Blackout Survival
Calculator
Add your essential appliances to calculate exactly how much backup power you need. Get personalized generator recommendations.
⚡ Quick Add Appliances
Your Appliances
Add items you need during an outage
Your Generator Recommendation
Power Station
Based on your power needs...
⭐ Top Recommended Generators
As an Amazon Associate, we earn from qualifying purchases.
Frequently Asked Questions
Everything you need to know about backup power
How to Use This Calculator
Follow these simple steps to find your perfect backup power solution
List Your Appliances
Add the appliances you need during an outage. Prioritize medical devices, refrigerator, and communication devices.
Set Usage Hours
Estimate how long you'll use each appliance. Fridges run 8-12 hrs/day, phones charge 1-2 hours.
Get Your Results
We calculate your Watt-hours with a 20% safety buffer and recommend the perfect generator size.
Understanding Watt-Hours
A 1000Wh generator can power a 100W appliance for ~10 hours. Real-world efficiency is 85-90%, so we account for this in our recommendations.