From corner to corner – you need to know how to measure a TV screen this way to get the right size. It’s the only method that gives you the real screen size you see in stores.
I’ve helped many friends pick the right TV. They often guess wrong and get a screen that’s too big or too small for their wall. The right way to measure is simple once you know the steps.
I’ll show you the easy way to do it. You just need a tape measure and a few minutes of your time. Let’s get your new TV to fit perfectly in your space.
Why You Need to Measure Your TV Correctly
Getting the size wrong is a common mistake. You might think a 55-inch TV will fit, but then it hangs over your stand. Knowing how to measure a TV prevents this headache.
TV sizes in stores talk about the screen only. They don’t include the plastic frame around it. The full box size is always bigger than the screen number.
You need the real measurements for your furniture. Your TV stand or wall mount has limits. A TV that’s too wide won’t sit safely on your stand.
Room size matters too. A huge TV in a small room feels overwhelming. A small TV in a big room gets lost on the wall.
Proper viewing distance depends on screen size. The RTINGS.com guide explains this well. You want to sit at the right spot for the best picture.
So learning how to measure a TV is your first step. It saves you time and money. You won’t have to return a TV that doesn’t fit your space.
The Right Tools for Measuring a TV Screen
You don’t need fancy gear. A simple tape measure works best. Make sure it’s long enough for big screens.
Use a soft tape measure if you have one. It’s easier to hold against the curved screen. A metal one can scratch the surface if you’re not careful.
Have a notepad and pen ready. Write down the numbers as you go. It’s easy to forget them between measurements.
You might want a helper for big TVs. Holding the tape and reading it alone is tricky. A friend makes the job faster and more accurate.
Clear the area around your TV first. Move any decorations or cables out of the way. You need a clean path to get to the corners.
Good light helps you see the tape marks. Turn on a lamp if your room is dim. You want to read the numbers clearly on your first try.
Step-by-Step: How to Measure a TV Screen Diagonally
This is the standard way stores list TV sizes. Place your tape at the bottom left corner of the screen. Stretch it to the top right corner.
Measure only the glowing picture area. Don’t include the black or colored frame around it. That plastic part is the bezel, not the screen.
Keep the tape flat against the screen. Don’t let it sag in the middle. A straight line gives you the true diagonal length.
Read the number where the tape meets the far corner. Write it down in inches. Most TVs use inches for their size name.
Check your measurement twice. Do it from opposite corners too. The numbers should match if you measured correctly.
Now you know how to measure a TV the right way. This number should match what the maker says. A “65-inch TV” should measure close to 65 inches on the diagonal.
How to Measure a TV for Width and Height
Diagonal size tells you screen area. Width and height tell you if it fits your space. You need both sets of numbers for the full picture.
Place your tape at the left side of the screen. Measure straight across to the right side. This gives you the screen width.
For height, measure from the top to the bottom. Again, measure only the glowing picture area. Don’t include the bezel in this number yet.
Now measure the full TV unit width. Include the plastic frame on both sides. This is the total space the TV will take up.
Do the same for the full height. Include any stand or base if it’s attached. Some stands add several inches to the total height.
These are the critical numbers for your furniture. Your TV stand needs to be wider than the full unit width. Your wall space needs to fit the full height with the stand.
Measuring for a TV Stand or Cabinet
Your stand must be wider than the TV. Measure your stand’s top surface first. Note the width and depth available.
The TV should not hang over the edges. An overhang looks bad and can be unsafe. The whole TV base needs to sit on the stand.
Check the weight limit of your furniture. Big TVs are heavy. The Consumer Reports safety guide says to check this.
Measure the distance between the stand’s legs. Some TVs have wide-set feet. They need to fit between any cabinet supports.
Think about cable access at the back. Leave space for cords to connect. You don’t want to push the TV flush against the wall.
Now you know how to measure a TV for your stand. Compare your TV’s full width to your stand’s width. The stand should be at least a few inches wider on each side.
How to Measure a TV for Wall Mounting
Wall mounting needs more planning. You must find the studs in your wall first. These wooden beams hold the weight safely.
Measure the VESA pattern on the TV back. This is the square or rectangle of screw holes. Your mount must match this pattern.
Decide how high to place the TV. Eye level when seated is best. The Harvard Health blog says this reduces neck strain.
Measure from the floor to your eye level. Then subtract half the TV height. This tells you where the TV center should go.
Check for outlets and cables behind the wall. You need power and input access. Don’t mount the TV over an outlet you need to use.
Learning how to measure a TV for the wall takes care. But it gives you a clean look. Your room feels more open without a big stand.
Common Mistakes When Measuring TVs
People often measure the wrong part. They include the bezel in the diagonal screen size. This makes them think they have a bigger TV than they do.
Another error is measuring the box. The box size is larger for shipping protection. Always measure the actual TV screen itself.
Forgetting to measure depth is common. Some new TVs are very thin. But older models or certain types stick out more from the wall.
Not checking the room’s viewing distance hurts too. You might buy a TV that’s too big for how close you sit. This makes the picture look grainy.
Ignoring the weight can damage your furniture. A heavy TV on a weak stand is risky. It could tip over or break the stand.
These mistakes are easy to avoid. Take your time and measure twice. Knowing how to measure a TV correctly saves you from these problems.
TV Size to Room Size Guide
Your room size guides your TV size choice. A good rule is the distance from your seat to the screen. It should be about 1.5 to 2.5 times the TV’s diagonal size.
For a 55-inch TV, sit 7 to 12 feet away. This gives you the best picture quality. You see all the detail without seeing individual pixels.
Small rooms need smaller TVs. A 40-inch TV might be perfect for a bedroom. A 75-inch TV would feel like a movie theater in that space.
Big open living rooms can handle large screens. An 85-inch TV works in a great room. You need the screen size to match the space scale.
Consider all seating positions. People on the sides should still see the screen well. A very wide TV helps with this in wide rooms.
The SMPTE has viewing angle standards for professionals. But for home use, just make sure everyone has a decent view. That’s what matters most.
Measuring Different TV Types
OLED TVs often have very thin bezels. The screen size is almost the same as the total width. This makes them easier to fit in tight spaces.
Some gaming TVs have thick bottoms for speakers. The height measurement might surprise you. Always check the full unit dimensions.
Curved screens need special care. Measure along the curve for the true diagonal. A straight tape won’t follow the screen curve correctly.
TVs with stands attached add height. The stand might be part of the unit. You can’t remove it for a cleaner look.
Soundbar integration changes measurements too. Some TVs have built-in soundbar bases. These make the TV taller than basic models.
No matter the type, the method stays the same. You need to know how to measure a TV from corner to corner. Then get the width and height for your space.
Tips for Buying the Right Size TV
Take your room measurements to the store. Better yet, make a paper template of the TV size. Tape it on your wall to see how it looks.
Remember that bigger isn’t always better. A too-big TV can make you dizzy. You have to move your head to see the whole screen.
Check return policies before you buy. Some stores charge restocking fees for big TVs. Make sure your measurements are right first.
Consider future furniture changes. You might get a new stand next year. Buy a TV that fits your space now and with possible changes.
Think about delivery access. Measure your doorways and hallways. The TV box needs to fit through these spaces to get into your room.
The Federal Trade Commission has tips for electronics buying. Their advice helps you shop smart. Knowing how to measure a TV is part of being a smart shopper.
Frequently Asked Questions
How do I measure a TV screen size?
Measure from one corner of the screen to the opposite corner. Use a tape measure and go diagonally across the glowing area only.
Do I include the bezel when measuring a TV?
For screen size, no. For fitting on a stand, yes. You need both measurements to know if the TV fits your space.
How to measure a TV for a wall mount?
Find the VESA pattern on the back first. Then measure the full width and height of the TV unit. Make sure your wall has space for it.
What’s the difference between screen size and TV size?
Screen size is just the picture area. TV size includes the bezel around it. The TV is always bigger than the screen number says.
How to measure a TV that’s already on the wall?
Measure from the bottom left corner to the top right corner of the screen. Use a ladder if you need to reach the top corner safely.
Can I measure a TV with a ruler?
Only for very small screens. For most TVs, you need a tape measure. A ruler isn’t long enough for big screens over 40 inches.
Conclusion
So now you know how to measure a TV the right way. It’s a simple process that takes just a few minutes. But it makes a huge difference in your buying decision.
Start with the diagonal screen measurement. Then get the full width and height with the bezel. Check these against your furniture and room size.
Take your time and measure twice. Your perfect TV is out there waiting. You just need to find the right size for your space and viewing habits.