Generator & Backup Power Hub
Size it, fuel it, and keep it running. Every generator and battery-backup calculator, reference chart, and buying guide on DisasterPrepCalc, in one place.
Sizing & Runtime Calculators
Start here. Two minutes with a calculator beats guessing at the hardware store.
Generator Size Calculator
Pick your appliances, get exact running and starting watts.
Whole House Generator Calculator
Size a standby generator by home size, AC tonnage, and loads.
Generator Runtime Calculator
How long your fuel lasts at your actual load.
Power Station Runtime Calculator
Watt-hours to real hours for battery stations.
Power Runtime Calculator
Backup runtime for any battery bank and load.
Sizing Reference Chart
Printable wattage chart for 40+ appliances.
Featured Battery Backup
Anker SOLIX C1000 Gen 2 Portable Power Station
The battery station we point readers to first: silent, indoor safe, and recharged in under an hour, with 1,056Wh for fridge, lights, and devices.
Need 240V or multi-day capacity? Step up to the Anker SOLIX F3800, expandable to 26.9kWh. Size either one with the runtime calculator.
Buying Guides
Best Portable Power Stations 2026
Battery stations ranked by real watt-hours per dollar.
Best Portable Generators 2026
Gas and dual-fuel picks for every budget.
Best Emergency Generator 2026
Our overall emergency backup rankings.
Generator Brand Comparison
Honda vs Champion vs Westinghouse vs DuroMax, plus the battery alternative.
Generator Wattage Reference
What every appliance actually draws.
Winter Power Outage Guide
Heat, water, and power when the grid fails in the cold.