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Size your wire, fuses, battery bank, solar array, and charge controller correctly the first time — no guesswork, no spreadsheets.
All Calculators
Add up what you actually use, device by device, and get your recommended battery bank, solar array, and inverter size in one pass.
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Match your solar array to the right MPPT charge controller, sized to your exact panel voltage, wattage, and battery bank.
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Find the right wire gauge for your DC circuit in seconds, sized to ABYC standards for voltage drop and amp load — then shop the exact wire.
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Fuse Sizing Calculator
Enter your device amps and wire size to get the minimum, recommended, and max fuse rating for your circuit.
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See how long your battery bank will take to reach full based on its size, state of charge, and charging amperage.
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Convert between watts, amps, volts, amp hours, and watt hours instantly — enter any two known values to solve for the third.
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A full guide to reading and using your Power Audit results, step by step, if you'd rather read it out than jump straight into the tool.
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