The calculator can be used without creating an account. We may collect:

• Information you provide: If you contact us, we may receive your name, email address, and the message you send.
• Basic usage data: We may collect aggregated, non-identifying analytics (for example, pages visited and approximate device/browser information) to improve the site.
• Local settings: Some preferences (like theme) may be stored in your browser via local storage.

We use information to:

• Provide and maintain the website and calculators
• Respond to your messages and support requests
• Understand performance and improve features
• Prevent abuse and keep the site secure

We do not sell your personal information.

We may use cookies or similar technologies to remember preferences and measure site performance. Some third-party services (for example, analytics or advertising providers) may also set cookies.

You can control cookies through your browser settings. Disabling cookies may affect some features.

We may share information only in limited situations, such as:

• With service providers that help us operate the site (e.g., hosting/analytics), under confidentiality obligations
• To comply with legal obligations or enforce our policies
• To protect the security and integrity of the website

You may request access, correction, or deletion of information you provided to us (where applicable). For privacy questions, contact us via our Contact page.