Standard French Door Size: The Complete Guide for Homeowners

Are you in love with the French doors and are planning to install them? They are extraordinary, but there is one thing you need to know before installing them: the correct French door size. And that’s why we have come up with this guide, 

In this article, we will share everything you need to know, from standard French door sizes for single and double French doors, to rough openings, measuring tips, and even when it makes sense to go custom. 

Plus, we will share size charts, practical examples, and some pro tips that will help you avoid costly mistakes. Now, let’s get started without waiting any further. 

What Is the Standard Size of a French Door?

There isn’t just one standard size for a French door; there are standard ranges. Most of the spaces are covered within these ranges, except for a few odd ones. In that case, you will need to go with custom sizes. Anyway, the standard dimensions include:

• Height: About 80 inches is the norm (same as interior doors). There are taller options with 84 and 96 inches as well for taller areas.
• Width: Single doors are generally 18 to 36 inches wide. Double French doors usually total 48–72 inches across.
• Thickness: It is either 1 ¾″ or 1 9/16″.

These sizes handle most openings in modern houses. Still, exact numbers can shift a little depending on the panel style and whether the door is inside or outside. Let’s examine the standard dimensions for each one individually. 

Standard Single French Door Sizes

Single French doors are generally used in narrow hallways, small rooms, and areas where you don’t have the space for two swinging panels. The most common sizes for these doors include:

People generally get confused with width. If you are also one of them, 30 or 36 inches works well for most of the spaces. It is enough for daily use and has a good appearance as well. 

Standard Double French Door Sizes

When people think of French doors, they think of double panels swinging. It’s because they are a common choice for patios, decks, or larger living areas. Thinking about this setup? Here are the usual sizes for double French doors:

By the way, if you are planning to bring in big pieces of furniture, doors with 60 or 72-inch widths are ideal. That way, you’ll have enough space for easy movement.  

Exterior French Door Sizes

For exterior spaces, such as gardens, balconies, and patios, French doors tend to be wider than their indoor counterparts. The concept is straightforward: more people, larger opening, better atmosphere. Standard dimensions include:

• 80” x 48” (narrow pair, great for smaller patios)
• 80” x 60” (the most common patio size)
• 80” x 72” (For wide openings)
• 80” x 96” (For homes with high ceilings)

Tall doors are better for homes with tall ceilings or modern designs. These create a special floor-to-ceiling effect. 

Interior French Door Sizes

French interior doors are often used for dividing rooms, creating home offices, and in hallways. These are generally narrow as compared to exterior ones. However, there are taller ones as well for spacious interiors. Standard sizes include:

• 80” x 30” (narrow, works well for smaller rooms)
• 80” x 36” (classic single size)
• 80” x 48” or 60” (double interior doors)
• 84” or 96” ( For tall doors)

Interior French doors don’t need weatherproofing, so you have more flexibility in style and size. These dimensions are for French interior doors, but for other designs, refer to this standard interior door sizes guide. 

Rough Opening Sizes for French Doors

A common mistake is thinking the door itself should match the opening exactly. In practice, that’s not the case. This extra space is to avoid problems during installation.

As a simple rule of thumb, add about 2 inches to the width and 2 ½ inches to the height when figuring out your rough opening.

And before we get into the chart, let’s pause on a typical case: if you’re dealing with a 36-inch French door, it’s worth checking the rough opening sizes for a 36-inch door guide. If you have a different size, check out this french door rough opening size chart:

And if you have double French doors with two slabs, use the following approach:

• Let’s suppose one slab width is equal to 30, then the total will be 60
• Then apply the +2" rule once for the pair: Rough opening width = (sum of slab widths) + 2" = 62"
• Height uses the same +2½" rule.

So two 30 × 80 slabs → Rough Opening = 62 × 82½. For more information about rough opening, check out this guide on door rough opening size.

How to Measure for French Doors?

Before you start shopping, the most crucial step is knowing your measurements. Even though standard French door sizes exist, no two homes are exactly alike — especially older ones. 

A small measurement error can cause problems such as gaps and expensive returns. To avoid this, we have shared easy instructions on how to measure your doors. Let’s start with the first step. 

Step 1: Gather Your Tools

You don’t need anything fancy, just:

• A tape measure (If you have never used it before, you can learn how to use a tape measure from here.
• A pencil and a notepad
• Optional: a simple sketch of your doorway to jot down measurements

Step 2: Clear the Area

Shift any furniture or décor out of the way to create room to work. Make sure the frame is easy to reach and check that it isn’t bent or damaged — that could throw off your measurements. 

Step 3: Measure the Width

The 3rd step, and an essential step in measuring French door sizes, is checking the width. Measure it from three different places: top, middle, and bottom. 

Since walls and frames are rarely perfectly square, recording all three values provides a reliable reference. Go with the smallest one as your width.

Step 4: Measure the Height

Do the same thing vertically — measure on the left, center, and right sides of the frame. Not all those measurements are down, so use the smallest number.

Step 5: Measure the Depth

This is the thickness of the wall where the door frame will sit. Depth ensures the new French door frame won’t stick out awkwardly or fall short.

Always double-check measurements. In construction, the saying goes: “Measure twice, cut once.” With doors, it’s “Measure twice, order once.”

And once you are ready to order, here are the top 15 wood door manufacturers in China to help you find the ideal brand for yourself. 

Custom vs. Standard French Door Sizes

Now that you know the standard measurements, let’s talk about when they work — and when they don’t.

Standard French Door Sizes

Standard door sizes are generally used for most places. It is because newer houses and remodels often use standard dimensions. These are also more affordable due to mass production. 

Plus, these are readily available, meaning you won’t need to wait after ordering. Take a look at this George Construction door and window catalog to get an idea of standard sizes. 

Custom French Door Sizes

However, standard sizing doesn’t work for every place. You will need custom-sized French doors if: 

• You live in an older home with unique door frames.
• You want an extra-wide opening (over 72 inches).
• You have high ceilings and want taller doors (over 96 inches in height).
• You’re aiming for a statement look that standard doors can’t achieve.

These are costly but highly customizable. You have freedom in material, color, design, and everything, but there's a catch.

These may cause longer delivery times because they are not readily available and are made upon demand. Keep these things in mind and then choose the most suitable option according to your needs. 

Common Mistakes When Choosing French Door Sizes 

While choosing the French door size, there are a few mistakes people commonly make that can cause problems later. We have listed a few common ones below so you can see them. These include:

• Ignoring the Rough Opening: The slab size alone won’t cut it. The frame and shims require additional space, so measure beyond the door itself.
• Neglecting Swing Room: Since French doors open wide, tight spaces can quickly become a problem. If space is limited, sliding options provide the same charm without the hassle.
• Settling for Narrow Doors: Small-sized doors like 30-inch doors look sleek, but they may not be the right choice. For example, you may face problems in moving bigger size furniture with these doors.
• Overlooking Ceiling Scale: If you have high ceilings, don't go with small doors; they can throw off the entire design. 96-inch doors can be a good choice in this case. 
• Blocking Furniture Flow: Even beautiful double doors won’t work if they collide with sofas, dining sets, or cabinets. Always map out your room layout in advance.

Final Thoughts

Selecting the French door dimensions might look complicated, but once you consider the basics like door type, opening dimensions, and room function. 

The process is much more straightforward. Standard French door size fits most homes, though custom solutions are worth exploring if your design requires it.

The best tip? Take time with your measurements. A quick recheck of height, width, and swing space can make the difference between frustration and a flawless fit. In the end, those few extra minutes help your French doors look right, work smoothly, and complement your style.

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