Solar Potential & Savings

Estimate your solar generation capacity and financial returns

rooftop with solar potential

Solar roof calculator

See how well your roof is suited for solar power.
Rooftop Home Business
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solar savings calculator

Solar savings calculator

Find out how and when an investment in solar will pay off.
Home Business
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sample zip code solar potential

Zip code solar potential

Determine what kind of monthly power a typical solar array can expect in your area.
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EV & Transportation

Calculate electric vehicle charging costs and savings

electric vehicle charging

EV charging cost calculator

Calculate your annual EV charging costs at home and on the road. Compare to gas and see your potential savings.
Home
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electric vs gas vehicle comparison

EV vs gas calculator

Compare the total cost of ownership between electric and gas vehicles. See savings over 5-10 years including fuel, maintenance, and incentives.
Home
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solar panels for electric vehicle charging

EV solar sizing calculator

Calculate how many solar panels you need to charge your electric vehicle. Size your solar system for your EV and driving habits.
Home
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System Design

Size and configure your solar system components

list of devices

Inverter size calculator

List your electrical devices to calcuate required inverter size.
Off-grid
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charge controller sizing diagram

Solar charge controller calculator

Size your MPPT or PWM charge controller based on panel specs, wiring, and temperature.
Off-grid DIY
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DIY Tools

Hands-on calculators for solar enthusiasts and builders

solar panel option stats

Find matching solar panels

Find solar panels for a solar generator, inverter, or charger.
DIY
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solar panel angle diagram

Solar panel angle calculator

Find the best angle for your solar panels at your location.
DIY
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series parallel diagram

Series & parallel calculator

Calculate voltage and current for different series / parallel wiring.
DIY
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wire size diagram

Wire Size Calculator

Calculate proper wire gauge for safe, efficient electrical installations.
DIY
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Unit Conversions

Power Conversions

Watts to Amps Convert watts to amps using voltage Amps to Watts Convert amps to watts using voltage Volts to Watts Convert volts to watts using current Watts to Volts Convert watts to volts using current Volts to Amps Convert volts to amps using power Amps to Volts Convert amps to volts using power Ohm's Law Calculator Calculate voltage, current, or resistance

Battery & Energy Conversions

Ah to kWh Converter Convert amp-hours to kilowatt-hours with runtime calculator kWh to Ah Converter Convert kilowatt-hours to amp-hours with runtime calculator Amp Hours to Watt Hours Convert battery Ah to Wh capacity Watt Hours to Amp Hours Convert battery Wh to Ah capacity kWh to Watts Convert energy to average power Watts to kWh Calculate energy from power usage mAh to Watt Hours Convert power bank mAh to Wh Watt Hours to mAh Convert Wh to power bank mAh

HVAC & Inverter Conversions

BTU to Watts Convert AC/heating BTU to watts Watts to BTU Convert watts to BTU capacity VA to Watts Convert apparent to real power Watts to VA Size inverters and UPS systems

Home Energy Use

Understand and optimize your household energy consumption

refrigerator energy usage

Refrigerator Energy Consumption

Calculate your fridge's annual energy cost and compare to ENERGY STAR averages.
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Environment

Measure and reduce your environmental impact

carbon footprint visualization

Carbon Footprint Calculator

Calculate your household's carbon footprint from electricity, transportation, and appliances.
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