4K and 8K refer to an ultra-high definition (Ultra HD) image with a horizontal resolution of about 4,000 and 8,000 pixels respectively. Pixels are the dots that make up a TV image. K means about 1,000. The more pixels, the sharper the image.
Note: You may also see the TV resolution expressed as 4K2K which refers to the horizontal (about 4K) and vertical (about 2K) pixel resolution.
- 2K or 2K1K: 1,920 Horizontal x 1,080 Vertical = 2,073,600 pixels
- 4K or 4K2K: 3,840 Horizontal x 2,160 Vertical = 8,294,400 pixels
- 8K or 8K4K: 7,680 Horizontal x 4,320 Vertical = 33,177,600 pixels
To see if your TV is compatible with 4K or 8K, refer to its specifications.