Determining the correct hinge size depends on several factors: the door's thickness, width, and weight. Simply choosing a size based on door width alone is insufficient.
Hinge Size Based on Door Thickness and Width
The table below, derived from Access Hardware's guide (https://www.access-hardware.com/blog/how-to/standard-door-hinge-size-and-how-to-size-hinges.html), provides recommendations based on door thickness and width:
| Door Thickness | Door Width | Recommended Hinge Size |
|---|---|---|
| 1 ⅜” | Up to 32” | 3 ½” |
| 1 ⅜” | 32” to 36” | 4” |
| 1 ¾” | Up to 36” | 4 ½” |
| 1 ¾” | 36” to 48” | 5” |
Important Note: This table provides a starting point. Heavier doors or doors made of denser materials may require larger, more robust hinges.
Number of Hinges Required
The number of hinges needed is also critical. Multiple sources suggest these guidelines:
- Doors up to 60 inches: Two hinges are generally sufficient.
- Doors over 60 inches, but not over 90 inches: Three hinges are recommended.
- Doors over 90 inches, but not over 120 inches: Four or more hinges might be necessary.
A common rule of thumb is one hinge per 30 inches of door height or fraction thereof. This ensures even weight distribution and prevents sagging.
Beyond Standard Doors:
For non-standard doors (e.g., gates, garage doors), different sizing considerations apply. For gates, a common guideline is a hinge length equal to one-third of the gate's width. Always consult the manufacturer's specifications for specialized hinges.
Remember to consider the material of your door and hinges' material and finish. For example, a solid wood door needs stronger hinges than a hollow-core door. Choose hinges with a finish that matches your door's hardware for a cohesive look.
