# Free AI, developer and business tools

URL: https://shahid09.is-a.dev/tools/

Free tools that run in your browser: AI prompts, tokens and costs, RAG chunking, tool schemas, JWTs, JSON, Base64, timestamps, UUIDs, hashes, IMEI numbers, WhatsApp links and passwords. Nothing you type is uploaded.

- [AI prompt generator](https://shahid09.is-a.dev/tools/ai-prompt-generator/): Turn a rough idea into a clear, structured prompt: say who the AI should be, what to do, what it needs to know and how to answer.
- [LLM token counter](https://shahid09.is-a.dev/tools/llm-token-counter/): Paste text to estimate its token count, see words and characters, and check how much of a model's context window it would use.
- [AI API cost calculator](https://shahid09.is-a.dev/tools/ai-api-cost-calculator/): Estimate what an AI feature or chatbot will cost each month from how many requests it handles and how long they are.
- [RAG text chunker](https://shahid09.is-a.dev/tools/rag-text-chunker/): Split a document into chunks for retrieval-augmented generation, with the chunk size and overlap you choose, and preview every chunk.
- [AI tool schema generator](https://shahid09.is-a.dev/tools/ai-tool-schema-generator/): Paste an example of the JSON your AI tool should receive, and get a JSON Schema or a complete Claude tool definition for function calling.
- [JWT decoder](https://shahid09.is-a.dev/tools/jwt-decoder/): Paste a JSON Web Token to read its header and payload, and see when it was issued and when it expires.
- [JSON formatter and validator](https://shahid09.is-a.dev/tools/json-formatter/): Paste JSON to format it with readable indentation, minify it to one line, or find exactly where it is broken.
- [Base64 encoder and decoder](https://shahid09.is-a.dev/tools/base64-encoder-decoder/): Encode text to Base64 or decode Base64 back to text, including emoji and non-English characters, with an optional URL-safe format.
- [Unix timestamp converter](https://shahid09.is-a.dev/tools/unix-timestamp-converter/): Convert a Unix timestamp (epoch time) to a readable date, or a date to a timestamp, and see the current time in seconds and milliseconds.
- [UUID generator](https://shahid09.is-a.dev/tools/uuid-generator/): Generate random version 4 UUIDs, one at a time or in bulk, and copy them in the format you need.
- [SHA-256 hash generator](https://shahid09.is-a.dev/tools/hash-generator/): Type or paste text to get its SHA-256, SHA-1, SHA-384 and SHA-512 hashes instantly.
- [AI chatbot ROI calculator](https://shahid09.is-a.dev/tools/ai-chatbot-roi-calculator/): See how many hours and how much money an AI chatbot on WhatsApp, Telegram or your website could save your team each month.
- [WhatsApp link generator](https://shahid09.is-a.dev/tools/whatsapp-link-generator/): Create a link that opens a WhatsApp chat with your number and an optional message already typed in.
- [IMEI checker](https://shahid09.is-a.dev/tools/imei-checker/): Check whether a phone's IMEI number is valid, and see which part identifies the model.
- [Password generator](https://shahid09.is-a.dev/tools/password-generator/): Create strong random passwords on your own device, with the length and characters you choose.