Transforming a Square Doorway into a Round One

Transforming a square doorway into a round one requires careful planning, precise execution, and the right materials. This process can be a bit challenging, but...

Mason Jul 25, 2026
The (Almost Too) Easy Way to Turn Your Plain Square Hallways Into Archways
The (Almost Too) Easy Way to Turn Your Plain Square Hallways Into Archways

Transforming a square doorway into a round one requires careful planning, precise execution, and the right materials. This process can be a bit challenging, but with the right guidance, you can achieve the desired result.

The (Almost Too) Easy Way to Turn Your Plain Square Hallways Into Archways
The (Almost Too) Easy Way to Turn Your Plain Square Hallways Into Archways

One of the primary concerns when considering this transformation is the structural integrity of the doorway. A square doorway is typically more stable than a round one, so you'll need to ensure that your new round doorway can support the weight of the door, the frame, and any additional features you may want to add.

a curved piece of wood sitting on top of a cement floor
a curved piece of wood sitting on top of a cement floor

Assessing the Doorway's Current State

Before you begin, it's essential to assess the current state of your doorway. Take note of its size, shape, and any existing features, such as hinges, handles, or locks. This will help you determine the best course of action for your transformation.

a pair of tape measures are shown next to a curved piece of cardboard that has been cut in half
a pair of tape measures are shown next to a curved piece of cardboard that has been cut in half

Measuring the Doorway

Measure the doorway's width, height, and any other relevant dimensions. This will give you a clear understanding of the materials you'll need to acquire and the tools you'll require for the transformation.

Adding Arches to Transform a Doorway
Adding Arches to Transform a Doorway

Choosing the Right Materials

When selecting materials for your round doorway, consider factors such as durability, aesthetic appeal, and cost. You'll need to choose a material that can withstand the weight of the door and any additional features you may want to add.

Designing the New Doorway

DIY arched doorway part 1
DIY arched doorway part 1

Once you have a clear understanding of the materials you'll be using, it's time to design your new round doorway. Consider the style and functionality you want to achieve, and sketch out a detailed plan before you begin.

Creating a Round Door Frame

To create a round door frame, you'll need to use a combination of materials, such as wood or metal, and a specialized tool, like a jigsaw or a router. You may also need to use a template or a stencil to ensure that your frame is perfectly round.

a man standing on a ladder holding a cardboard box
a man standing on a ladder holding a cardboard box

Adding the Door's Curved Shape

Once you have your round door frame, you can begin adding the door's curved shape. You can use a variety of techniques, such as cutting the door to fit the frame or using a specialized tool to create the curve.

DIY Transformation: Arch Your Way to a Beautiful Home
DIY Transformation: Arch Your Way to a Beautiful Home
Changing A Square Door to an Arch: Before & Afters - The Inspired Room
Changing A Square Door to an Arch: Before & Afters - The Inspired Room
DIY Arch Doorway Frame Under $30 — How to Add a Stunning Arch to Any Plain Rectangular Door
DIY Arch Doorway Frame Under $30 — How to Add a Stunning Arch to Any Plain Rectangular Door
DIY Arched Doorway on a Budget – Easy to Follow Tutorial
DIY Arched Doorway on a Budget – Easy to Follow Tutorial
DIY Transformation: Arch Your Way to a Beautiful Home
DIY Transformation: Arch Your Way to a Beautiful Home
a white door with the words diy arch no power tools
a white door with the words diy arch no power tools
How to Square off Archways in Your Home - Krista Howard Blog
How to Square off Archways in Your Home - Krista Howard Blog
an archway with the words diy arched doorway in black and white on it
an archway with the words diy arched doorway in black and white on it
How to Install Curved Trim
How to Install Curved Trim

With careful planning and precise execution, you can successfully transform your square doorway into a beautiful round one. Whether you're looking to add a touch of elegance to your home or create a unique feature for your business, this transformation can be a rewarding and stylish solution.

Visual guide

The (Almost Too) Easy Way to Turn Your Plain Square Hallways Into Archways
The (Almost Too) Easy Way to Turn Your Plain Square Hallways Into Archways
a curved piece of wood sitting on top of a cement floor
a curved piece of wood sitting on top of a cement floor
a pair of tape measures are shown next to a curved piece of cardboard that has been cut in half
a pair of tape measures are shown next to a curved piece of cardboard that has been cut in half
Adding Arches to Transform a Doorway
Adding Arches to Transform a Doorway
DIY arched doorway part 1
DIY arched doorway part 1
a man standing on a ladder holding a cardboard box
a man standing on a ladder holding a cardboard box
DIY Transformation: Arch Your Way to a Beautiful Home
DIY Transformation: Arch Your Way to a Beautiful Home
Changing A Square Door to an Arch: Before & Afters - The Inspired Room
Changing A Square Door to an Arch: Before & Afters - The Inspired Room

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