Solar Calculator | Free Online Tools

Intelligent solar calculator tools to give you accurate estimates

Solar Calculator

Solar Calculator for DIY Solar Homes.

load calculator

System Load Calculator For Solar

  • Calculate your monthly load that you need to convert to solar
  • Easy calculator with preloaded average potential loads
  • Use this result in system sizing tool below

Calculate your system load

Solar System Size

Solar System Sizing Tool

  • Use tool to find the size of your solar system
  • This tool automatically takes into account all the losses in storing, transmission etc
  • This tool allows you to set number of hours of sunlight that you expect

Size your solar system


Solar Water Heater Calculator

  • Find size of system you require for solar water heater
  • Calculator available for different commercial/residential
  • Automatic calculation of heat loss and other data

Find Solar Water Heater Size


Solar Radiation Finder, DNI

  • Find DNI of local cities of India
  • DNI annual average and monthly data
  • India map for solar radiation

Find Solar Radiation

charge controller

Solar Charge Controller Calculator

  • Calculate the amperage you need for your solar system's charge controller.
  • Use different module sizes.
  • Use different voltage supply sizes.

Calculate solar charge controller's amperage

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Each solar calculator takes time and effort from our team and we ask you to share about them with your friends to use them free of cost. However, the page will automatically get unlocked in 5 minutes. You can also register for our website  in less than 30 seconds and use all calculators without any social prompts for free!


While we try our best to update the data and make sure the results are accurate, Saurya takes no responsibility nor liability for any action you may take based on the data you find here. We encourage to use these solar calculators for an initial estimations only, for any other requirement it is recommended to consult a professional solar engineer. Recommended Solar Calculator from Government of India: Click Here

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tags: solar calculator india, solar panel calculator, solar power calculator, solar calculator for india