How to Measure a Door Hinge

// Hardware Basics

6 min read

How to Measure a Door Hinge

Whether you're replacing a worn-out hinge or upgrading your door hardware, measuring your existing door hinge correctly is the first step to ordering the right replacement. While it may seem simple, even a small measurement error can result in a hinge that doesn't fit properly.

At Total Access Security, we help homeowners, businesses, and facility managers find the correct hardware every day. Follow this simple guide to accurately measure your door hinges.

Step-by-step measuring guide

Step 1: Remove the Hinge

For the most accurate measurements, remove one hinge from the door. While some dimensions can be measured with the hinge installed, removing it allows you to measure every detail without obstruction.

Tip: Support the door before removing multiple hinges to prevent the door from shifting or falling.

Step 2: Measure the Height

Open the hinge completely so it lies flat. Measure from the very top of the hinge to the very bottom.

Common residential hinge heights include:

Commercial doors typically use 4½-inch or 5-inch hinges.

Step 3: Measure the Width

With the hinge fully open and laying flat, measure from the outside edge of one leaf to the outside edge of the other leaf. Do not measure the hinge while it is folded closed, as this will give an incorrect width.

Common widths include:

Many hinges are square, meaning the height and width are the same.

Step 4: Determine the Corner Radius

The corners of a hinge are either:

If your hinge has rounded corners, measure the radius using a ruler or compare it to a radius template. Most residential doors use either 1/4-inch or 5/8-inch radius hinges.

Step 5: Count the Screw Holes

Count the total number of mounting holes. Also note the hole pattern, since not every hinge uses the same spacing.

Most residential hinges have six screw holes, while larger commercial hinges may have eight or more.

Step 6: Measure the Hinge Thickness

Using calipers is best, but a ruler can provide a close estimate.

Typical hinge thicknesses include:

Heavier doors generally require thicker hinges for greater durability.

Step 7: Check the Bearing Type

Look at the center barrel (knuckle) of the hinge.

Common types include:

Commercial buildings often use ball bearing hinges because they provide smoother operation and longer service life for heavy doors.

Step 8: Identify the Material and Finish

Knowing the finish helps ensure your replacement matches your existing hardware.

Popular finishes include:

For exterior doors or corrosive environments, stainless steel hinges are often the best choice.

Common door hinge sizes

Door thickness	Typical hinge size
1⅜-inch interior door	3½" × 3½"
1¾-inch residential exterior door	4" × 4"
Commercial hollow metal door	4½" × 4½"
Heavy commercial door	5" × 5"

Always verify your measurements before ordering, as manufacturers may have different specifications.

When you're not sure

If you're unsure about your hinge size, don't guess. Take clear photos of the hinge from the front, side, and with the hinge open. Include a ruler in the photo whenever possible. This makes it much easier to identify the correct replacement.

The experts at Total Access Security can help identify your hinge and recommend the proper replacement, whether it's for a residential door, commercial storefront, office building, school, hospital, or access-controlled entrance.

// Need help finding the right hinge?

With more than 45 years of locksmith experience, Total Access Security has helped thousands of customers select the correct door hardware. Contact us for expert advice and professional service.

TOTAL ACCESS

EST. 2007

// Hardware Basics

6 min read

How to Measure a Door Hinge

Whether you're replacing a worn-out hinge or upgrading your door hardware, measuring your existing door hinge correctly is the first step to ordering the right replacement. While it may seem simple, even a small measurement error can result in a hinge that doesn't fit properly.

At Total Access Security, we help homeowners, businesses, and facility managers find the correct hardware every day. Follow this simple guide to accurately measure your door hinges.

Step-by-step measuring guide

Step 1: Remove the Hinge

For the most accurate measurements, remove one hinge from the door. While some dimensions can be measured with the hinge installed, removing it allows you to measure every detail without obstruction.

Tip: Support the door before removing multiple hinges to prevent the door from shifting or falling.

Step 2: Measure the Height

Open the hinge completely so it lies flat. Measure from the very top of the hinge to the very bottom.

Common residential hinge heights include:

Commercial doors typically use 4½-inch or 5-inch hinges.

Step 3: Measure the Width

With the hinge fully open and laying flat, measure from the outside edge of one leaf to the outside edge of the other leaf. Do not measure the hinge while it is folded closed, as this will give an incorrect width.

Common widths include:

Many hinges are square, meaning the height and width are the same.

Step 4: Determine the Corner Radius

The corners of a hinge are either:

If your hinge has rounded corners, measure the radius using a ruler or compare it to a radius template. Most residential doors use either 1/4-inch or 5/8-inch radius hinges.

Step 5: Count the Screw Holes

Count the total number of mounting holes. Also note the hole pattern, since not every hinge uses the same spacing.

Most residential hinges have six screw holes, while larger commercial hinges may have eight or more.

Step 6: Measure the Hinge Thickness

Using calipers is best, but a ruler can provide a close estimate.

Typical hinge thicknesses include:

Heavier doors generally require thicker hinges for greater durability.

Step 7: Check the Bearing Type

Look at the center barrel (knuckle) of the hinge.

Common types include:

Commercial buildings often use ball bearing hinges because they provide smoother operation and longer service life for heavy doors.

Step 8: Identify the Material and Finish

Knowing the finish helps ensure your replacement matches your existing hardware.

Popular finishes include:

For exterior doors or corrosive environments, stainless steel hinges are often the best choice.

Common door hinge sizes

Always verify your measurements before ordering, as manufacturers may have different specifications.

When you're not sure

If you're unsure about your hinge size, don't guess. Take clear photos of the hinge from the front, side, and with the hinge open. Include a ruler in the photo whenever possible. This makes it much easier to identify the correct replacement.

The experts at Total Access Security can help identify your hinge and recommend the proper replacement, whether it's for a residential door, commercial storefront, office building, school, hospital, or access-controlled entrance.

// Need help finding the right hinge?

With more than 45 years of locksmith experience, Total Access Security has helped thousands of customers select the correct door hardware. Contact us for expert advice and professional service.

TOTAL ACCESS