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Popular Tools
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UUID Generator
Generate UUID v4 (random), v7 (time-sorted), v5 (namespace), and GUIDs. Bulk generate up to 500, decode & validate.
Word Counter
Count words, characters, sentences, paragraphs and estimate reading time. Paste any text and get instant statistics.
Hash Generator
Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes from any text. 100% client-side using Web Crypto API.
URL Encoder / Decoder
Encode and decode URL components with percent-encoding. Handles spaces, special characters, and Unicode. Instant, client-side.
Prompt Tokenizer
Estimate token count and API cost for any prompt across GPT-4.1, Claude 3.7, Gemini 2.5 and more. Adjust expected output tokens to calculate total cost.
AI Model Cost Calculator
Compare API costs across all major LLMs — GPT-4o, Claude, Gemini, Llama. Enter token counts and monthly request volume to find the cheapest option.