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77” vs 85” TV

How the 77-inch and 85-inch sizes really compare — dimensions, ideal seating distance and how much extra screen you actually get.

77” 85”
77”
67.1×37.8” · sit 7.7–10.3 ft
vs
85”
74.1×41.7” · sit 8.5–11.3 ft
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Side-by-side specs

Diagonal77” vs 85” (+8”)
Screen width (16:9)67.1” vs 74.1”
Screen height (16:9)37.8” vs 41.7”
Relative picture area85” is ~22% bigger (1.22×)
Immersive distance (THX 40°)7.7 ft vs 8.5 ft
Relaxed distance (SMPTE 30°)10.3 ft vs 11.3 ft
Rule of thumb: screen area — not the diagonal number — is what your eyes notice. Jumping from 77” to 85” adds about 22% more picture.

TV wall mounts

A good mount puts the screen at the right height and lets you angle it away from glare. Match the mount's VESA pattern and weight rating to your TV, and use full-motion arms for wide or off-center rooms.

Full-motion (articulating) mountSwivel & tilt — best for corner or wide seatingLink coming soon
Tilting low-profile mountSits flush — ideal for above-eye-level placementLink coming soon
Fixed ultra-slim mountCheapest, thinnest — for perfectly-placed screensLink coming soon

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📐 Viewing Distance Calculator

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Frequently asked questions

Is a 85 inch TV much bigger than a 77 inch?

Yes. Diagonally it's 8” larger, but because screen area grows with the square of the diagonal, the 85” picture is about 22% bigger (1.22× the area) than the 77”. Side by side the difference is very noticeable.

How much farther should I sit from a 85 inch than a 77 inch TV?

For the same immersive THX view, plan about 7.7 ft for the 77” and 8.5 ft for the 85” — roughly 0.8 ft more.

Should I buy the 77 or the 85 inch TV?

If your seat is around 10.3–7.7 ft away, the 77” is comfortable; from 11.3 ft or more, step up to the 85”. When in doubt and the budget allows, most people prefer the larger screen — very few wish they'd bought smaller.

Will a 85 inch TV fit where a 77 inch was?

The 85” picture is about 74.1” wide vs 67.1” for the 77” — roughly 7” wider. Check your stand width and any recess before upgrading.

Compare other sizes

43” vs 50”43” vs 55”48” vs 55”50” vs 55”50” vs 60”55” vs 60”55” vs 65”55” vs 75”58” vs 65”60” vs 65”60” vs 70”65” vs 70”65” vs 75”65” vs 77”

Dimensions assume a 16:9 picture area. Distances use the THX (40°) and SMPTE (30°) standards. Last reviewed 2026-08-12.