Privacy policy

Calculator inputs are processed in your browser and are not submitted to our server. This website uses Google Analytics to understand website usage.

The hosting provider may keep standard server access logs, including IP address, request path and browser information. Administrator sign-in uses an essential session cookie and stores hashed passwords. Failed administrator sign-in attempts are rate-limited using a hashed IP address. Public calculator users do not need an account.

Blog submissions store your author name, designation, photo, article and uploaded images for editorial review. Approved author details and articles may be published. The submission form uses Google reCAPTCHA, which processes device and usage information under Google’s Privacy Policy and Terms of Service. External websites have their own privacy policies. If analytics, advertising or other integrations are added, this policy must be updated before those services are enabled.