7 Best Free Online Solar Angle Calculator Websites

Here is a list of best free online solar angle calculator websites. Solar angle calculator is a tool that helps users determine the position of the Sun in the sky at a given time from a specific location on Earth. Solar angle calculation is used in various fields like astronomy, renewable energy, agriculture, and more. In the field of renewable energy, the solar angle is calculated to find the optimal angle for solar panels to gather the most light to improve the overall power output. If you also want to do that, check out these online solar angle calculator websites.

Through these websites, users can easily find out the optimal solar panel angle using Location and Time data. Locations can be submitted in multiple ways like fetching current location data, latitude & longitude, zip code, city name, etc. The time data can be directly submitted or by selecting a specific time zone. Based on the submitted data, these calculators show the optimal tilt angle. Most of these calculators can show the optimal solar panel tilt angle for different seasons (Spring, Summer, Fall, and Winter) and months (January to December). To help new users, I have included the steps to calculate solar angle in the description of each website.

Some of these websites offer additional solar calculators like solar declination angle, solar hour angle, solar panel direction, etc. Go through the list to learn more about these websites.

My Favorite Online Solar Angle Calculator Website:

solarsena.com is my favorite website as it calculates the solar panel tilt angle for each month. Plus, it offers multiple useful solar calculators.

You can also check out lists of best free Online Bend Allowance Calculator, Online Brewster’s Angle Calculator, and Online Rooftop Solar Installation Calculator websites.

Comparison Table:

Features/Website Names	Calulates optimal solar panel angle	Calculates optimal angle for each month and season	Also consider time in the calculation
solarsena.com	✓	✓	✓ (uses time zone)
hiresolarinstaller.com	✓	x	x
shaktipumps.com	✓	✓	x
footprinthero.com	✓	✓	x
gml.noaa.gov	x	x	✓
sunsolartilt.com	✓	✓	x
shopsolarkits.com	✓	✓	x

solarsena.com

solarsena.com is a free online solar angle calculator website. Through this website, users can calculate the solar panel orientation to find the best angle for solar panels to gather the most light and improve the power output. To perform this calculation, it uses Time Zone and Location (Latitude and Longitude) values. Not only, does this calculator calculate an optimal angle for an entire year but also generates an optimal angle for each month. It also answers common queries associated with sonar angle and solar panel orientation. Now, follow the below steps.

How to calculate solar angle online using solarsena.com:

Visit this website and access the solar panel orientation calculator.
Now, enter the Time Zone and Location values.
Next, view the optimal solar angles for each month.

Additional Features:

This website has multiple solar calculators like solar declination angle, solar hour angle, solar panel direction, and more.

Final Thoughts:

It is one of the best free online solar angle calculator websites that calculates the solar panel tilt angle for each month.

Pros	Cons
Uses time zone and location to calculate the solar angle
Shows solar panel orientation angle for each month
Comes with multiple solar calculators

Home Page

hiresolarinstaller.com

hiresolarinstaller.com is another good online solar angle calculator website. This website helps users estimate the optimal angle of solar panels based on a given geographic location and date. It also provides instructions to perform solar angle calculations using this tool. However, it doesn’t show the formula to calculate solar angle. Now, follow the below steps.

How to calculate solar angle online using hiresolarinstaller.com:

Visit this website and access the Solar Angle Calculator.
After that, enter the Latitude and Date values.
Now, click on the Calculate button to view the optimal solar panel angle in degrees.

Additional Features:

This website offers related solar calculators like Solar Panel Charge Time, Solar Outage, Solar Charge Controller, Solar Voltage Drop, and more.

Final Thoughts:

It is another good online solar angle calculator website that helps users find the optimal solar panel angle.

Pros	Cons
Calculates the optimal solar panel angle
Easy to use

Home Page

shaktipumps.com

shaktipumps.com is another free online solar angle calculator website. This website offers a solar panel tilt calculator that helps users find out the optimal tilt angle for a solar panel throughout the years. The best thing about this website is its ability to calculate the right solar panel tilt angle for all cities of many countries around the world. To perform the calculation, it uses Country and City names. It also shows diagrams highlighting the optimal tilt angles for solar panels. Now, follow the below steps.

How to calculate solar angle online using shaktipumps.com:

Visit this website and access the Solar Panel Tilt Calculator.
After that, enter the Country Name and name of a city within that specified country.
Next, view the calculated tilt angles for each month.
Finally, copy the obtained tilt angles.

Additional Features:

This website offers information about various types of pumps, motors, controllers, and other related supplies.

Final Thoughts:

It is another good online solar angle calculator website that helps users accurately calculate the optimal solar angle throughout a year in a specific city.

Pros	Cons
Calculates optimal tilt angle for a specific city of any country
Shows optimal angle for each month

Home Page

footprinthero.com

footprinthero.com is another free solar angle calculator website. It helps users calculate the right tilt angle for their solar panels to get the optimal level of sun every day. To do that, it uses your current location. Users can also submit a specific location by providing the city name or zip code. After the calculation, it shows optimal tilt angles by seasons (Spring, Summer, Fall, and Winter) and months (January to December). It even offers 5 different methods to calculate solar panel tilt angle. Now, follow the below steps.

How to calculate solar angle online using footprinthero.com:

Visit this website and access the solar panel tilt angle calculator.
After that, use your current location or manually enter the zip code of your location.
Next, view optimal tilt angles by seasons and months.

Additional Features:

This website offers multiple solar calculators like Off-Grid Solar Battery, Off-Grid Solar Load, Solar Panel Series & Parallel, Solar Panel Azimuth Angle, etc.

Final Thoughts:

It is another good online solar angle calculator website that anyone can use to find the right solar panel tilt angle for a specific location.

Pros	Cons
Calculates optimal tilt angle for specific locations
Shows optimal angle for each month and four seasons

Home Page

gml.noaa.gov

gml.noaa.gov is another free online solar angle calculator website. Through this website, users can find out the Solar Declination, Solar Azimuth, Solar Elevation, and Cosine of Solar Zenith Angle. To calculate all these parameters, it uses the Location (City Name or Latitude & Longitude) and Time (Month, Date, Year, and Exact Time) values. However, it doesn’t offer much data related to the calculation process. Now, check out the below steps.

How to calculate solar angle online using gml.noaa.goa:

Go to this website using the given link.
After that, enter the city name or Latitude & Longitude values.
Now, enter a specific time at which you want to calculate the solar angle.
Finally, tap on the Calculate Solar Position button to view solar declination, solar azimuth, and solar elevation values.

Additional Features:

This website can also be used to track various atmospheric baseline observatories and observing networks.

Final Thoughts:

It is another simple online solar angle calculator website that can calculate multiple solar position values.

Pros	Cons
Calculates solar declination, solar azimuth, and solar elevation values
Can calculate the solar angle for a specific time and location

Home Page

sunsolartilt.com

sunsolartilt.com is another free online solar angle calculator website. This website offers a simple solar panel tilt angle calculator that either fetches your current location or uses a submitted zip code to determine the optimal solar antenna tilt angle. It also shows the antenna tilt angle for all seasons (Sprint, Summer, Fall, and Winter) and months (January to December). Now, follow the below steps.

How to calculate solar antenna tilt angle online using sunsolartilt.com:

Visit this website and go to its Tilt Angle Calculator.
After that, select the Use your current location option or submit your zip code.
Next, view the optional solar panel tilt angle for all seasons and months.

Additional Features:

On this website, users can browse and purchase various types of solar panels for their RVs.

Final Thoughts:

It is another good online solar antenna tilt angle calculator website that anyone can use to find the optimal solar panel tilt angle throughout the year.

Pros	Cons
Uses zip or current location to calculate the solar angle
Shows solar panel tilt angle for all seasons and months

Home Page

shopsolarkits.com

shopsolarkits.com is another free online solar angle calculator website. Like other similar websites, it also offers a Solar Panel Tilt Angle Calculator. It uses either your current location or ZIP code to determine the right solar panel tilt angle. It also calculates and shows the optimal tilt angle by season (Spring, Summer, Fall, and Winter) and month (January to December). However, it doesn’t offer many details related to this calculation. Now, follow the below steps.

How to calculate solar angle online using shopsolarkits.com:

Go to this website and find the Solar Panel Tilt Calculator.
After that, click on the Use your current location button to fetch your location or manually enter a ZIP code.
Next, view the optimal solar panel tilt angle and optimal tilt angle for various seasons and months.

Additional Features:

On this website, users can browse and purchase solar panels and various related components.

Final Thoughts:

It is another capable yet simple-to-use online solar angle calculator website that helps users determine the right solar panel tilt angle.

Pros	Cons
Uses location to calculate the solar angle
Shows solar panel orientation angle for each month and season

Home Page

Frequently Asked Questions

What is the minimum roof angle for solar panels?

The minimum roof angle for solar panels depends on various factors, including the type of solar panel mounting system used and the latitude of the location. In general, solar panels can be installed on roofs with relatively low angles.

What is tilt angle?

The tilt angle, in the context of solar panels, refers to the angle at which the solar panels are mounted relative to the horizontal plane. It is the angle between the surface of the solar panels and a line perpendicular to the ground. The tilt angle plays a crucial role in optimizing the performance and efficiency of solar panels by affecting the angle at which sunlight strikes the panels.

What is PV azimuth?

The PV azimuth refers to the compass direction in which a solar photovoltaic (PV) array or solar panel system is oriented. It is the angle between the line pointing towards true south and the line connecting the center of the solar array or panels. The PV azimuth is measured in degrees clockwise from true north.

How do you aim solar panels?

Aiming or orienting solar panels involves setting the tilt angle and azimuth angle to maximize their exposure to sunlight, optimizing energy capture. The ideal orientation depends on factors such as the geographic location, specific goals of the solar installation, and the characteristics of the site.

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