About Us

Last Updated: May 30, 2026

Who We Are

PercentCalc Pro is a completely free online calculator platform built for everyone who needs fast, accurate, and easy-to-use tools. We provide professional converters for currency, units, fitness, pet age, daily calories, and many more practical calculators — all in one clean and modern website.

Our Mission

We believe high-quality calculation tools should be free and accessible to all. No registration, no paywalls, no excessive ads. All calculations are done locally in your browser, ensuring lightning-fast speed and complete privacy. Your data never leaves your device.

Why Choose PercentCalc Pro

• 100% Free forever — no hidden fees or subscriptions
• Real-time currency exchange rates with multiple backup sources
• 15+ useful calculators covering finance, health, travel, pets, and daily life
• Fully responsive design that works beautifully on both mobile and desktop
• Complete bilingual support (English & Traditional Chinese)
• No data collection — your privacy is our top priority
• Regularly updated based on user feedback

Real User Cases

Travelers use our currency converter before trips. Fitness enthusiasts rely on BMI, BMR, TDEE and Daily Calorie calculators to reach their health goals. Pet owners love the Pet Age and Pet Food calculators to better understand their furry friends’ needs. Students, engineers, and business professionals use our unit converters for school projects, work, and international trade.

Our Vision

We want to become the most trusted free calculator website in the world. By listening to our users and continuously adding new useful tools, we hope to save people time and reduce daily frustration — whether you are planning a trip, managing your health, taking care of pets, or handling business calculations.

Contact Us

We welcome all feedback, suggestions, and ideas for new calculators. If you find any bugs or want to request a new tool, please don’t hesitate to reach out.

Email: calculator0504@gmail.com