what size tv should i buy

The best TV size depends primarily on your viewing distance and the size of your room. A common starting point is to choose a size that provides an immersive experience without overwhelming your space.

Use Viewing Distance as a Guide. Measure the distance from your couch to the TV. Many experts suggest dividing this distance (in inches) by 1.2 for 4K TVs to find a recommended screen size, though other formulas exist based on desired field of view.
Consider Room Size and Usage. A 55-inch TV is often considered a versatile starting point for many living rooms, while 65-inch models have become a popular standard for larger spaces. Smaller rooms may be better suited for 32- to 43-inch sets.
Resolution Impacts Viewing Distance. 4K resolution allows you to sit closer to the screen than older HD sets without seeing individual pixels. If you plan to watch 4K content, you can comfortably choose a larger screen size for the same viewing distance.
Check Physical Constraints and Quality. Ensure you have enough physical wall space and that your furniture can accommodate the TV's stand. Larger, cheaper TVs may also reveal performance issues like poor processing or color accuracy, so balance size with quality.