Power Station Calculators
Three calculators that answer the sizing questions people get wrong most often. Each runs on the same verified dataset as the rankings, so the units it suggests are the ones the rest of the site scores.
🧮 Runtime CalculatorPick your devices and a duration; get the capacity you need and which units clear it, with automatic filtering for medical and motor loads.☀️ Solar Charge Time CalculatorHow long a panel really takes to fill a battery, using real-world output rather than the rated wattage on the box.⚡ Surge Watts CalculatorMotors and compressors spike at startup. Find the surge your appliance needs and which units can actually deliver it.
Which One Do I Need?
- How long will it last? — the runtime calculator. It divides capacity by load and takes off the 25% an AC inverter loses.
- Can it start my pump, compressor or air conditioner? — the surge calculator. Running watts are not enough for anything with a motor.
- Can solar keep up? — the solar charge time calculator. A rated 400W panel delivers roughly 280W in good sun.
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