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You will see that most doors in the United States are 80 inches tall, which is the same as 6 feet 8 inches. This average door size is commonly used for both interior and exterior doors in most homes. Builders and experts agree that this is the usual size. Some homes feature taller doors, such as 84 inches or 96 inches, which are common in newer constructions. In contrast, older homes often have shorter doors.

Standard Door Height

Description

78 inches

Found in older homes built before the 1970s.

80 inches (6'8")

The most common height for inside doors today.

84 inches (7')

Used in new homes to make rooms look bigger.

96 inches (8')

Used for special and fancy home designs.

Key Takeaways

  • In the U.S., most doors are 80 inches tall. This is 6 feet 8 inches. People use this size for inside and outside doors. Taller doors, like 84 inches and 96 inches, are common in new homes. These doors make rooms look bigger and nicer. Old homes might have shorter doors. These are often about 78 inches tall. This shows that building rules were different before. When you pick a door, think about your ceiling height. Also, think about how your home looks. This helps you choose the right door. It is very important to measure carefully when replacing a door. Always measure more than once to make sure it fits.

Average Door Height

How Tall is the Average Door?

You might wonder, how tall is the average door? In the United States, the standard door height is 80 inches, which equals 6 feet 8 inches. This measurement is the most common for both interior and exterior doors. Builders use this size because it fits well with typical ceiling heights in homes. You will see this standard door height in most houses built today.

Some homes have taller doors. Modern homes often feature doors that are 84 inches (7 feet) or even 96 inches (8 feet) tall. These taller doors make rooms feel bigger and more open. If you live in an older house, you might find shorter doors, sometimes as low as 78 inches. Custom-built homes can have doors of almost any height, depending on your needs and style.

Here is a table that shows the most common average door heights for different types of homes:

Home Type

Common Door Height

Notes

Modern Homes

80 inches (6'8")

Standard height for most interior and exterior doors

Older Homes

80 inches (6'8")

Often the same as modern homes, but some variation

Custom-Built

Varies

Custom sizes based on your preferences

You can see that the 80-inch standard door height is very popular. However, you may choose a taller or shorter door to match your home's design.

Tip: If your ceilings are higher than 8 feet, you might want a taller door. Taller doors add elegance and make your space feel grand.

Standard Door Height in Homes

When you look at homes in the U.S., you will notice that the standard door height for both interior and exterior doors is usually 80 inches. This size works well for most rooms and hallways. The standard size for interior doors is 80 inches tall, and the standard size for exterior doors is also 80 inches. Some building codes allow for 78-inch doors in certain cases, but 80 inches remains the most common.

Here is a table that compares standard door heights for different door types:

Door Type

Standard Height

Custom Height Options

Interior Doors

80 inches

78 inches (some codes)

Exterior Doors

80 inches

Up to 96 inches

You may see taller doors in homes with high ceilings. For example, doors that are 84 inches or 96 inches tall are popular in new houses. These doors help create a more open and luxurious look. If you want your home to feel bigger, you can choose a taller door.

Note: Ceiling height affects your choice of door height. Taller doors look best in rooms with high ceilings. They make the space feel more open and elegant.

You should also know about nominal and actual door sizes. Builders use nominal sizes as a reference, but the actual size of your door may be a little smaller. For example:

  • Nominal door sizes are standard measurements used in construction.

  • Actual door sizes may be slightly less than the nominal size because of installation needs.

  • A nominal 32-inch door may actually measure 31-¼ or 31-¾ inches.

This difference helps the door fit into the frame and open smoothly.

You might also want to compare U.S. door height standards to those in other countries. Here is a table for reference:

Region

Interior Doors (inches)

Exterior Doors (inches)

USA

80

80–96

Europe

77–80

79–92

Asia

78–84

80–96

Standard Door Size for Commercial Buildings

If you look at commercial buildings, you will find that the standard door height is usually between 80 and 96 inches. Building codes require a minimum clear opening height of 80 inches for most doors. Some exceptions allow for 78-inch doors if there is a door closer. The minimum headroom requirement is also 80 inches. In areas used for exits, the ceiling height must be at least 90 inches.

Here is a table that shows these requirements:

Requirement

Measurement

Standard Door Height

80 to 96 inches

Minimum Clear Opening Height

80 inches

Exception for Door Closers

78 inches

Minimum Headroom Requirement

80 inches

Ceiling Height in Means of Egress

7.5 feet (90 in)

You will see that commercial buildings often use taller doors to meet safety and accessibility rules. These rules help everyone move easily and safely through public spaces.

Metric Conversions for Door Heights

You may need to convert door heights to metric units. Here is a quick reference:

Feature

US/Imperial Standard

Metric Equivalent (Approx.)

Notes

Height

80 inches (6′ 8″)

2032 mm

The most common standard by far


84 inches (7′ 0″)

2134 mm

Popular in modern homes


96 inches (8′ 0″)

2438 mm

Used for high ceilings, luxury feel

Bar chart comparing US standard door heights in inches to metric equivalents in millimeters

Why Door Height Standards Matter

You should care about standard door heights because they make homes and buildings safer and more comfortable. These standards help you choose the right door for your space. They also make it easier to replace or upgrade doors in the future.

Over time, door height standards have changed. In the past, builders used larger doors for structural reasons. As building materials improved, doors became smaller and more practical. Today, you can choose from many standard door heights to match your needs and style.

When you select a door, always measure carefully. Think about your ceiling height, the look you want, and any building codes in your area. This way, you will find the perfect door for your home or business.

Door Size Variations

Regional Differences

Door sizes can be different based on where you live. In the Southeast, older homes often have doors that are only 78 inches tall. Newer homes in other places usually have doors that are 80 inches tall. Some modern homes use taller doors, like 84 or 96 inches. These taller doors fit high ceilings or special designs.

Here is a table that shows common door heights and where you might see them:

Door Height

Description

80 inches

Most common standard height for both interior and exterior doors.

78 inches

Common in older constructions, especially in the Southeast.

84 inches

Taller option for a modern look, less common than 80 inches.

96 inches

Used for exterior doors in new homes for design and accessibility.

The style of your house also matters. Southern homes sometimes have big entryways with double doors. Older city homes often have smaller and narrower doors. Always measure your doorway before you buy a new door. This is important if your house is old or has a special style.

Interior vs. Exterior Door Sizes

Inside and outside doors are not always the same size. Interior doors are usually between 78 and 80 inches tall. Their width is usually 24 to 36 inches. They are often 1-3/8 inches thick. Exterior doors are taller and thicker. They are usually 80 to 96 inches tall, 36 inches wide, and 1-3/4 inches thick. The extra thickness helps keep your home warm and safe.

Here is a quick comparison:

Door Type

Typical Height

Typical Width

Thickness

Interior Doors

78-80 inches

24-36 inches

1-3/8 inches

Exterior Doors

80-96 inches

36 inches

1-3/4 inches

Different rooms may need different door sizes. Bedroom doors are usually 80 inches tall and 30-36 inches wide. Closet doors can be much smaller, sometimes only 24 inches wide. Garage doors and fancy homes may use doors as tall as 96 inches. Think about wheelchair access when picking door sizes. This is important for main rooms and bathrooms.

Specialty and Custom Doors

Special doors, like sliding and French doors, have their own sizes. Most sliding and French doors are 80 inches tall. You can also find them at 84 or 96 inches for a bigger look. Custom doors can be made to fit almost any space. They cost more because they need special materials and measurements.

Door Type

Standard Height Range

Additional Options

French Doors

80 inches

84 inches, 96 inches

Sliding Doors

80 inches

84 inches, 96 inches

If you need a door for wheelchair use, look for at least 32 inches of clear width. The Americans with Disabilities Act (ADA) has rules to help everyone move safely. These rules include:

  • Doors must open to 90 degrees.

  • Hardware must be easy to use with one hand.

  • There must be enough space for a wheelchair to turn around.

ADA says door openings must be at least 32 inches wide. This helps people who use wheelchairs get through doors easily. Always check these rules if you want your home to be easy for everyone to use.

Measuring and Choosing Doors

How to Measure Door Height

You need the right tools for accurate door height measurements. Use a tape measure with clear markings. A carpenter’s level helps you check if the floor or frame is even. Write down your numbers on a notepad so you do not forget them.

Follow these steps for how to measure your door:

  1. Measure from the bottom of the door slab to the top. Do this on the left side, right side, and in the center.

  2. Use the largest number you find. Floors and frames can be uneven, so this gives you the most accurate result.

  3. Repeat the process for the width. Measure across the top, middle, and bottom of the door.

  4. Check the thickness by measuring the edge of the door.

  5. Take photos with your smartphone for reference if you need to show someone else.

Tip: Always measure more than once. Double-check your numbers before buying a new door.

Common Measurement Mistakes

Many people make errors when measuring for door replacement. Here are mistakes you should avoid:

  • Measuring only once. Doors and frames can shift over time, especially in older homes.

  • Ignoring the rough opening. You need to measure the space inside the frame, not just the door slab.

  • Forgetting about new flooring. If you add carpet or tile, the door might drag or leave a gap.

  • Not checking wall thickness. This can cause problems if you order a pre-hung door.

  • Rounding up your numbers. Always round down to the nearest 1/8 inch for a better fit.

  • Skipping the use of a level. Frames are not always straight, so check for evenness.

Note: Careful measuring helps you avoid gaps, sticking doors, or costly returns.

Selecting the Right Standard Door Size

Choosing the right door means more than picking a size. Think about the room’s function, the direction the door will swing, and the style you want. Accurate measurements are important for a good fit and easy installation. The standard measurement for most interior doors is 80 inches tall, but always check your space.

If your project is simple and your measurements match a standard size, you can try installing the door yourself. For custom doors, patio doors, or if your home has uneven walls, you should call a professional. Experts have special tools and skills to handle tricky jobs and make sure your door works well.

Tip: When in doubt, ask a professional for help. This saves time and prevents mistakes.

You now know that most doors measure 80 inches tall, but taller or shorter options exist. Always measure your space with care before buying. When choosing a door, think about these factors:

  • Match the door’s style to your home’s look.

  • Consider privacy, especially with glass doors.

  • Check how much maintenance each material needs.

For custom or complex projects, you may face challenges like noise control or fitting unique sizes. A professional can help you get the best results.

FAQ

How do you measure your door for replacement?

You measure from the top to the bottom of the door slab. Check the width at three points. Measure the thickness at the edge. Write down each number. This helps you find the right standard door size.

What is the standard door height for homes?

You usually see a standard door height of 80 inches in most homes. Builders use this measurement for both interior and exterior doors. Taller doors, like 84 or 96 inches, appear in modern houses.

Why do average door heights matter for wheelchair accessibility?

Average door heights and widths help people move easily. For wheelchair accessibility, you need a clear opening of at least 32 inches. Standard door heights make homes safer and more comfortable for everyone.

Can you use a different standard size for exterior doors and interior doors?

You can choose different sizes. The standard size for exterior doors is often 36 inches wide and 80 inches tall. The standard size for interior doors is usually 32 inches wide and 80 inches tall. Always check your door height measurements.

What mistakes should you avoid when measuring for door replacement?

You should avoid measuring only the door slab. Always include the rough opening. Do not forget to check for uneven floors. Use a level for accuracy. Careful measuring helps you follow door height standards.

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