How to Mount a TV on the Wall Perfectly Level

Mounting a TV level is really two jobs. First you get the wall bracket plumb and level. Only then do you touch the TV, and you check the screen again once it is hanging. The mistake I see most often is people cranking the wall plate tight and never re-checking under the real weight of the set. A big TV is heavy enough to shift a snug bracket by a degree or more the moment it hangs on the hooks.

What you need to wall mount a TV

Gather everything before you start. Miss one item and you are making a second trip to the hardware store with the bracket half up. This list covers mounting into studs or into drywall with toggle bolts, which is most walls in a house.

• TV wall mount bracket. Match the VESA pattern on the back of the TV. That is the four holes in a square, measured in millimetres: 200x200, 400x400, and so on. Fixed, tilt, and full-motion mounts each level a bit differently. More on that below.
• Stud finder. Magnetic or electronic. Most walls have studs 16 inches apart on centre. Older houses sometimes run 24 inches.
• Drill and bits. A 5/16-inch bit for lag bolt pilot holes into studs. A 3/8-inch bit for toggle bolt sleeves in drywall. A Phillips or hex driver bit for the lag bolts.
• Lag bolts. 5/16-inch by 2.5-inch lags for stud mounting. They need to reach at least 1.5 inches into the stud after passing through the bracket and drywall.
• Toggle bolts, if you are mounting between studs. Use proper heavy-duty toggle bolts, not the plastic anchors. Check the load rating on the pack against your TV's weight.
• Pencil and measuring tape. For stud locations, mount height, and hole positions.
• A spirit level. Your phone works well here. Proximity audio frees both hands, which matters a lot with a heavy bracket. More on that in Step 2.
• A helper, or a mounting strap. A big screen is awkward to hang on your own. A strap around the TV holds it steady while you sort out the hooks.

Step 1: find the studs and mark the mount height

Studs matter because drywall on its own cannot hold a TV safely over the years. A 2x4 stud carries a big load, and a 5/16-inch lag bolt driven into 1.5 inches of stud holds plenty for any screen. Find your studs before you pick up the drill.

Finding studs

Run the stud finder across the wall at bracket height, slow, left to right. Mark both edges of each stud, then measure to the centre of each one. Studs in most homes sit 16 inches apart on centre, measured centre to centre. Older houses sometimes run 24 inches.

No stud finder? The knock method still works. Knock along the wall and listen. Over a stud the sound is duller and flatter than the hollow thud over open drywall. Drive a small pilot screw at that spot to confirm. If it bites and gets firm, you found the stud. If it spins in freely, you are in the hollow, so move 3/4 inch across and try again. Fill the test holes later with a dab of spackle.

Marking the right height

You want the centre of the screen at seated eye level. On most sofas that lands around 42 inches from the floor. The easiest way to get it right for your room: measure your sofa's seat height, then add 4 to 5 inches for seated eye level. That number is where the centre of the screen should sit.

To find where the wall plate goes, take half the TV's height off the screen-centre number, then add the distance from the bottom of the TV up to the VESA holes. Your TV's manual lists that gap. Mark that height on the wall at each stud.

Step 2: mark the mounting holes level

This is where most crooked TV mounts start. Marking holes level while you hold a heavy metal bracket against a wall is fiddly. Turn on the audio instead. You listen for the tone and keep both hands on the bracket the whole time, eyes on the wall, not the screen.

Proximity audio for hands-free levelling

Open spiritlevel.pro and tap the sound icon before you pick up the bracket. Set the tolerance to Precision (±0.1°) for a TV. Rest the phone on the top edge of the bracket while you hold the bracket flat against the wall at your height marks. The app beeps faster as you get close, then goes to a steady tone once you hit level. You never have to look at the screen.

This one thing takes the fight out of the marking step. Two people squinting at a phone while one holds the bracket and the other marks is how the bracket gets nudged between "looks level" and "mark it." With audio, nobody is watching a screen, so nobody bumps it.

Hold/Freeze to lock the reading

Once you hear the steady tone, tap the vial on screen to turn on Hold/Freeze. An amber HOLD badge appears and locks the reading. That lets you re-check the angle after marking, or prove to your helper the bracket really was level when you marked it. Tap again to unfreeze for the next step.

Mark through the bracket's holes with your pencil at each stud. Before you set the bracket down, check the marks sit at the same height on both studs.

Step 3: drill pilot holes and attach the wall plate

The right pilot hole keeps the stud from splitting and lets the lag bolt's threads bite. The bit should be a touch smaller than the bolt's shank, not its thread diameter. For a 5/16-inch lag bolt, use a 5/16-inch bit for the drywall layer, then a 3/16-inch bit for the stud itself. Depth matters. Aim for at least 1.5 inches of thread in the stud.

Stud mounting with lag bolts

Drill through the bracket hole and the drywall, then keep going at least 2 inches into the stud. Drive the lag bolts by hand or with a socket wrench, not a drill on full torque. At this stage you want snug, not tight. You still have to level and plumb the plate in Step 4 before you tighten fully.

Drywall mounting with toggle bolts

If the stud spacing does not line up with the bracket holes, use heavy-duty toggle bolts. Drill a 3/8-inch hole at each mark. Feed the toggle through, snap the bar flat against the back of the drywall, pull tension with the plastic carrier, then thread your bolt through the bracket and tighten. Read the load rating on the pack and match it to your screen. Two anchors per bracket side gives you a wide safety margin even on a heavy TV.

Step 4: check the plate is level and plumb before final tightening

Most guides skip this step, and it is the one that matters. A bracket that is snug but not fully tight can still move, and this is your last chance to correct it without pulling the whole plate off. Do two checks: Plumb mode for the vertical arms, then Surface mode for the horizontal bar. A one-degree lean on a 65-inch screen drops one side more than an inch below the other, and you will notice that from the sofa every day.

Check the vertical arms in Plumb mode

Switch to Plumb mode. Hold the phone's edge against one of the bracket's vertical side arms, screen facing you. The bubble tracks left and right. Dead centre means plumb. If the arm leans, back the lag bolts off a little, rotate the plate, and check again. A good bracket on a flat wall needs only a nudge.

Check the horizontal bar in Surface mode

Switch back to Surface mode and rest the phone flat on the bracket's top rail. You want the pitch reading at 0.0°. A small reading means the bracket has a slight twist. Loosen one side's lag bolts a quarter-turn, adjust, then re-tighten and re-check. Tighten in small steps, a quarter-turn per bolt, alternating sides. If you tighten one side all the way first, the plate pulls out of true.

Here is the part people miss. A level bracket can still hang a crooked TV, and the reason is usually not the bracket being off left to right. It is the top rail being twisted a little around its own length. A bubble level sitting on the rail can miss a small twist like that. Your phone reads pitch and roll at the same time, so it catches the twist that the bubble hides.

Step 5: hang the TV and do the final level check

With the wall plate secure, hang the screen. This is where a helper or a mounting strap earns its keep. A big TV is wide and heavy, and lifting it while you line the back hooks up on the plate is a two-person job. On your own, a strap holding the set steady makes it possible.

Hanging the TV

Bolt the mounting arms to the TV's VESA holes first, while the set is still flat on a padded surface or in its box. Lift the TV to the wall and hook the TV-side arms onto the plate. Most brackets click or lock when they seat right. Leave the adjustment screws loose for now.

Final level check with the phone on top of the TV

Once the TV is hanging, rest your phone flat on top of the set and check the pitch reading in Surface mode. The weight of the set often shifts a snug plate half a degree or more, more so on tilt and full-motion arms. That is normal. Most good mounts have small hex-adjustable screws along the wall plate that shift the hanging angle left or right a degree or two without taking the TV down.

Adjust until the phone reads 0.0°. If you want a slight backward tilt for a low sofa, set that as your target angle instead. Then tighten the adjustment screws and any locking bolts. Check level one more time after tightening, since the last turn of the wrench can shift the angle a hair on cheaper mounts.

Mount types and how hard each is to level

Not every mount levels the same way. The type you buy decides how perfect the wall plate has to be before you hang the TV, and how much you can fix afterward. Knowing this up front saves you redoing work.

Fixed mounts are the easiest to level

Fixed mounts hold the TV flat against the wall with no adjustment once it is up. They are the simplest to level because the only thing you control is where the plate sits. Get the plate level before you tighten and the TV is level. You cannot correct anything after, so Step 4 counts double here.

Tilt mounts have to be level because you cannot adjust sideways

Tilt mounts angle the screen down toward a seated viewer, but they do not swivel left or right. So the plate has to be dead level across before the TV goes on. Fix a sideways lean after and you are pulling the TV off and repositioning the bracket. Run Precision tolerance (±0.1°) for these.

Full-motion arms can self-level after installation

Full-motion arms swing the TV out from the wall and rotate it left or right. A little plate lean you can often dial out by twisting the arm once the set is hanging. Even so, start with a level plate. An arm mounted well off level puts uneven load on the pivot joints, and over time they drift and work loose.

Is your wall strong enough? TV weight and anchor ratings

Weight drives the whole fastener choice, and people tend to underestimate how heavy a modern screen is. A 65-inch TV runs somewhere from 55 to 80 lbs without its stand, and an 85-inch set can push toward 130. Whatever you use, it should be rated for several times the TV's weight, because bumps and vibration load a fastener harder than dead weight does.

Stud mounting load

A single 5/16-inch lag bolt driven 1.5 inches into a 2x4 stud holds a lot on its own, and far more in shear than in straight pull-out. Four lags across two studs give you rated capacity many times over what any home TV weighs. That headroom is what you want for a load a kid might grab or a house that might shake.

Drywall anchor load

Plastic expansion anchors are the wrong tool for a TV. They are made for static loads, and drywall gives up strength fast under a load that gets bumped and shaken over years. Use heavy-duty toggle bolts. A pair per bracket side, matched to the pack's rating, carries a heavy screen with room to spare. For any TV worth mounting, that swap from plastic anchors to toggle bolts is not optional.

Frequently asked questions

What height should I mount my TV on the wall?

Put the centre of the screen at seated eye level, around 42 inches from the floor for a normal sofa. At normal TV viewing distance, a few inches of height either way barely reads, so you do not have to be exact. If your seating sits unusually low or high, measure from the floor to your eye level while seated and use that number instead.

Can I mount a TV without hitting a stud?

Yes, with the right toggle bolts. Heavy-duty toggle bolts rated for the load can hold a large TV in 1/2-inch drywall. Never use plastic drywall anchors for a TV. Check the bolt's rated shear load against your TV's weight and leave yourself a wide safety margin.

How do I know if my TV mount bracket is level?

Rest a phone running a level app along the top rail of the wall plate before you tighten fully. A calibrated phone reads to a tenth of a degree in Surface mode. Turn on proximity audio so both hands stay on the bracket while you listen for the steady tone that means level. Check the vertical arms in Plumb mode too, since a bracket can be level across and still hold a twist.

Why does my mounted TV still look crooked after I levelled the bracket?

The TV can hang a touch off the bracket's hooks if the VESA holes on the back are not quite even, or if one hook seats higher than the other. Rest your phone flat on top of the TV after hanging and check Surface mode. Most good mounts have small adjustment screws on the wall plate for exactly this. Adjust until the phone reads 0.0°, then tighten.