About Online Percent Calculator
Last updated: October 15, 2025
Our Mission
We build fast, accurate, ad-free percentage calculators you can trust. No clutter, no distractions — just the math you need, instantly.
What We Do
- Core percentage tools (increase, decrease, discount, tip, etc.)
- Clear step-by-step formulas and examples
- Mobile-first UX with instant results
How We Build Accuracy
Calculations run client-side for speed and privacy. We test each formula with unit cases and real-world examples to avoid rounding surprises.
Privacy & Trust
Your inputs stay in your browser (local storage for convenience). For details, see our Privacy Policy and Cookie Policy.
Contact
Have feedback or a feature request? Reach us via the contact options on our site or ping us on X.