59+ Free ToolsAll Tools.
All Tools.
Zero Hassle.
Fast, free tools for text, calculations, AI/LLM workflows, freelancing, and more. No signup. Works instantly in your browser.
Text Tools
8 toolsCalculators
6 toolsConverters
2 toolsUnit Converters
4 toolsImage & PDF Tools
3 toolsDeveloper Tools
11 toolsAI Tools
8 toolsSEO Tools
5 toolsGenerators
5 toolsBusiness & Career
7 toolsWhy UtilZilla?
Instant Results
All tools run directly in your browser. No waiting for server responses.
Private & Secure
Your data never leaves your device. We do not store or transmit anything.
Works Everywhere
Fully responsive design. Use on mobile, tablet, or desktop seamlessly.
Frequently Asked Questions
UtilZilla is a free collection of 59+ browser-based utility tools — calculators, converters, text tools, developer tools, AI/LLM tools, SEO tools, and generators. Every tool runs entirely client-side, with no signup required.
Yes, every tool on UtilZilla is completely free, with no paywall, usage limit, or premium tier.
No. Every tool works immediately with no signup, login, or email required.
Yes — every tool runs 100% client-side in your browser. Text, files, and numbers you enter are never uploaded to a server, so nothing you process on UtilZilla is seen, stored, or transmitted anywhere.
Text tools, calculators, unit converters, image and PDF tools, developer tools (JSON formatter, hash generator, UUID generator, and more), AI/LLM tools (token counter, API cost calculator, JSON Schema validator), SEO tools, and generators.
Yes — the AI Tools category includes a Token Counter (exact tiktoken counts for GPT models), an AI API Cost Calculator, a Context Window Calculator, a JSON Schema Validator for LLM structured output, an llms.txt Generator, and an Embedding Cosine Similarity Calculator.