Essential session cookies support secure forms and administration. Local browser storage remembers your analytics choice and, where applicable, advertising permission. Advertising permission expires after 180 days. Rejecting optional cookies does not prevent calculator use.
Google Analytics loads only after an affirmative choice when configured. Non-personalized advertising still may use cookies for delivery, measurement and fraud prevention. In Iraq, the United States, Australia and New Zealand, non-personalized ads load directly unless you have opted out. In Canada, our advertising permission control appears before Google ad requests. European and other or unknown regions remain gated by the configured certified TCF consent platform.
Use Privacy choices in the footer to reject ads, opt out of sale or sharing, or change analytics permission. Advertising revocation reloads the page. You can clear existing third-party cookies through your browser. See the Privacy policy for data purposes and retention.