How to Measure a TV: Avoid This Common Sizing Mistake Everyone Regrets
Let’s face it: A TV can either be the centerpiece of your space or a visual distraction. Whether you’re a cinephile who treasures movie nights or someone who only turns the TV on for special occasions, knowing how to measure a TV properly is a must. Getting the right size TV for your room is about more than just numbers; it’s about balancing aesthetics, comfort, and functionality.
The process of choosing a TV isn’t just about picking the largest one that fits your budget. A television that’s too small will feel underwhelming, while an oversized model can dominate the room in a way that feels intrusive. And when it comes to ensuring optimal viewing distance, ergonomic placement, and compatibility with your furniture, proper measurement is critical.
In this guide, we’ll take you through every step of the process to help you measure a TV and choose the best size for your space. From understanding diagonal dimensions to ensuring proportionality with your media console, we’ll simplify what might seem like a complex task. Ready to make your TV the perfect fit? Let’s dive in!
1. How to Measure a TV: Understanding Diagonal Dimensions

When manufacturers list TV sizes, they’re talking about the diagonal length of the screen, not the width or height. Measuring a TV diagonally means taking a tape measure from one corner of the screen to the opposite corner. It’s important to note that this measurement doesn’t include the frame or bezels.
Steps to Measure:
Begin at the top-left corner of the screen (not the edge of the bezel).
Stretch your tape measure to the bottom-right corner.
Record the measurement in inches — this is the advertised screen size.
Why It Matters:
Diagonal measurement is key for comparing TV sizes across brands and models. However, remember that a 55-inch TV from one brand may appear physically larger or smaller than another, depending on the bezel size and stand design.
2. How to Measure a TV: Width and Height Considerations

While diagonal measurement is standard, the width and height are just as crucial for ensuring a proper fit in your space.
Steps to Measure Width and Height:
Width: Measure straight across the screen from one side to the other.
Height: Measure from the bottom edge to the top edge of the screen.
Don’t forget to include the frame and bezel when accounting for total size!
Why It Matters:
Knowing the width and height helps ensure your TV fits into your designated area, such as a built-in niche or media console. Be sure to leave some breathing room around the TV for ventilation and ease of access.
3. How to Measure a TV: Finding the Optimal Viewing Distance

Viewing distance is essential for comfort and visual clarity. Sitting too close can strain your eyes, while sitting too far can make it hard to enjoy the details.
Formula for Viewing Distance:
Multiply the diagonal screen size by 1.5 to 2.5 to find the recommended range. For instance, a 60-inch TV should be placed 7.5 to 12.5 feet away from your seating area.
Additional Tips:
For 4K TVs, you can sit closer without losing picture quality, as they have a higher pixel density.
Consider the height of the TV as well — the center of the screen should be at or slightly below eye level when seated.
4. How to Measure a TV: Matching the Media Console

Your media console plays a crucial role in anchoring the TV visually. A TV that’s too large for the console can look top-heavy, while a console that’s too wide can dwarf the screen.
Proportional Guidelines:
Aim for a console that is at least 10-15% wider than your TV.
For a 65-inch TV (57 inches wide), choose a console that’s around 65-75 inches wide.
Testing Fit:
Use painter’s tape to outline both the TV and the media console on your wall or floor. This gives you a clear sense of scale and proportion before committing to a purchase.
5. How to Measure a TV: Accounting for Wall Mounting

If you’re mounting your TV, accurate measurements ensure proper placement and a clean installation.
Steps for Wall Mounting:
Measure the TV’s height and mark the center on your wall.
Determine the height of the mount, keeping the center of the screen at eye level when seated.
Leave space for cables and any necessary clearance from nearby furniture.
Pro Tip:
Use a level to ensure your mount is straight and check the TV’s weight compatibility with the mount.
FAQ: How to Measure a TV
Q: Do TV sizes include the bezel?A: No, the advertised screen size only refers to the visible screen area. Be sure to measure the bezel if total dimensions are important for your setup.
Q: What’s the best size TV for a small room?A: For smaller spaces, stick to TVs under 50 inches diagonally and ensure they’re paired with proportional furniture.
Q: Can I measure a mounted TV?A: Yes! Use the same diagonal measurement method and take care to include the frame when assessing total size.
Your Next Step
Ready to find the perfect TV for your space? At BY Design and Viz, we specialize in creating beautiful, functional interiors tailored to your needs. From finding the right-sized TV to designing an entire media room, our team is here to help.