Contact address
Email contact@calclogichub.com. Please use a clear subject such as “Calculator correction,” “Privacy request,” “Accessibility,” or “Advertising.”
Corrections and feedback
If you notice a formula, unit, label, broken reference, or accessibility issue, include the page URL, values entered, observed result, expected result, and an authoritative source when available.
Privacy requests
Describe the right or choice you want to exercise and the country or state that applies. Do not send identity documents, financial records, health records, passwords, or full browser identifiers unless we specifically explain why limited verification is necessary.
Calculator requests
Suggestions for useful calculators and converters should describe the intended audience, required inputs, formula source, assumptions, and preferred output.
Privacy reminder
Calculator inputs are processed locally and are not available to us. Do not include sensitive financial, health, or identity information in your message.