About tinyjstools
Our mission
tinyjstools is a collection of free online tools designed to solve specific problems quickly and clearly.
Most tools run directly in your browser, require no registration, and aim to provide accurate results along with educational explanations whenever possible.
The goal is simple: create useful tools that are fast, privacy-friendly, and easy to understand.
Why tinyjstools exists
Many online calculators are cluttered with ads, popups, account requirements, or unnecessary complexity.
tinyjstools focuses on small, focused tools that solve one problem well.
How the tools work
Tools are built using JavaScript and run entirely in the browser whenever possible. Results are calculated locally on your device rather than sent to a server.
Mathematical tools include explanations and worked examples to help users understand the result, not just obtain it.
Data sources
Some tools rely on public datasets such as GeoNames and OpenStreetMap for geographic data.
Privacy and local processing
No registration is required to use any tool on tinyjstools. Tools that calculate or display results do so directly in your browser — nothing is sent to our servers.
Your recently used tools and favorites are stored only in your browser’s local storage. This data stays on your device and is never transmitted to us.
Development and AI assistance
Some tools and educational content are developed with the assistance of modern AI systems. All published content is reviewed and tested before release.
Disclaimer
The information provided by tinyjstools is for educational and informational purposes only.
While every effort is made to ensure accuracy, no guarantee is provided regarding the completeness or correctness of the results.
Contact
Found a bug or have an idea for a new tool? We’d love to hear from you.