20 tools
Energy & Appliances Calculators
Estimate electricity use, charging time, equipment size, operating cost and energy savings.
Appliance Electricity Cost CalculatorEstimate monthly and annual electricity use and cost for an appliance.
Air Conditioner Electricity Cost CalculatorEstimate monthly and annual electricity use and cost for an air conditioner.
Space Heater Electricity Cost CalculatorEstimate monthly and annual electricity use and cost for a space heater.
Ceiling Fan Electricity Cost CalculatorEstimate monthly and annual electricity use and cost for a ceiling fan.
Dehumidifier Electricity Cost CalculatorEstimate monthly and annual electricity use and cost for a dehumidifier.
Pool Pump Electricity Cost CalculatorEstimate monthly and annual electricity use and cost for a pool pump.
Refrigerator Electricity Cost CalculatorEstimate monthly and annual electricity use and cost for a refrigerator.
Electric Dryer Cost CalculatorEstimate monthly and annual electricity use and cost for an electric dryer.
Electric Water Heater Cost CalculatorEstimate monthly and annual electricity use and cost for an electric water heater.
Standby Power Cost CalculatorEstimate monthly and annual electricity use and cost for standby electronics.
EV Home Charging Cost CalculatorEstimate the electricity and cost required to add a given amount of energy to an EV battery at home.
EV Charging Time CalculatorEstimate how long an EV charge will take from starting state of charge to target state of charge.
Solar Payback CalculatorEstimate simple payback time and lifetime net savings for a solar project.
Home Battery Runtime CalculatorEstimate how long a home battery can support a steady electrical load.
Generator Fuel Cost CalculatorEstimate generator fuel gallons and operating cost from burn rate and runtime.
Generator Size CalculatorEstimate a generator wattage target from total running load and the largest startup surge.
LED Lighting Savings CalculatorEstimate electricity and dollar savings from replacing higher-wattage bulbs with LEDs.
Heat Pump vs Electric Heat Savings CalculatorCompare annual electricity cost for a heat pump versus electric resistance heating.
Mini-Split Size CalculatorEstimate a rough mini-split cooling capacity range from floor area, ceiling height and climate load.
Window AC Size CalculatorEstimate a rough window-air-conditioner BTU target from room size, ceiling height and sun exposure.