Generator Wattage Calculator — Free Online Tool
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Generator Wattage Calculator

Calculate total running watts and peak starting surge requirements

Generator Formula: $\text{Total Power} = \text{Running Watts} + \text{Highest Starting Surge Watts}$. Enter your total appliance wattage requirements below.
Appliance Power Load Input

Calculation Results

⚠️ Motors and compressors require extra starting surge wattage when powering on. Always ensure your generator's peak starting capacity exceeds this total.

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