Professional Solar & Energy Calculators

Calculate voltage, current, resistance, and power using Ohm's Law.

Convert between Watt, kWh, MWh, and other energy units.

Calculate the correct inverter size for your solar panel system.

Calculate required charge controller size based on solar array and battery specifications.

Calculate battery backup time for specific loads during grid outages.

Determine optimal battery bank size based on daily energy consumption and autonomy days.

Calculate charging time for your batteries based on solar input and battery capacity.

Calculate battery runtime for different loads to optimize your energy usage.

Estimate battery health based on voltage readings and usage patterns.

Calculate your battery capacity based on load, voltage, and backup time requirements.