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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. Use the contact form above and select "Feature Suggestion" as the subject. 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! Select "Report a Bug" in the contact form 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, take commissions, or provide affiliate links. Our recommendations are based solely on what we believe is best for your preparedness.