Electrical & utilities calculators

10 free tools for electricity cost, solar sizing, wire gauge, ventilation, and monthly utilities.

kWh / Electricity Cost Calculator

Daily, monthly, and yearly running cost for any appliance.

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Solar Panel Calculator

How many solar panels you need to cover your usage.

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Solar Cost Calculator

Net system cost after your incentive or tax credit rate.

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Electrical Load Calculator

NEC-style home service size, Optional Method.

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Wire Size / Gauge Calculator

Wire size by ampacity and voltage drop.

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Exhaust fan sizing for a bathroom, kitchen, or laundry room.

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Ceiling Fan Size Calculator

Right blade span for your room's square footage.

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Whole House Fan Size & CFM Calculator

Fan sizing for attic-vented whole-home cooling.

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Conduit Bending Calculator

Offset bend marks and shrinkage for EMT conduit.

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Utilities Calculator

Rough monthly estimate for electric, gas, water, and more.

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