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Common Questions

How do I use a calculator?

Simply enter your information in the form fields and click the calculate button. Results appear below with recommendations based on your inputs. All calculations run in your browser—we don't store your data.

Can I suggest a new calculator?

We'd love to hear your ideas. Send us an email with "Feature Suggestion" in the subject line. Let us know what you'd like to calculate and why it would be helpful.

I found an error in a calculator

Please report it! Email us with "Bug Report" in the subject and describe the issue. Include which calculator, what inputs you used, and what result seemed wrong. Screenshots are helpful.

Do you sell products?

No. DisasterPrepCalc is an educational resource. We don't sell products directly. We may earn a small commission through affiliate links at no extra cost to you. See our Affiliate Disclosure for details. Our recommendations are based solely on what we believe is best for your preparedness.