Will my panel take it? Service load calculator

Enter your house and the big fixed appliances, then tick what you want to add: a heat pump water heater, induction range, EV charger or a battery that charges from the grid. We run the NEC optional method (2023 NEC) and show whether the service still passes. Use the nameplate on each appliance; the add-on values are typical, not from a specific product.

How this is worked out

NEC 220.82(B): 3 VA per sq ft, 1,500 VA for each small-appliance and laundry circuit, plus nameplate VA of fixed appliances. The first 10 kVA counts at 100%, the rest at 40%.
NEC 220.82(C): the heating or cooling load is added on top, using only the largest applicable choice and its percentage.
NEC 220.83: for adding load to an existing dwelling, the first 8 kVA counts at 100% and the rest at 40%; new AC or electric heat is added at 100%.
Volt-amps are divided by 240 V and rounded up, then compared with the service rating. Over 80% of the service is flagged as tight.
Standard-method results (Article 220 Part III) or a measured demand (NEC 220.87) can differ. Your electrician or inspector decides which applies.