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Electrical Panel Upgrade Calculator

Find out what amperage panel you need after adding new circuits, EV chargers, or major appliances. Use it before calling an electrician so you arrive at the conversation with a concrete upgrade target.

Existing Load (amps)

New Load to Add (amps)

Future Load (EV, etc.) (amps)

Safety Factor

Fill in the required fields to see your result.

Electrical Home

Electrical Panel Load Calculator

Calculate your home's total electrical panel load and remaining capacity in volt-amperes, so you know whether your panel can support new appliances, an EV charger, or a home addition. Use it before calling an electrician for a panel upgrade assessment.

Panel Rating

General Lighting & Outlets (VA)

Appliance Loads (VA)

HVAC Loads (VA)

Demand Factor

Fill in the required fields to see your result.

Key differences

	Electrical Panel Upgrade Calculator	Electrical Panel Load Calculator
Category	Electrical Home	Electrical Home
Inputs required	4	5
Result	Recommended Panel Size (amps)	Available Panel Capacity (VA)
What it does	Find out what amperage panel you need after adding new circuits, EV chargers, or major appliances. Use it before calling an electrician so you arrive at the conversation with a concrete upgrade target.	Calculate your home's total electrical panel load and remaining capacity in volt-amperes, so you know whether your panel can support new appliances, an EV charger, or a home addition. Use it before calling an electrician for a panel upgrade assessment.