Estimate total electrical load from multiple devices, appliances, circuits, or equipment. This calculator can total watts, amps, volt-amps, kVA, kWh, demand-adjusted load, and basic circuit load percentage.
Total watts:
Each load is multiplied by its quantity, then all load watts are added together.
Total amps:
For single-phase, amps are estimated as watts divided by volts. For three-phase, the calculator uses the three-phase relationship with √3.
Energy use:
Watts are converted to kilowatts, then multiplied by hours and days to estimate kWh.
An electrical load calculator helps estimate how much power multiple devices, appliances, or circuits may use together.
It can help with basic circuit planning, generator sizing estimates, UPS sizing estimates, appliance loads, lighting loads, workshop loads, RV loads, garage loads, and home project planning.
Your result shows total connected load, demand-adjusted load, estimated amps, VA, kVA, kilowatts, kWh, breaker load percentage, remaining circuit capacity, load category, and a load-by-load summary.
Electrical load is the amount of power used by devices, appliances, lighting, motors, or equipment connected to an electrical system.
Add the wattage of each device or circuit. If there are multiple identical devices, multiply watts by quantity before adding them.
For a basic single-phase estimate, divide watts by volts. For example, 1,200 watts at 120 volts is about 10 amps.
No. This is a planning estimate. Electrical panels, breakers, wire sizing, service calculations, continuous loads, and code requirements should be checked by a qualified electrician.