Free portable power calculator
What Size Power Station Do You Need?
Select what you want to power and how long you need it. We'll calculate the right battery size in seconds.
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Power Station Sizer
What size battery and inverter do I need? Select your appliances and get a recommendation in seconds.
Size a Power Station
Portable Solar Sizer
How much portable solar do I need? Estimate solar panel wattage to recharge your power station or cover daily energy use.
Size Portable Solar
What are you powering?
Pick a scenario to jump straight into the calculator.
Popular Power Station Calculators
Preconfigured calculators for common appliances and use cases.
Refrigerator
Find the right capacity to keep your fridge running during outages.
Calculate
Home Backup
Size a backup system for essentials during power outages.
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Camping
Calculate capacity for off-grid weekends and outdoor adventures.
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CPAP
Ensure your CPAP runs all night, with or without a humidifier.
Calculate
Starlink
Power your Starlink for hours or days of off-grid connectivity.
Calculate
Power Outage
Plan your backup for outage durations from 4 to 24+ hours.
Calculate