Free Calculators

Interactive tools to help you plan, size, and budget your off-grid power system.

Solar Sizing Calculator

Find the perfect solar generator for your specific appliances and usage patterns.

Calculate how long any battery will run your devices before needing a recharge.

Estimate the total cost of your off-grid solar system based on your energy needs.

Find the right inverter size for your appliances based on running and surge watts.

Calculate the right charge controller for your solar array and battery bank.

Calculate how many solar panels you need and plan your panel placement.

Calculate how long it takes to charge your generator with solar, AC, or car charging.

Select appliances, battery specs, or energy needs. Our calculators handle the rest.

Get precise calculations with industry-standard efficiency factors.

Get matched to recommended products based on your exact needs.

Read our comprehensive guide on how to calculate your solar power needs.