Solar Calculators
Free precision tools for sizing solar panels, calculating cable thickness, and choosing the right charge controller. Built for US & Metric units.
Solar Panel Angle
Calculate the exact tilt angle for your solar panels based on your location and season for maximum efficiency.
Cable Size Calculator
Find the correct wire gauge (AWG/mmΒ²) to prevent voltage drop and ensure safety in your solar setup.
Charge Controller
Determine the right size (Amps) for your MPPT or PWM solar charge controller based on total panel wattage.
About Our Solar Calculators
Planning a DIY solar setup requires precision. Our free solar calculators help you design an efficient and safe off-grid or grid-tied system. Whether you are figuring out the optimal solar panel angle for your roof, sizing the correct cable thickness to avoid power loss, or selecting the perfect charge controller, these tools provide instant results.
All calculators support both US Imperial and Metric systems. Just select a tool above, enter your specifications, and get your measurements in secondsβno signup required.