What Size TV Should I Buy? A Viewing Distance Guide for 2026

It's one of the most common questions when buying a new TV: how big should it be? Too small and you'll squint at the screen from your sofa. Too big and... well, almost nobody complains about their TV being too big. But getting the right size for your room makes a real difference to your daily viewing experience.

This guide gives you a practical, straightforward way to choose the perfect TV size based on your room dimensions, viewing habits, and budget.

The Simple Rule: Viewing Distance ÷ 1.5

The quickest way to find your ideal TV size is this formula: measure the distance from your sofa to the TV position (in inches), then divide by 1.5. The result is your recommended screen size.

For metric measurements (since we're in Ireland), here's the conversion:

1.5 metres → 40""–43"" TV. 2.0 metres → 50""–55"" TV. 2.5 metres → 55""–65"" TV. 3.0 metres → 65""–75"" TV. 3.5 metres+ → 75""–85"" TV.

This formula is based on the viewing angle recommended by the Society of Motion Picture and Television Engineers (SMPTE), which suggests your TV should fill about 30–40 degrees of your field of vision for an immersive but comfortable experience.

Common Irish Living Room Scenarios

Small Living Room or Apartment (1.5–2m viewing distance)

If you're working with a compact space — a city apartment or a cosy living room — a 43"" to 50"" TV is your sweet spot. A 50"" model delivers excellent picture quality without overwhelming a small room. Wall-mounting can save space and allow you to sit slightly closer.

Average Living Room (2–3m viewing distance)

This is the most common setup in Irish homes, and a 55"" TV is the most popular choice for good reason. It's large enough to feel immersive for movies and sport, but not so large that it dominates the room. A 55"" 4K TV at this distance delivers exceptional detail and sharpness.

If your budget allows, stepping up to 65"" at this distance is genuinely worth considering. Many people who make this jump say it was the best upgrade they've ever made.

Large Living Room (3m+ viewing distance)

For spacious living rooms, a 65"" to 75"" TV comes into its own. At 3 metres or more, a 55"" TV can start to feel a little small. A 65"" model fills your field of vision beautifully and makes sport, movies, and gaming genuinely cinematic.

Bedroom TVs

For bedrooms, where you're typically watching from a shorter distance (1.5–2m), a 32"" to 43"" TV works perfectly. Since bedroom viewing is often more casual — catching up on series before sleep, morning news — you don't need the same immersive size as your main living room.

Does Resolution Matter for Size?

Yes, but not as much as it used to. With 4K resolution now standard on all TVs 43"" and above, you can sit closer to larger screens without seeing individual pixels. The rule of thumb used to be to sit further back from bigger screens, but 4K's pixel density means you can comfortably sit at 1.5x the screen diagonal (our formula above) even on a 75"" TV.

This is one of the reasons bigger TVs have become so popular — 4K makes large screens look sharp at normal viewing distances.

Wall-Mounted vs Stand: Does It Affect Size Choice?

Wall-mounting your TV has a few benefits for size selection. It places the screen flat against the wall, which means you can go slightly bigger than you might with a stand. A wall-mounted 65"" TV in an average living room looks proportional and elegant, whereas the same TV on a deep stand might feel like it's crowding the space.

If you're wall-mounting, you can typically go one size up from what the distance formula suggests. Just ensure your wall is suitable for the weight of the TV and you use a properly rated bracket.

Common Mistakes to Avoid

Buying too small ""to be safe"" — This is the most common TV sizing mistake. Almost everyone who buys a 55"" says they wish they'd gone for a 65"". TVs look much smaller on your wall than they do in the shop.

Not measuring first — Always measure your viewing distance and the space where the TV will sit before you shop. Check the width of your TV unit or wall space to ensure the TV fits.

Ignoring the stand width — Some TVs have wide-set legs that need a TV unit wider than the screen itself. Check the stand dimensions if you're not wall-mounting.

Our Recommendation

For the average Irish home, 55"" is the minimum you should consider for a main living room TV in 2026, with 65"" being the upgrade that most people find transformative. Browse the full range of TVs at Euronics.ie to compare sizes, technologies, and prices — and remember, when in doubt, go bigger.

Buying Tips for Irish Shoppers

When shopping for tvs in Ireland, timing your purchase can save you a significant amount of money. The best times to buy are during Black Friday sales in November, January sales after Christmas, and during bank holiday weekends when retailers frequently run promotions. Keep an eye on Euronics.ie for regular deals and seasonal offers.

Before you buy, always compare the total cost of ownership — not just the sticker price. Factor in energy consumption (check the EU energy label), expected lifespan, and any installation costs. A slightly more expensive model with a better energy rating can save you hundreds of euros over its lifetime in electricity costs, which is particularly relevant given Ireland's electricity prices averaging around €0.30 per kWh.

Delivery and installation are also worth considering. Many Irish retailers offer free delivery on large appliances, and some include basic installation. Check whether old appliance removal is included — having your old unit taken away can save you a trip to the recycling centre. Under Irish WEEE regulations, retailers are required to take back your old appliance when delivering a new one of the same type.

What to Consider Before You Buy

Before making your final decision, there are a few practical considerations specific to Irish homes that are worth thinking through. First, measure the space carefully — Irish kitchens and utility rooms can vary significantly in size, particularly in older homes and city apartments. Always leave clearance for ventilation, door opening, and access to connections.

Think about your household's specific needs. A couple in a Dublin apartment has very different requirements to a family of five in a detached house in Cork. Consider how often you'll use the appliance, what capacity you genuinely need, and which features you'll actually use versus those that sound impressive but add cost without real benefit.

Energy efficiency deserves special attention in Ireland. With electricity costs among the highest in Europe, choosing an A-rated or B-rated appliance can result in meaningful savings over time. The EU energy label makes it straightforward to compare — look for the colour-coded scale and annual energy consumption figure in kWh. Even a difference of 50 kWh per year translates to roughly €15 annual savings, which adds up over the 10+ year lifespan of most major appliances.

Finally, consider warranty and after-sales support. Buying from established Irish retailers like Euronics ensures you have local support if anything goes wrong. Some brands offer extended warranties, and it's worth checking whether the retailer offers their own protection plans for added peace of mind.

Frequently Asked Questions

What size TV is best for a 2.5 metre viewing distance?

At 2.5 metres, a 55 inch to 65 inch TV is ideal. A 55 inch is the minimum recommended size, and 65 inch will feel more immersive for movies and sport. With 4K resolution, both sizes look sharp at this distance.

Is a 55 inch TV big enough for a living room?

For most Irish living rooms with viewing distances of 2–2.5 metres, 55 inch is a great all-rounder. However, if your room allows it, 65 inch provides a noticeably more immersive experience. Many buyers who start at 55 inch end up wishing they'd gone bigger.

Can a TV be too big for a room?

Technically yes, but in practice it's rare with modern 4K TVs. The high resolution means you can sit closer without seeing pixels. The only concern is if the TV physically doesn't fit in your space. Measure your wall or TV unit width carefully before buying.

What size TV for a bedroom?

For bedrooms, a 32 inch to 43 inch TV is usually perfect. The shorter viewing distance (typically 1.5–2 metres) means you don't need a large screen, and a smaller TV keeps the room feeling relaxed rather than dominated by a screen.