Who We Are
Welcome to OnlineCalMaster, a fast, modern, and mobile-friendly calculator platform designed for students, developers, engineers, and anyone who needs quick calculations.
What We Offer
- 🧮 Basic & Scientific Calculators
- 💱 Currency Converter (Live Rates)
- 📐 Unit Converter (Length, Weight, Temperature)
- 📅 Age Calculator
- 📆 Date & Time Difference Calculator
- % Percentage & VAT Calculator
- 💡 Tip Calculator
Why Choose Us?
We believe in simplicity, speed, and accessibility. Our calculator is:
- 📱 Mobile-friendly and responsive
- 📲 PWA-ready (Installable on your home screen)
- ☕ Free to use with no ads
- 🌐 Works offline thanks to service workers
Support Us
If you find this tool useful, consider supporting us through our ☕ Buy Me a Coffee link. Every small contribution helps!
Our Vision and Commitment
OnlineCalMaster was built with the goal of making essential everyday calculations easier for everyone — whether you're a student calculating your GPA, a traveler converting currency, or an accountant dealing with percentages and VAT. We understand the pain of downloading heavy apps or using clunky websites just to solve a simple math problem.
That’s why we focused on a lightweight, web-based solution that works fast on any device. Our platform combines modern web technologies like PWA, service workers, and responsive design to give you a seamless experience. And the best part? It works offline too!
We’re continuously adding new features and improving existing ones based on user feedback. Our team is passionate about creating tools that are not only functional but also fun and engaging to use. We're committed to privacy, speed, and simplicity — no login, no ads (for now), just tools you can trust.
As we grow, our mission remains the same: deliver useful, free online calculators to the world, starting from Sri Lanka 🇱🇰 and reaching beyond. Your support helps us keep building, improving, and sharing value every day.