don't call an AI model themselves. They build the request, and you run it in the assistant you already use.

  1. Pick a tool

    Search above or filter by category. Every tool does one job, such as a cold email, a Midjourney prompt, or a meta description.

  2. Fill in a few details

    Add your topic, audience, or tone. The tool turns that into a structured prompt instantly, right in your browser.

  3. Copy it into your AI assistant

    Paste the prompt into ChatGPT, Gemini, Claude, or an image model. A few tools, like the calculators, give you the finished answer directly.

Frequently Asked Questions

Are these AI tools really free?

Yes. Every tool on this page is free to use, with no account, no sign-up, and no usage limit.

Do I need a ChatGPT, Gemini, or Claude account to use them?

The tools themselves need no account. Most of them build a ready-to-paste prompt, which you then run in whichever AI assistant you already use, such as ChatGPT, Gemini, or Claude.

Is what I type sent to an AI model or stored anywhere?

No. The tools run in your browser. What you type into a tool is not sent to an AI model and is not saved on our servers. Tools you star are remembered in your own browser only.

Do all of the tools use AI?

No, and each tool page says which kind it is. The calculators, the SEO Slug Generator, the Keyword Grouping Tool, the Search Intent Classifier, and the Schema Markup Generator work on fixed rules and plain math, with no AI step at all.

Which tool should I start with?

If you are not sure what you need, start with the AI Tool Finder or the AI Prompt Generator. If you want tools picked for your job, open the starter kit for your profession further down this page.

Can I embed a tool on my own website?

Yes. Each generator page has an "Embed this tool on your site" section with an iframe code you can copy. Embedding is free as long as the "Powered by AIGuidePro" link stays in the frame.