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65-inch vs 77-inch TV: how much screen can your wall take?

By TechCompare · Updated · How we check

TV screen dimensions

Spec65-inch TV77-inch TV
Width56.7 in (143.9 cm)67.1 in (170.5 cm)
Height31.9 in (80.9 cm)37.8 in (95.9 cm)

Approximate 16:9 screen dimensions. The TV's frame and stand add to its overall size, so check the manufacturer's measurements before buying.

Pick the 77-inch only if the wall takes 170.5 cm (67.1 inches)67.1 inches (170.5 cm) across and you can sit at least 3.2 m (10.4 ft)10.4 ft (3.2 m) back.

Compare the screen sizes to scale

65-inch TV: 143.9 cm (56.7 in)56.7 in (143.9 cm) × 80.9 cm (31.9 in)31.9 in (80.9 cm) · 11647 cm² (1805 in²)1805 in² (11647 cm²)
77-inch TV: 170.5 cm (67.1 in)67.1 in (170.5 cm) × 95.9 cm (37.8 in)37.8 in (95.9 cm) · 16345 cm² (2533 in²)2533 in² (16345 cm²)
Width difference: 26.6 cm (10.5 in)10.5 in (26.6 cm) (18.5%) · Height difference: 14.9 cm (5.9 in)5.9 in (14.9 cm) (18.5%) · Area ratio: 1.40×
Both panels share a corner and are drawn at the same scale, so the extra width and height of the larger screen are true to size. Open these two in the full Screen Size Comparison ›

See both sizes from your couch

Both TVs at 2.7 m (9 ft)9 ft (2.7 m)

65-inch TV: 29.4° FOV (Standard viewing)
77-inch TV: 34.5° FOV (Standard viewing)
Shared seating distance: 274 cm (9.0 ft)9.0 ft (274 cm) · FOV gap: 5.1°
9.0 ft
Top-down view. Both TVs sit at the same wall, with your couch at one shared spot. The wider cone is how much more peripheral vision the bigger panel fills.
This exact 65 vs 77-inch matchup at 274 cm (9.0 ft), pre-loaded. Change the size, move the couch, or check the THX/SMPTE sweet spots.
Edit in the full tool

The 77-inch TV needs 67.1 inches (170.5 cm) of clear wall, against 56.7 inches (143.9 cm) for the 65-inch.

The 65-inch and 77-inch are 30.5 cm (12 in)12 in (30.5 cm) apart on the diagonal. LG sells OLED TVs in both sizes, so the decision comes down to size and wall space. The 77-inch adds 40 percent more screen area, and that's a lot of wall to fill. Measure first.

Try this comparison with our tools

Seating math for a 65-inch TV
Seat distances and field of view for a 65-inch panel.
Size details for a 77-inch TV
Width, height and area for a 77-inch 16:9 panel.
Pixel density for a 77-inch 4K TV
PPI and Retina distance for a 4K panel at this size.
Open the viewing distance calculator
Plug in your seat and check the view angle.
Option A
65-inch TV
Wins 4 of 11 compared specs
Option B
77-inch TV
Wins 7 of 11 compared specs

Side-by-side specs

Spec65-inch TV77-inch TV
Size
Diagonal
65 inches (165 cm)
77 inches (196 cm) (better on this spec)
Screen width (16:9)
143.9 cm (56.7 inches)56.7 inches (143.9 cm)
170.5 cm (67.1 inches)67.1 inches (170.5 cm) (better on this spec)
Screen height (16:9)
80.9 cm (31.9 inches)31.9 inches (80.9 cm)
95.9 cm (37.8 inches)37.8 inches (95.9 cm) (better on this spec)
Screen area
~1805 in² (11,647 cm²)
~2533 in² (16,345 cm²) (better on this spec)
Area increase vs A
Baseline
+40% (better on this spec)
Viewing distance
FOV at 9 ft (2.7 m)The angle of view the screen fills, in degrees. Wider angles feel more immersive.
29.4°
34.5° (better on this spec)
Distance for 30° (SMPTE)The seat where the screen fills 30 degrees, a common rule of thumb for a relaxed view.
2.7 m (8.8 ft)8.8 ft (2.7 m) (better on this spec)
3.2 m (10.4 ft)10.4 ft (3.2 m)
Distance for 40° (THX)The closer seat where the screen fills 40 degrees, the usual cinema-style target.
2.0 m (6.5 ft)6.5 ft (2.0 m) (better on this spec)
2.3 m (7.7 ft)7.7 ft (2.3 m)
Picture
4K pixel densityPixels per inch. A higher number looks sharper up close.
68 PPI (better on this spec)
57 PPI
Fit
Standard living room
Yes (better on this spec)
Only with a wide wall
Dedicated movie room
Good
Better (better on this spec)

How they differ

The 65-inch 16:9 panel is 143.9 cm (56.7 inches)56.7 inches (143.9 cm) wide and 80.9 cm (31.9 inches)31.9 inches (80.9 cm) tall. The 77-inch is 170.5 cm (67.1 inches)67.1 inches (170.5 cm) wide and 95.9 cm (37.8 inches)37.8 inches (95.9 cm) tall, which is 26.6 cm (10.5 in)10.5 in (26.6 cm) wider than the 65. At 2.7 m (9 ft)9 ft (2.7 m) from the couch, the 65-inch fills 29 degrees of view and the 77-inch fills 35. At that couch the 77-inch is closer than its 30-degree seat of 3.2 m (10.4 ft)10.4 ft (3.2 m), so it fills more than the common guideline. The 65-inch's 30-degree seat is 2.7 m (8.8 ft)8.8 ft (2.7 m) back. For a 40-degree THX seat, the distances are 2.0 m (6.5 ft)6.5 ft (2.0 m) and 2.3 m (7.7 ft)7.7 ft (2.3 m). Matching the 77-inch's view from a 65-inch would need a seat of 2.3 m (7.6 ft)7.6 ft (2.3 m). Pixel density falls from 68 PPI to 57 PPI, but at 2.7 m (9 ft)9 ft (2.7 m) both are past their Retina distances, so the drop won't show.

Verdict

The real test is wall space. At 2.7 m (9 ft)9 ft (2.7 m), the 77-inch fills more than the 30-degree guideline. A 77-inch is 170.5 cm (67.1 inches)67.1 inches (170.5 cm) across, and if your wall can't take that cleanly, the 65 is already the answer.

Seating math for a 65-inch TV

Which should you pick?

Choose 65-inch TV

Pick the 65-inch if your wall can't take 170.5 cm (67.1 inches)67.1 inches (170.5 cm) across cleanly. It's also the better pick for a seat closer to the screen than the 77-inch's 30-degree distance, since the bigger panel would fill more of the view there. At 2.7 m (9 ft)9 ft (2.7 m), the 65-inch fills 29 degrees of view.

See 65-inch seating math

Choose 77-inch TV

Go with the 77-inch if the room is large, the wall is clear, and you want the picture to fill more of your view for movies and sports. It adds 26.6 cm (10.5 in)10.5 in (26.6 cm) of width over the 65-inch, which takes up real wall.

See 77-inch size details

Related comparisons

55-inch TV vs 65-inch TV
The 40 degree seat is 5.5 ft (1.7 m) away for the 55-inch TV and 6.5 ft (2.0 m) for the 65-inch.
Read comparison
65-inch TV vs 75-inch TV
From 9 ft (2.7 m) away, the 65-inch TV fills 29 degrees of your view and the 75-inch fills 34.
Read comparison
75-inch TV vs 85-inch TV
The 75-inch TV is 5.4 ft (1.7 m) wide and the 85-inch TV is 6.2 ft (1.9 m) wide.
Read comparison
43-inch TV vs 50-inch TV
The 50-inch TV adds 35 percent more screen area, and wall width decides whether it fits.
Read comparison
50-inch TV vs 55-inch TV
The 55-inch TV is 4.4 in (11.1 cm) wider than the 50-inch, which matters on a narrow wall.
Read comparison
85-inch TV vs 98-inch TV
The 98-inch TV needs 85.4 inches (217.0 cm) of wall, and at 11 ft (3.4 m) it fills 36 degrees of view.
Read comparison

Frequently asked questions

How much more screen area does a 77-inch add over a 65-inch?
About 40 percent. A 65-inch 16:9 panel covers about 11,647 cm² (1805 in²)1805 in² (11,647 cm²), and a 77-inch covers about 16,345 cm² (2533 in²)2533 in² (16,345 cm²). The 77-inch is 170.5 cm (67.1 inches)67.1 inches (170.5 cm) wide, against 143.9 cm (56.7 inches)56.7 inches (143.9 cm) for the 65-inch.
Is a 77-inch OLED TV available?
Yes. LG sells 77-inch OLED TVs, and other brands do too. Model names and sizes change each year, so check current listings before you plan a wall.
Is 4K still sharp from a couch this far back?
Yes. The 65-inch is 68 PPI in 4K and the 77-inch is 57 PPI. At 2.7 m (9 ft)9 ft (2.7 m), both are past their Retina distances of 1.3 m (4.2 ft)4.2 ft (1.3 m) and 1.5 m (5.0 ft)5.0 ft (1.5 m), so single pixels don't show for normal eyesight.

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