Privacy Policy

Calculator inputs stay in your browser

The numbers and values you type into our calculators are processed on your device. These calculations run in your browser, so your inputs are not transmitted to or stored on our servers. When you close or refresh the page, those values are gone unless you have explicitly chosen to save a calculator.

Information we collect

• Aggregated, privacy-respecting analytics about which pages are visited and how the site performs
• Standard technical information such as browser type, device type, and approximate region
• Preferences you set, such as light or dark theme and saved calculators, stored locally in your browser

We do not ask for your name, address, or payment details, because Calcshark is free and requires no account.

How we use information

• Improve calculator accuracy, reliability, and performance
• Understand which tools are most useful so we can prioritize new ones
• Measure site uptime and diagnose technical issues
• Detect and prevent abuse, spam, and fraud

Cookies and local storage

We use cookies and your browser's local storage to remember preferences and measure usage. You can control or clear these at any time. For details, see our Cookie Policy.

Third-party services

We may use trusted third-party providers for analytics and hosting. These providers process limited technical data on our behalf and are not permitted to use it for their own purposes beyond providing their service.

Your choices

You can browse Calcshark without providing personal information. You can disable cookies in your browser settings, clear local storage to remove saved preferences, and opt out of analytics where your browser or an extension supports it.