Privacy Policy

Our Privacy Commitment

percentcalc.one is designed with privacy as a core principle. All percentage calculations, conversions, and computations happen entirely within your web browser. No data is transmitted to our servers or any third party.

Data We Do NOT Collect

• Numbers or values you enter into calculators
• Calculation results
• Personal information (name, email, etc.)
• We do not require account creation or login

Local Storage

We use your browser's local storage solely to remember your dark/light mode preference. This data never leaves your device and can be cleared at any time through your browser settings.

Third-Party Services

We may use third-party advertising services to display ads on our site. These services may use cookies and similar technologies to serve relevant ads. You can manage cookie preferences through your browser settings.

We may use analytics services to understand how visitors use our site in aggregate. This data is anonymized and does not identify individual users.

Client-Side Processing

All calculator tools on percentcalc.one use 100% client-side JavaScript. This means:

• Your data never leaves your device
• Calculations work even without an internet connection (once the page is loaded)
• There are no server-side APIs processing your inputs
• No calculation history is stored anywhere

Contact

If you have questions about this privacy policy, please visit our About page.