Your room
Sit where you watch and measure floor to eyes. Most couches land at 40–44″; bar seating runs ~48″.
Everyday mix picks the comfortable middle. Movies first pushes to the THX immersion maximum.
Used 146 times and counting — real count, bots excluded.
How wide and tall is each TV size?
A TV’s size is the diagonal, so a “65-inch” is about 57″ wide, not 65″. Pick a size for the exact screen width and height, or scan the chart — all 16:9, like every modern TV.
These are the screen dimensions. The whole TV runs roughly ½–1½″ larger all around for the frame — check the model’s spec sheet before you cut an opening or size a niche.
| TV size | Screen width | Screen height | Wall width to allow |
|---|---|---|---|
| 32″ | 27.9″ | 15.7″ | 31″+ |
| 40″ | 34.9″ | 19.6″ | 38″+ |
| 43″ | 37.5″ | 21.1″ | 40″+ |
| 48″ | 41.8″ | 23.5″ | 45″+ |
| 50″ | 43.6″ | 24.5″ | 47″+ |
| 55″ | 47.9″ | 27.0″ | 51″+ |
| 60″ | 52.3″ | 29.4″ | 55″+ |
| 65″ | 56.7″ | 31.9″ | 60″+ |
| 70″ | 61.0″ | 34.3″ | 64″+ |
| 75″ | 65.4″ | 36.8″ | 68″+ |
| 77″ | 67.1″ | 37.8″ | 70″+ |
| 83″ | 72.3″ | 40.7″ | 75″+ |
| 85″ | 74.1″ | 41.7″ | 77″+ |
| 98″ | 85.4″ | 48.0″ | 88″+ |
Screen dimensions for a 16:9 panel. “Wall width to allow” leaves room for the frame and a little breathing space either side.
The math behind the numbers
Size: the THX formula
The immersion maximum is distance in inches × 0.835 — THX’s published formula for a ~40° viewing angle. The “everyday” pick sits near distance ÷ 1.5, between the SMPTE 30° cinema standard and the THX max. Full reasoning in our TV size guide.
Height: eye level, not gallery level
Screen center at seated eye level (~42″ for most couches). The calculator converts your screen size into real 16:9 dimensions and gives the bottom-edge height — the number you actually need on install day. Reasoning in the mounting height guide.
The fireplace check: THX’s 15° rule
Your line of sight should rise no more than 15 degrees to the screen center. Distance buys forgiveness — the calculator does the trigonometry for your exact room and tells you when a tilting or pull-down mount is the honest fix.
Writing about TV sizing? You’re welcome to cite or link this calculator — it lives permanently at kaliebdesigns.com/tv-size-calculator.php.
We’ll mount it exactly there
Screenshot your results and call — a Bakersfield quote takes one phone call, and the height you just calculated is the height you’ll get, checked with you seated before we tighten a single bolt.
Call 661-412-4308 Free quote over the phone Our TV mounting service
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