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How big is a 77-inch TV? Dimensions for the 77-inch OLED size

By TechCompare · Updated · How we check

A 77-inch (195.6 cm) 16:9 TV screen is about 170.5 cm (67.11 inches)67.11 inches (170.5 cm) wide and 95.9 cm (37.75 inches)37.75 inches (95.9 cm) tall. The TV's full width runs a little past that, so plan around the set, not the picture alone.

The 77" 16:9 TV panel next to a 65" 16:9 reference

Drawn to scale so you can see the size difference at a glance

77" 16:9 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)
65" 16:9: 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)
Width difference: 26.6 cm (10.5 in)10.5 in (26.6 cm) (15.6%) · Height difference: 14.9 cm (5.9 in)5.9 in (14.9 cm) (15.6%) · Area ratio: 0.71×
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 ›
This exact 77″ vs 65″ overlay, pre-loaded. Swap the reference, change either panel, or flip units.
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A 77-inch 16:9 TV measures 170.5 cm (67.11 inches)67.11 inches (170.5 cm) wide by 95.9 cm (37.75 inches)37.75 inches (95.9 cm) tall, with about 16,345 cm² (2533 square inches)2533 square inches (16,345 cm²) of screen. OLED sets usually come in this size. It's a small step past the 75-inch set, with 5% more area.

Dimensions
170.5 cm × 95.9 cm67.1" × 37.8"
67.1" × 37.8"170.5 cm × 95.9 cm
Screen area
2533 sq in
16345 cm²
Aspect ratio
16:9
195.6 cm (77") diagonal77" (195.6 cm) diagonal

How this is calculated

LG lists its G6 77-inch class OLED with a 76.7-inch diagonal on its US spec page, so the class name is a rounded number. Measure the screen you plan to buy, not the name on the box. The 16:9 shape gives this size a width of 170.5 cm and a height of 95.9 cm.

At 4K the panel gives 57 PPI, and single pixels blend together from 1.5 m (5.0 ft)5.0 ft (1.5 m) away.

Verdict

Choose 77 inches when you want an OLED picture and the room can take the width. The panel measures 170.5 cm (67.11 in)67.11 in (170.5 cm) by 95.9 cm (37.75 in)37.75 in (95.9 cm), or about 16,345 cm² (2533 in²)2533 in² (16,345 cm²) of picture.

That's 5% more picture than a 75-inch. If you'd rather have an LCD set, the 75-inch is the close alternative. It also needs 1.7 inches more width than a 75-inch.

More Screen Size scenarios

24" 16:9 monitor
The classic desktop size: big enough for a browser plus sidebar, and it fits on any desk.
View details
27" 16:9 monitor
A 27-inch 16:9 monitor measures 23.53 inches (59.8 cm) wide by 13.24 inches (33.6 cm) tall, giving you about 312 square inches (2010 cm²) of screen area, excluding the bezel.
View details
32" 16:9 monitor
A 32-inch 16:9 monitor measures 27.89 inches (70.8 cm) wide by 15.69 inches (39.8 cm) tall, giving you about 438 square inches (2823 cm²) of screen area.
View details

Related guides

77-inch 4K TV PPI
Pixel density of a 77-inch 4K panel.
View guide
75-inch TV size
The QLED size one step down.
View guide
85-inch TV size
The next size up, for a wider wall.
View guide
Screen size chart
Width, height and area of common screen sizes, in inches and cm.
View guide

Frequently asked questions

What is the exact size of a 77-inch TV?
A 77-inch 16:9 screen is 170.5 cm (67.11 inches)67.11 inches (170.5 cm) wide and 95.9 cm (37.75 inches)37.75 inches (95.9 cm) tall, about 16,345 cm² (2533 square inches)2533 square inches (16,345 cm²) of picture. LG's 77-inch class OLED sets list a 76.7-inch diagonal on its spec pages, so the real screen can measure a little under the name on the box.
What's the difference between OLED and QLED at this size?
OLED turns off each pixel on its own, so black areas look deep in a dim room. QLED is an LCD with a quantum-dot layer and a backlight, so its blacks depend on how that backlight is controlled. The panel type will shape the picture more than a few inches of size will.
What TV stand or console width suits a 77-inch TV?
A stand has to cover the full set, so measure the TV rather than the screen. Size the stand to the full TV, not just the screen's 67.1 inches, since the frame adds to it. Check the spec sheet for that number.
How far should I sit from a 77-inch TV?
The seat for a 40 degree view is 2.3 m (7.7 ft)7.7 ft (2.3 m), and a 30 degree view is 3.2 m (10.4 ft)10.4 ft (3.2 m). At the 40 degree seat, single 4K pixels are already too small to pick out.

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