Buying a new TV is one of the best things you can do to improve your at-home entertainment experience. Whether you’re streaming “Wednesday” on Netflix (NFLX) or playing “Call of Duty,” a brand-new big screen is always a welcome addition to any living room.

But TV manufacturers don’t exactly make buying one easy. From confusing marketing lingo, to unnecessary features (I’m looking at you 8K resolution) picking up a set can be an overwhelming endeavor.

Luckily, for you, I’m here to help you figure out what to look for in your next television to ensure you get the best setup for your home.

Sizing up your TV

If you’re anything like me, you want a TV so large it could blot out the Sun. But a TV that big probably won’t fit in my Queens apartment. My point is while you might want a giant TV, you need to make sure it’s the right size for your space.

If you get a set that’s too large, you’ll have a hard time seeing the entire picture. Get one that’s too small, though, and the image will be difficult to make out. There are a slew of math formulas you can use to help you figure out the right size set for your room.

Sony (SONY), for example, says a 4K panel’s size should measure two-thirds the distance between where you’ll be seated and where you’ll set up your TV. So if you’re sitting 5 feet, or 60 inches, from your TV, you should get a 40-inch TV.

Samsung, meanwhile, recommends you get a 4K TV that’s roughly half the size of the distance from your couch to your TV in inches. So if you’re going to be sitting 10 feet from your TV, or 120 inches, you’ll want to get a 60-inch TV.

If you’re opting for a 1080p TV rather than a 4K model, you might want to sit a bit further away from your set. That’s because 4K TVs have more pixels (the tiny dots that make up the picture), which allows you to sit closer to your TV without losing detail.

If all of that sounds a little much, you can opt for a decidedly more physical approach and simply cut out a large piece of cardboard the size of the TV you want and place it in your room to see if it’s a good size for your space.