About Tools Hub
Tools Hub is a free collection of online calculators, converters, and developer utilities built for everyday use. Every tool runs entirely in your browser — no server, no account, no installation required.
What we offer
We cover four main categories: Finance & Math (loan calculators, compound interest, tip splitting), Date & Time (date differences, age, timezone conversion), Developer Tools (JSON formatter, regex tester, Base64, URL encoder, cron builder), and Utilities (password generator, word counter, BMI, TDEE, unit converter, UUID generator, Markdown editor).
All tools are free to use with no usage limits. Most work completely offline after the initial page load, so your data never leaves your device.
Privacy
We take privacy seriously. Calculations and conversions happen client-side in your browser. We do not collect, store, or transmit the values you enter into any of our tools. See our Privacy Policy for full details.
Contact
Found a bug or have a suggestion for a new tool? We would love to hear from you. Visit our Contact page to get in touch.
Tools Hub is supported by advertising. Ads help keep all tools free. We use Google AdSense which may display interest-based ads. You can manage ad preferences through Google Ad Settings.