Home › Compare › 98” vs 100”

98” vs 100” TV

How the 98-inch and 100-inch sizes really compare — dimensions, ideal seating distance and how much extra screen you actually get.

98” 100”
98”
85.4×48” · sit 9.8–13.1 ft
vs
100”
87.2×49” · sit 10–13.3 ft
Advertisement

Side-by-side specs

Diagonal98” vs 100” (+2”)
Screen width (16:9)85.4” vs 87.2”
Screen height (16:9)48” vs 49”
Relative picture area100” is ~4% bigger (1.04×)
Immersive distance (THX 40°)9.8 ft vs 10 ft
Relaxed distance (SMPTE 30°)13.1 ft vs 13.3 ft
Rule of thumb: screen area — not the diagonal number — is what your eyes notice. Jumping from 98” to 100” adds about 4% 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

Some links are affiliate links: if you buy through them we may earn a small commission at no extra cost to you. Product choice is yours.

📐 Viewing Distance Calculator

Enter a TV size to get the ideal distance, or a distance to get the ideal size. Works for 4K, 1080p and 8K.

Frequently asked questions

Is a 100 inch TV much bigger than a 98 inch?

Yes. Diagonally it's 2” larger, but because screen area grows with the square of the diagonal, the 100” picture is about 4% bigger (1.04× the area) than the 98”. Side by side the difference is very noticeable.

How much farther should I sit from a 100 inch than a 98 inch TV?

For the same immersive THX view, plan about 9.8 ft for the 98” and 10 ft for the 100” — roughly 0.2 ft more.

Should I buy the 98 or the 100 inch TV?

If your seat is around 13.1–9.8 ft away, the 98” is comfortable; from 13.3 ft or more, step up to the 100”. When in doubt and the budget allows, most people prefer the larger screen — very few wish they'd bought smaller.

Will a 100 inch TV fit where a 98 inch was?

The 100” picture is about 87.2” wide vs 85.4” for the 98” — roughly 1.8” 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.