Trying to decide between a 55-inch and a 58-inch TV? You're not alone — it's one of the most common TV size dilemmas. The difference looks small on paper, but a 58" TV has 11% more screen area than a 55".

Above you'll find an interactive size calculator, real dimensions, viewing distance recommendations, and the most common mistakes people make when choosing between these two sizes.

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55 inch vs 58 inch TV size comparison

How TV Sizes Are Measured: TV sizes like "55-inch" or "58-inch" refer to the diagonal of the viewable screen, corner to corner. These measurements exclude the bezel and the stand, so the total physical footprint will be slightly larger.

The Difference: A 58" TV has 11% more screen area than a 55" TV — that's like adding an extra 144 square inches of viewing space!

55" TV

Screen Width: 47.9 inches

Screen Height: 27.0 inches

Screen Area: 1,293 sq inches

Recommended Distance: 7-11 feet

Best For: Medium living rooms, apartments

58" TV

Screen Width: 50.6 inches

Screen Height: 28.4 inches

Screen Area: 1,437 sq inches

Recommended Distance: 7.5-12 feet

Best For: Large living rooms, open floor plans

Read the video transcript
[00:00:00] So, if you're comparing a 55-in TV to a 58 in TV, you want to know if the extra size is worth it. On paper, 3 in doesn't look like much, but let's see what that difference really works out to be. So, here's your 55-in TV, and here's the 58 in TV. Look pretty much the same. When we overlay them, though, you can see the [00:00:20] 58 in TV is about 11% larger total screen area. So, it's not a big jump. And really for most people that doesn't really change your viewing experience. That being said, if both TVs are the same price, makes sense to go with the 58 in TV. It's slightly larger. But the most important thing to keep in mind [00:00:40] here isn't the size, it's the features. Picture quality, local dimming, brightness, all of these things are really important. More important than an 11% increase in screen area. Check out my link for the important features to watch out for at the end of this video and the description below. And one thing you want to check if you [00:01:00] do go with that 58 in TV, look at the dimensions because that 58 in TV, if you're trying to fit it in that really tight space, it might not fit. So, you want to make sure that you really have those exact numbers. If this helped you, subscribe for more simple, nononsense TV buying tips.

Common Mistakes to Avoid

Forgetting about stand width: A 58" TV's feet can span well beyond the screen width. If your stand or furniture is too narrow, the feet will overhang or be unstable. Measure your stand's usable width before buying.

Ignoring the box size for transport: The packaging for a 58" TV is significantly larger than the screen itself and often too large for most vehicles. Measure your vehicle's opening before buying, or arrange for store delivery.

Underestimating viewing distance: Sitting too far away makes even a 58" feel small. A good rule of thumb is roughly 1.5× the diagonal — about 7.5 feet for a 58", 7 feet for a 55".

Not accounting for bezel and stand dimensions: The actual footprint with stand is larger than the screen alone. Measure height, depth, and leave 2–4 inches of ventilation clearance if placing in a cabinet or entertainment center.

Underestimating adaptation to larger screens: Many buyers report that a TV that feels "too big" at first quickly becomes normal, leading to regret for not going bigger. If both sizes fit your space and budget, choose the larger.

55 vs 58 Inch TV: Quick FAQ

How wide is a 58 inch TV?

About 50.6 inches wide (28.4 inches tall) for the viewable screen on a 16:9 TV. Overall width may be slightly more with the bezel.

How wide is a 55 inch TV?

About 47.9 inches wide (27 inches tall) for the viewable screen on a 16:9 TV. Overall width may be slightly more with the bezel.

Is a 58 inch TV too big for my room?

It depends on viewing distance. As a quick guide, ~1.5× the diagonal works well: ~7.5 feet for 58". If you sit much farther, consider going larger; much closer, consider 55".

Will a 58 inch TV fit on my old TV stand?

Check the stand width (feet span). Many 58" models use wide-set feet that need a wider surface than the screen width alone suggests.

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