Doors can be quite the statement piece in every home. They offer more than just a mode to enter or leave a room or property. The right entry door can also improve the curb appeal and overall appearance of your home. But before you start shopping for the different styles of doors, you need to know the average height of a door. Understanding it can help you get the perfect door for every entry across your house — and choose the right hinges to hang it properly.
Standard Door Sizes at a Glance
| Door Type | Standard Height | Standard Width | Notes |
|---|---|---|---|
| Interior Door | 80" (6'8") minimum | 28"– 32" | 78" allowed by some codes (6'6" door) |
| Exterior / Entry Door | 80"– 96" minimum | 36" | Custom heights available above 96" |
| Sliding Glass Door | 80" standard | 60"– 72" | Width varies by panel count |
Standard Width of Door
The standard width of a door can vary as there are various styles and sizes of doors on the market today. But the standard width of common doors for properties in the U.S. is approximately 36 inches. Other door sizes that are easy to find can be 30 or 32 inches. When measuring the width of a door, always measure the door panel only and exclude the door frame around it.
Standard Width of Interior Door
Interior doors are any door installed inside your home. The minimum height and width requirements of interior doors are set by the International Residential Code. The width of most standard interior doors can be between 28 and 32 inches. Customized doors can vary in width.
Standard Height of Interior Door
The Code generally requires the standard height of the interior door to be a minimum of 80 inches, but there are certain codes that allow doors to be 78 inches. Interior doors that measure 80 inches are 6 feet and 8 inches — this is why they are called 6/8 doors. For interior doors that measure 78 inches, they are known as 6/6 doors.
Standard Width of Exterior Door
Exterior doors are much larger compared to interior doors. However, their width is usually 36 inches. There are also certain styles of exterior doors that are much smaller, with a standard size of only 30 or 32 inches.
Standard Height of Exterior Door
Entry or exterior doors must have a minimum height of 80 inches. They can extend up to 96 inches, but there may also be customized exterior doors that can go even taller.
Sizes of Sliding Glass Door
Sliding glass doors are usually standard in size when it comes to their height. However, their width may vary depending on where they are to be installed. Builders normally will build a door frame that is standard in size, so when you need to replace your sliding glass door, it will be easy to find the right size without customization.
Height of Sliding Glass Door
The height of sliding glass doors is usually fixed at 80 inches, but custom openings may have taller heights. However, you may find it difficult to find standard-size sliding glass doors should you need to replace them in the future.
Width of Sliding Glass Door
Most sliding glass doors measure 60 to 72 inches in width, but today's market offers many different options. For multiple panel sliding glass doors, the width can be even wider. It all boils down to the frame that you are looking at.
Door Height and Hinge Selection
Once you know your door height, the next step is choosing the right hinges. Door height directly affects how many hinges you need and what size hinge is appropriate. As a general rule, one hinge is required for every 30 inches of door height. The table below summarizes the most common door height and hinge combinations for residential and commercial applications.
| Door Height | Door Type | Recommended Hinges | Suggested Hinge Size |
|---|---|---|---|
| Up to 60" | Lightweight interior | 2 hinges | 3.5" x 3.5" |
| 60"– 90" (standard interior) | Hollow or solid core interior | 2–3 hinges | 3.5" x 3.5" |
| 80"– 90" (standard exterior) | Solid exterior or entry door | 3 hinges minimum | 4" x 4" |
| 90"– 120" | Oversized or heavy exterior | 4 hinges | 4.5" x 4.5" or larger |
| Over 120" | Commercial or custom door | 5+ hinges | Commercial grade hinges |
Conclusion
Once you have a better understanding of the height of your doors, you will be able to determine how many hinges you need per door. For a deeper dive, read our guide on how many hinges are needed per door, and our article on common hinge sizes for doors, cabinets, and gates. If you're ready to install, our door hinge installation guide walks you through the full process step by step.
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If you have any questions about our door hinges, feel free to contact us today.