Are you renovating your home or starting from scratch with a new build? One often-overlooked decision can significantly impact both the functionality and design of your space: choosing the right internal door size.
Internal doors do more than separate rooms—they shape how your home looks and feels. From room proportions to mobility and accessibility, the correct internal door sizes ensures your home is both practical and visually appealing.
At DoorsDelivered.com, we’re here to help make your decision easier. This complete guide will walk you through UK door size standards, measurement tips, and key considerations to find the perfect internal door for your home.
Why Internal Door Size Matters
Choosing the wrong size can cause issues like poor fit, restricted movement, and visual imbalance. The right internal door size ensures:
- Smooth installation
- Comfortable movement between rooms
- Proper function with hinges and handles
- A clean, proportionate look across your interiors
- Standard Internal Door Sizes in the UK
Internal doors in the UK typically come in both imperial and metric sizes. Here’s a handy reference chart to compare the most common dimensions:
| Metric (mm) | Imperial (inches) | Feet & Inches |
|---|---|---|
| 1981 x 457 | 78″ x 18″ | 6’6″ x 1’6″ |
| 1981 x 533 | 78″ x 21″ | 6’6″ x 1’9″ |
| 1981 x 610 | 78″ x 24″ | 6’6″ x 2’0″ |
| 1981 x 686 | 78″ x 27″ | 6’6″ x 2’3″ |
| 1981 x 762 | 78″ x 30″ | 6’6″ x 2’6″ |
| 1981 x 838 | 78″ x 33″ | 6’6″ x 2’9″ |
| 2040 x 826 | 80¼” x 32½” | 6’8¼” x 2’8½” |
| 2040 x 926 | 80¼” x 36⁷⁄₁₆” | 6’8¼” x 3’0⁷⁄₁₆” |
✅ Tip: Always double-check your existing door frame measurements before placing an order. If you’re unsure, our team at DoorsDelivered.com can help you measure up.
How to Choose the Right Internal Door Sizes
1. Measure Your Door Opening Carefully
Use a tape measure to check the height, width, and thickness of your existing door or frame. Measure in three places (top, middle, bottom for width; left, middle, right for height) and use the smallest measurement.
2. Account for Door Clearance
Make sure there’s enough space between the door and the floor (especially over carpets or tiles), and between the door edge and the frame. This prevents rubbing and allows smooth opening and closing.
3. Think About Accessibility
If you have wheelchair users or mobility aids in the household, opt for wider door openings—typically 838 mm (33″) or more—for better access and ease of use.
4. Match Door Size with Room Proportions
A small door in a large room—or vice versa—can look awkward. Choose door sizes that maintain balance with ceiling height and wall space to keep things looking polished.
5. Check Building Regulations
For renovations and new builds, make sure you comply with any building regulations regarding minimum door width for accessibility and fire safety.
Need Help Measuring or Choosing?
Check out our Internal Door Measuring Guide for step-by-step advice. Or speak with our experts for personalised help—our team is always happy to advise on door size, fitting, and style.
Why Shop Internal Doors with DoorsDelivered.com?
✔️ Wide range of standard and bespoke internal door sizes
✔️ Competitive prices with fast delivery across the UK
✔️ Stylish designs to suit every interior
✔️ Expert customer support to guide your choice
Final Thoughts
Selecting the right internal door size is more than a practical decision—it’s a design choice that enhances your entire home. By understanding standard UK door sizes and carefully measuring your openings, you can ensure a seamless fit and a beautiful finish.
Whether you’re replacing a single door or fitting out an entire home, DoorsDelivered.com has everything you need. Browse our full internal door collection or contact us for expert help today.