🛡️ Preppers HQ / Preparedness Hub
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🛡️⚡ Faraday Cage Sizer

List the electronics you want to protect from an EMP/solar event, and we'll estimate the container size and shielding layers you need to build an effective Faraday cage.

DeviceEst. size
0 cu ft
Total Volume Needed (With Buffer)

🔧 Recommended Setup

📋 Build Checklist

⚠️ Devices must be fully insulated from the metal container (wrap in cardboard/cotton, then foil, then place in the metal container) and the container must have NO gaps or unshielded openings — even small seams can let EMP energy through.
Part of the Preppers HQ Preparedness Hub — free tools for real-world readiness.