Brick Archway Calculator

Solve your calculation fast and easy


Building an Arched Brick Fireplace: A Step-by-Step Guide

Android app developer

An arched brick fireplace is a timeless addition that can enhance the aesthetic appeal and warmth of any home. Constructing an arched brick fireplace may seem daunting, but with the right tools, materials, and techniques, it can be a rewarding and achievable project. This article provides a comprehensive guide on how to build an arched brick fireplace, including the calculation of the arch for a seamless construction process.

Materials and Tools Needed:

  • Bricks

  • Mortar mix

  • Cement

  • Sand

  • Metal reinforcing bars

  • Plywood

  • Measuring tape

  • Bricklaying trowel

  • Jointer

  • Mason's hammer and chisel

  • Masonry brick saw (dry or wet-cut)

  • Masonry saw

  • Safety goggles

  • Work gloves

Step 1: Designing the Arch

Before starting the construction process, it's crucial to determine the dimensions and design of the arched brick fireplace. The arch's size will depend on the fireplace's desired width, height, and shape. For a symmetrical arch, calculate the radius (R) using the formula R = (W² + H²) / (8 × H), where W is the fireplace's width and H is the desired height.

Calculating and Designing the Arch Using the "Brick Arch Calculator" App

To simplify the process of calculating and designing the arch for your arched brick fireplace, you can utilize the "Brick Arch Calculator" application available on Google Play. This app is designed specifically for determining the dimensions and layout of arches using bricks.

Here's how you can use the "Brick Arch Calculator" app to calculate and design the arch for your fireplace:

  • Select Arch Type and Style:

    The "Brick Arch Calculator" app offers various arch types and styles to choose from, including semicircular, segmental, and Gothic. Select the arch type and style that best suits your design preferences and complements the overall aesthetic of your space.

  • Enter the Required Parameters:

    The app will provide a user-friendly interface where you can input the necessary parameters to calculate the arch. Typically, you will need to provide the dimensions of the desired fireplace opening, such as the diameter or height of the arch, and the specific brick dimensions you plan to use, including brick width, height, and joint thickness between bricks.

  • Generate Calculation Results:

    Once you have entered all the required parameters and made your arch style selection, tap the "Calculate" button within the app. The "Brick Arch Calculator" will process the information and provide you with the calculated dimensions for the arch, including the radius, height, number of the bricks and other relevant measurements.

  • Review and Adjust:

    Carefully review the calculation results provided by the app. Ensure that the arch dimensions align with your design vision. If necessary, you can make adjustments within the app to modify the arch's parameters until you achieve the desired look.

By utilizing the "Brick Arch Calculator" app, you can streamline the process of calculating and designing the arch for your arched brick fireplace, ensuring precision and accuracy in your construction project.

Download and install the application from:

Get it on Google Play

* Note: This new features are available in the next update!

Step 2: Preparing the Foundation

Ensure you have a solid foundation for your fireplace. Build a concrete footing using cement and metal reinforcing bars to provide stability and support for the weight of the structure. Consult a structural engineer or local building codes to determine the appropriate size and specifications for your foundation.

Step 3: Constructing the Arch Form

To create the arch form, cut a plywood sheet into the desired shape of your arch using a masonry saw. The plywood should match the calculated radius (R) from Step 1. Secure the plywood form to the foundation using temporary supports.

Step 4: Laying the Bricks

Begin laying the bricks from the sides of the arch form, working your way upwards. Apply a layer of mortar on the foundation and the bottom of each brick before placing it. Use a level to ensure the bricks are plumb and level with each other. Use a bricklaying trowel to spread mortar between each brick, maintaining a consistent joint thickness. Repeat this process until the arch is complete.

Step 5: Shaping the Bricks

As you approach the top of the arch, you will need to shape the bricks to form the desired curvature. Use a masonry brick saw (dry or wet-cut) or mason's hammer and chisel to carefully shape the bricks to fit the arch's contour. Take your time to ensure the bricks fit snugly and maintain the arch's shape.

Step 6: Applying the Key Brick

The key brick is the keystone that holds the arch together. It is crucial for stability and strength. Measure and cut a brick to fit as the key brick in the center of the arch. Apply mortar to the bottom and sides of the key brick, and carefully place it into position. Use a jointer to smooth out the mortar joints around the key brick.

Step 7: Finishing Touches

Allow the mortar to cure according to the manufacturer's instructions. Once the mortar is fully cured, remove the arch form and any temporary supports. Use a wire brush to clean any excess mortar or debris from the bricks. Apply a brick sealer or finish of your choice to protect and enhance the appearance of the fireplace.


Building an arched brick fireplace can be a rewarding project that adds charm and functionality to your living space. By following the steps outlined in this guide, you'll be able to construct a beautiful arched brick fireplace that becomes the focal point of your home. Remember to take necessary safety precautions and consult professionals if needed. With patience and attention to detail, you can create a stunning fireplace that will be enjoyed for years to come.

Brick Arch Calculator

Install from:

Get it on Google Play

* Note: This new features are available in the next update!