How big is the Pixel 8 and which gym mounts fit its size

Part of our guide on protecting phone from scratches on rack

Exact Pixel 8 dimensions and what they mean for mounts

The Google Pixel 8 measures 150.5 mm tall, 70.8 mm wide, and 8.9 mm thick. That's 5.93 × 2.79 × 0.35 inches. These are the bare-phone figures straight from the manufacturer. They matter because every phone mount lists a maximum device size, and you need to know whether the Pixel 8 falls inside that window.

A case adds thickness and width. Most protective cases put the phone at 155-160 mm tall, 75-80 mm wide, and 12-14 mm thick. Slim cases stay closer to 75 mm wide and 12 mm thick. Rugged cases with raised corners push past 80 mm wide and 14 mm thick. Width becomes the bottleneck: a mount rated to 85 mm will reject an 80 mm phone-plus-case combo because the tolerances are tight and rubber grips compress unevenly.

The depth affects clamp-style mounts that squeeze from front and back. An 8.9 mm phone sits comfortably in mounts designed for devices up to 15 mm thick. Once you add a case, you're at 12-14 mm, which still fits most gym mounts but rules out ultra-slim car cradles meant for naked phones. Check the mount's thickness spec if you run a heavy-duty case with a kickstand or card slot on the back.

Rounded corners and screen curvature don't usually interfere with mount jaws, but camera bumps do. The Pixel 8's camera bar sits 4-5 mm proud of the body on the top-left corner. Side-grip mounts avoid this area entirely. Back-adhesive mounts need the plate positioned below the camera bar, which leaves enough surface for a 50-60 mm magnetic disc. If that sounds like your situation, read up on mount pixel 8 pro on hollow treadmill next.

How the Pixel 8 compares to the 8 Pro and 8a

The Pixel 8 Pro measures 162.6 × 76.5 × 8.8 mm. That's 12 mm taller and nearly 6 mm wider than the standard Pixel 8. The Pro's extra height rarely causes mount problems because most adjustable grips open to 170 mm or more. The width difference matters more: a mount that barely accommodates a cased Pixel 8 at 80 mm will reject a cased 8 Pro at 82-85 mm.

The Pixel 8a comes in at 152.1 × 72.7 × 8.9 mm. It's fractionally taller and wider than the Pixel 8, but the differences are negligible for mount fitment. Both phones use the same mounting solutions. The 8a's slightly narrower profile gives you a millimeter of extra clearance in tight clamp jaws, which makes no practical difference.

Weight affects magnetic hold strength but not mount compatibility. The Pixel 8 weighs 187 grams, the 8 Pro 213 grams, and the 8a 188 grams. A magnetic mount rated for 300-400 grams holds any of them securely during a treadmill run or spin session. Adhesive-backed magnetic plates lose grip under vibration when the phone exceeds 250 grams cased, so check your total weight with the case on. We cover running treadmill phone mount for pixel 8 pro in its own article.

If you're choosing between models based on mount compatibility, the standard Pixel 8 and 8a share the same real-world fit. The 8 Pro's width pushes it into the next size bracket, so verify the mount's stated width maximum before assuming it works. Adjustable mounts rated to 90-95 mm width handle all three models with room to spare.

Which mount specifications match the Pixel 8

Look for mounts rated to 85 mm width minimum and 165 mm height minimum. Those figures accommodate a cased Pixel 8 with enough margin that the jaws close without straining. Mounts listing 80 mm max width will technically fit a bare Pixel 8 but fail once you add a case. Mounts advertising "up to 6.5-inch phones" usually mean screen diagonal, which correlates poorly with actual body dimensions; ignore the screen-size claim and check the millimeter specs.

Clamp-style mounts use spring-loaded or screw-tightened jaws that grip the phone's sides. These work well for gym equipment because they distribute pressure evenly and don't rely on adhesive. A good clamp mount opens to 90-95 mm wide and extends to 170-180 mm tall, giving you clearance for thick cases and future phone upgrades. The jaws should have rubber or silicone pads to prevent scratching and improve friction. There is more on retrofitting thin cases with magnetic sheets in a separate guide.

Adhesive magnetic mounts need a steel or magnetic ring stuck to the phone or case. The mount itself is a disc or puck that attaches to the equipment with 3M VHB tape or a mechanical clamp. The Pixel 8 has no built-in magnets like an iPhone 12 or later, so you add a thin ring to the back of the case. Position it below the camera bar and centered left-to-right. A 55-60 mm diameter ring provides enough hold for a 187-gram phone during vibration and movement.

Suction mounts rarely appear in gyms because they need a flat, non-porous surface and fail under sustained vibration. Skip them for treadmill or spin bike use. Gooseneck mounts with a flexible arm and clamp base suit power racks and stationary setups where you want to angle the screen without repositioning the whole mount. The Pixel 8's weight and size sit comfortably in any gooseneck rated for tablets up to 10 inches.

• Width capacity: 85-95 mm to fit cased phones without forcing the jaws
• Height capacity: 165-180 mm for current and future devices
• Grip style: rubberized pads or silicone inserts to prevent slipping
• Base attachment: clamp for round or square tubing, adhesive plate for flat surfaces, or bolt-through for permanent setups

Most gym mount failures happen because the phone-plus-case width exceeds the grip's stated maximum, not because of height.

Magnetic mounts and the Pixel 8

The Pixel 8 has no built-in magnetic array. iPhones from the 12 onward carry MagSafe magnets that snap to compatible mounts. The Pixel 8 doesn't. You need to add a ring adapter if you want magnetic mounting. These rings are thin steel or ferrite discs with adhesive backing. Peel the liner, stick it to the back of your case, and the phone now clings to any magnetic mount. It helps to understand free shipping on home treadmills before going further.

A 55-60 mm ring provides enough surface contact for a 187-gram phone. Smaller rings reduce hold strength; larger rings interfere with wireless charging coils or extend past the case edges on narrow phones. Center the ring horizontally and place it in the lower half of the phone's back, below the camera bar. This keeps the center of mass close to the mount and avoids blocking the cameras.

Qi2 is the wireless charging standard that incorporates MagSafe-style magnets. Some newer Qi2 cases for the Pixel 8 have the magnets molded in, so the ring adapter becomes unnecessary. Check whether your case lists Qi2 compatibility before buying a separate ring. If the case already has magnets, a second ring adds no benefit and doubles the thickness.

Magnetic hold depends on ring quality and mount strength. Cheap rings use weak adhesive that peels under heat or humidity. Good rings use 3M VHB tape that bonds permanently to TPU or polycarbonate cases. The mount itself needs a magnet array rated for at least 300 grams to handle the phone's weight during a treadmill run or when the bike hits a bump. Test the hold by shaking the mount before you start a workout; if the phone shifts, the ring or mount isn't strong enough.

Treadmill and spin bike mounting for the Pixel 8

Treadmills shake. Spin bikes shake harder. The mount needs a grip that survives continuous vibration at 3-5 Hz without the phone rattling loose. Clamp-style mounts with four-point contact work better than two-point clips because the load spreads across more surface area. Magnetic mounts fail on high-vibration equipment unless the ring and mount both exceed the minimum spec; even then, a hard stride or resistance spike can pop the phone off.

Handlebar mounts for spin bikes typically clamp onto 25-35 mm diameter tubing. Measure your bike's handlebar before ordering. The clamp should tighten with a thumbscrew or lever that you can adjust without tools, because you'll reposition it as you find the best viewing angle. The phone's weight and wind resistance don't matter indoors, so a lightweight plastic clamp works as well as a metal one.

Treadmill console mounts attach to the display post or handlebar. Some treadmills have a built-in phone tray, but these are too shallow for modern phones and the Pixel 8 will slide out the moment you start running. A clamp mount that grips the vertical post or a magnetic disc stuck to the console's bezel keeps the phone stable. Position the phone 30-50 cm from your eyes and angled slightly downward so you glance at it without tilting your head.

Cable routing matters if you're charging while training. The Pixel 8's USB-C port sits at the bottom center. A mount that positions the phone vertically with the port pointing down lets the cable hang naturally. If the mount forces the phone horizontal or upside-down, the cable sticks out awkwardly and snags on your arm or the equipment. Some mounts have a cable pass-through notch; these are worth the extra few dollars.

1. Measure the handlebar or post diameter with calipers or a tape measure wrapped around the tube.
2. Choose a clamp mount rated for that diameter plus 5-10 mm margin.
3. Install the mount with the clamp lever accessible so you can adjust it between sessions.
4. Insert the Pixel 8 and run in place or pedal at moderate intensity for 30 seconds to verify the phone stays put.
5. Route the charging cable through any pass-through notches and secure excess cable with a Velcro strap.

Power rack and home gym mounting options

Power racks and squat stands use 50-75 mm square or round tubing, thicker than cardio equipment. The mount's clamp needs to open wide enough to fit this tubing and lock tight enough that a barbell drop or plate rattle doesn't shake it loose. Metal clamps outlast plastic ones in a home gym environment where chalk dust and sweat corrode cheap materials.

Adhesive magnetic discs stick to the upright or crossbar and hold the phone via a ring adapter. These work well when you want a semi-permanent mount that doesn't require tools to remove. Clean the tubing with isopropyl alcohol before applying the disc, and let the adhesive cure for 24 hours before loading the phone. A 60-70 mm diameter disc provides enough holding area for the Pixel 8 during exercises where the rack shakes but you're not directly impacting it.

Gooseneck mounts with a clamp base give you the most positioning flexibility. The flexible arm bends into any angle, so you can film a lift from the side, watch a program straight-on, or tuck the phone out of the way between sets. The Pixel 8's 187-gram weight needs a gooseneck with a stiff core rated for at least 300 grams, or the arm will sag and the phone will droop mid-workout. Cheap goosenecks lose rigidity after a few weeks of repositioning.

Wall-mounted options suit dedicated home gym spaces. A magnetic plate or small shelf bolted to the wall at eye level keeps the phone off the equipment entirely. This approach works best if you're filming yourself and need a fixed camera angle, or if you run a timer that you glance at between exercises. The Pixel 8's dimensions fit any small shelf or ledge deeper than 10 mm.

FAQ

I've tested a dozen gym mounts with phones ranging from 140 mm to 165 mm tall, and width is the dimension that kills compatibility nine times out of ten.