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Here is a list of 3 free online gazebo calculator websites. A gazebo is octagonal shaped structure which is mostly built in a park or garden (usually located in center). These sites work differently and help you calculate gazebo layout, length of hips, length of center rafter, length of sides, roof angle, number of rafters needed, outer angles, total roof area, etc.

You can also use some unique features. For example, you can get values for all sides by just entering the value of a single side, check dummy image to understand about gazebo, find calculations for roof and floor separately, save your calculation for later, etc.

Let’s check these free online gazebo calculators one by one.

## Blocklayer

Blocklayer website has one of the best gazebo calculator websites on this list. This link will help you open that calculator. It has some unique features which make it stand apart from the crowd. It lets you:

• Select number of sides (4, 8, 10, 12, 6, etc.) for gazebo. So, you don’t have to get calculations for the default octagonal shape.
• Set Rafter thickness and depth.
• Enter side lengths.
• Add roof extension size in inches.
• Set Eave overhang.
• Set exact or equal spacing.
• Add center rafter or not.
• Enter value for rafter spacing.

Based on all these inputs, it will provide the results. You can get the output for roof and floor which will include floor width at widest point, number of hips needed, center rafters, creepers, roof angle, hip rafter angle, king post radius, roof segment side length, center length, inner angle, outer angles, total roof area, etc. The feature to set sides, angle, and rotation angle using the sliders is also there.

This website also provides the diagrams for roof and floor along with calculations, hip, center, roof segments, etc. Your calculations can also be saved for later use. All of these features make it a great option for gazebo calculation.

## LearnFraming.com

LearnFraming.com brings a very good gazebo calculator tool. You can access that tool using this link. It lets you calculate layout of gazebo, length of center rafters (to center point), pitch of the hips, length of sides, and length of hips (to center point). A brief description is also provided for each output. This will help you understand about each option.

You can enter width of gazebo (in feet and inches including the fraction) and roof pitch using the drop down menu. Once you’ve done that, you will get the output calculations quickly.

## Octagon/Gazebo Layout Calculator

This is the simplest gazebo calculator website on this list. Octagon/Gazebo Layout Calculator website is mainly helpful for roof structure of gazebo. Here is the link. It provides a sample octagon frame where alphabets are marked for all sides of gazebo. For same alphabets, you need to enter the values (in feet and inches) to get the output.

The good thing is you enter the value in one field and the values for rest of the fields are filled automatically. The results come good. There are no other options.

We’ve also covered best deck board calculators for you.

### The Conclusion:

Here I close this list which covers good and free gazebo calculator websites. The most important website on this list for gazebo layout calculation is the first website. It is also my favorite for this purpose.

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