Human-Centered Engineering

Welcome to FreeConverterToolkits. My name is Roshan Karki. I am a Computer Engineering graduate from Tribhuvan University (Institute of Engineering - IOE) with over 5 years of experience in browser-side utility engineering. I have built 15+ standalone browser tools serving thousands of users globally. Born and raised in Bardibas, Nepal, and operating out of my home studio in Kathmandu, I built this platform because I believe that technical expertise should serve humanity, starting with privacy.

Roshan Karki

Lead Software Engineer & Founder

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Core Engineering Credentials

🎓 Academic Degree: Bachelor's Degree in Computer Engineering, Tribhuvan University (IOE).
🛠️ Professional Experience: 5+ years of specialized experience in high-performance, client-side web utility architectures.
🌍 Global Impact: Author and developer of 15+ high-speed browser-side tools serving thousands of active users worldwide every day.
🏡 Origin & Location: Born in Bardibas, Nepal; currently operating from Kathmandu.

From Bardibas to Global Engineering

During my journey from the quiet streets of Bardibas to the high-pressure environments of global software development, I witnessed a trend that troubled me: the "Data Harvesting Era." Websites were increasingly requiring users to upload sensitive personal data just to perform simple math or a unit conversion.

Built in Kathmandu, Dedicated to the World

Operating from my studio in Kathmandu, I have engineered every tool on this site to be 100% Client-Side. Whether you are a student in Australia, a researcher in Germany, or a business owner in Nepal, you deserve tools that don't spy on you. My commitment to you is simple: Your data is yours. My code is here only to help you process it.

🛡️ Privacy as a Right

I fulfill the highest privacy standards by purely mathematical means: I never collect your data. It stays in your browser's memory, never reaching my server.

☕ Support the Lab

I provide these tools 100% free of charge. I support the maintenance costs through non-intrusive AdSense ads, ensuring accessibility for students worldwide.

A Commitment to Accuracy

Every algorithm on this site—from the BMI calculator based on WHO metrics to the EMI amortization math—is hand-coded and rigorously tested. I don't use black-box libraries; I implement the raw mathematical logic to ensure that your results are precise, reliable, and scientifically sound.

Get in Touch

I welcome feedback, bug reports, and tool requests from users around the world. The best way to reach me is directly:

📧 Email: support@freeconvertertoolkits.com
📝 Contact Form: Contact Page

Response time is typically within 24–48 hours on weekdays (Nepal Standard Time).

"Efficiency without exploitation. Accuracy without intrusion."