About hello-tools

What is hello-tools?

hello-tools is a collection of over 100 free online tools — calculators, converters, timers, generators, and games — all accessible directly from your browser with no installation or sign-up required.

Our tools cover health (BMI, calorie calculators), finance (loan, retirement calculators), development (UUID, JWT, regex tools), utilities (unit converters, QR codes), and entertainment (solitaire, sudoku, tarot).

Our Mission

We believe that useful tools should be accessible to everyone, for free, forever. Our mission is:

  • Provide 100% free, no-ads-barrier tools for everyday needs
  • Keep all processing local — your data never leaves your browser
  • Support multiple languages so people worldwide can use our tools

Tool Categories

Health & Fitness

BMI, BMR, TDEE, calorie burn, pregnancy, ovulation calculators

Finance

Loan EMI, compound interest, retirement, investment, CAGR calculators

Developer Tools

UUID, Base64, JSON, JWT, regex tester, number base, color converter

Utilities

Unit converter, date calculator, QR code, password generator, photo editor

Games & Fun

Solitaire, sudoku, minesweeper, checkers, connect 4, tarot card readings

Productivity

Pomodoro timer, typing test, speed math, sleep calculator, timer

Privacy & Security

We take your privacy seriously. Unlike many free tools, we do not store, track, or sell your data.

  • All calculations run locally in your browser — no data uploaded to servers
  • No account required — use all tools anonymously
  • Minimal, privacy-respecting analytics via Vercel Analytics

Contact Us

Have a suggestion, found a bug, or want to request a new tool? We'd love to hear from you. While we don't provide direct email support at this time, we regularly review user feedback and improve the site based on your input. Stay tuned for upcoming features and new tools!

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