Apple lists the iPhone 17 Pro Max at 163.4 mm tall, 78.0 mm wide, and 8.75 mm thick. If you want the iPhone 17 Pro Max dimensions in inches, the rounded figures are 6.43 by 3.07 by 0.34 inches, while the same measurements in centimeters are 16.34 by 7.80 by 0.875 cm.
The iPhone 17 Pro Max screen size is 6.9 inches, but that number is the display diagonal, not the length of the phone. Apple measures the rounded display as 6.86 inches inside a standard rectangle, with a 2868 by 1320 resolution at 460 ppi, so a “6.9-inch iPhone” is still only 6.43 inches tall.
The iPhone 17 Pro Max weighs 233 grams, or 8.22 ounces. Compared with the smaller 17 Pro, it is 13.4 mm taller, 6.1 mm wider, the same 8.75 mm thick, and 27 grams heavier. The iPhone 17 Pro and iPhone 16 Pro dimensions also make the jump to the Max easier to place against recent 6.3-inch Pro models.
For iPhone 17 Pro Max size in hand, the 6.1 mm width increase over the 17 Pro matters more than the 0.6-inch display-diagonal difference suggests. The 6.3-inch iPhone 17 Pro hardware keeps the same basic Pro feature set in a body that is easier to wrap your fingers around, while the Max gives the screen more physical room.
The iPhone 17 Pro Max thickness remains 8.75 mm across the main chassis, and Apple uses the same aluminum-unibody approach on the smaller Pro. The vapor chamber cooling sits inside that shared design, so the Max does not need a thicker body simply because it has the larger panel.
Size and weight are not dead space either. The bigger Max chassis accommodates the lineup’s larger battery configuration, and its battery endurance under load is one practical reason somebody might accept a 233-gram phone instead of choosing the smaller Pro.
Both generations still use a 6.9-inch display with a 2868 by 1320 resolution at 460 ppi. The iPhone 17 Pro Max size comparison therefore exposes a useful trap in spec sheets because two phones can advertise the same screen size while their outer shells are not physically interchangeable.
Cases are where those tiny differences stop being trivia. A rigid shell has to match the corners, buttons, USB-C opening, camera area, and body depth, so the shared 6.9-inch display does not make a 16 Pro Max case a safe fit for the 17 Pro Max.
Apple’s 8.75 mm figure describes the main body depth rather than the highest point of the rear camera plateau. A protective case adds material around that area as well, and a raised rim can be useful because camera plateau scratches occur on a part of the phone that sits proud of the back.
The iPhone 17 Pro Max width of 78.0 mm is therefore a starting measurement, not the final width of a dressed phone. Thin cases may add little bulk, while rugged designs can change grip and accessory clearance enough that checking the finished case dimensions is more useful than guessing from the phone alone.
The iPhone 17 Pro Max screen dimensions can also mean two different things. Its physical display is marketed as 6.9 inches diagonally, while its pixel dimensions are 2868 by 1320, and neither measurement replaces the chassis dimensions when you are sizing a case, sleeve, mount, or other fitted accessory.
The iPhone 17 Pro Max screen size is 6.9 inches, but that number is the display diagonal, not the length of the phone. Apple measures the rounded display as 6.86 inches inside a standard rectangle, with a 2868 by 1320 resolution at 460 ppi, so a “6.9-inch iPhone” is still only 6.43 inches tall.
The iPhone 17 Pro Max weighs 233 grams, or 8.22 ounces. Compared with the smaller 17 Pro, it is 13.4 mm taller, 6.1 mm wider, the same 8.75 mm thick, and 27 grams heavier. The iPhone 17 Pro and iPhone 16 Pro dimensions also make the jump to the Max easier to place against recent 6.3-inch Pro models.
The Pro Max is wider, not thicker
The practical answer to how big the iPhone 17 Pro Max feels starts with its 78.0 mm width. In an iPhone 17 Pro vs Pro Max size comparison, thickness does not change at all, so the larger grip comes from the extra height and width rather than a deeper slab.For iPhone 17 Pro Max size in hand, the 6.1 mm width increase over the 17 Pro matters more than the 0.6-inch display-diagonal difference suggests. The 6.3-inch iPhone 17 Pro hardware keeps the same basic Pro feature set in a body that is easier to wrap your fingers around, while the Max gives the screen more physical room.
The iPhone 17 Pro Max thickness remains 8.75 mm across the main chassis, and Apple uses the same aluminum-unibody approach on the smaller Pro. The vapor chamber cooling sits inside that shared design, so the Max does not need a thicker body simply because it has the larger panel.
Size and weight are not dead space either. The bigger Max chassis accommodates the lineup’s larger battery configuration, and its battery endurance under load is one practical reason somebody might accept a 233-gram phone instead of choosing the smaller Pro.
The 16 Pro Max is almost the same footprint
The iPhone 17 Pro Max dimensions vs. the 16 Pro Max look nearly identical until you check each measurement. The 16 Pro Max is 163.0 by 77.6 by 8.25 mm and weighs 227 grams, which makes the 17 Pro Max 0.4 mm taller, 0.4 mm wider, 0.5 mm thicker, and 6 grams heavier.Both generations still use a 6.9-inch display with a 2868 by 1320 resolution at 460 ppi. The iPhone 17 Pro Max size comparison therefore exposes a useful trap in spec sheets because two phones can advertise the same screen size while their outer shells are not physically interchangeable.
Cases are where those tiny differences stop being trivia. A rigid shell has to match the corners, buttons, USB-C opening, camera area, and body depth, so the shared 6.9-inch display does not make a 16 Pro Max case a safe fit for the 17 Pro Max.
Cases and camera protection change the real footprint
There is no single official iPhone 17 Pro Max size with a case because case walls, corner reinforcement, raised lips, and camera protection vary by model. Start with the bare 163.4 by 78.0 by 8.75 mm chassis, then use the case maker’s external measurements if pocket space, a car clamp, a gimbal, or a controller has tight tolerances.Apple’s 8.75 mm figure describes the main body depth rather than the highest point of the rear camera plateau. A protective case adds material around that area as well, and a raised rim can be useful because camera plateau scratches occur on a part of the phone that sits proud of the back.
The iPhone 17 Pro Max width of 78.0 mm is therefore a starting measurement, not the final width of a dressed phone. Thin cases may add little bulk, while rugged designs can change grip and accessory clearance enough that checking the finished case dimensions is more useful than guessing from the phone alone.
The iPhone 17 Pro Max screen dimensions can also mean two different things. Its physical display is marketed as 6.9 inches diagonally, while its pixel dimensions are 2868 by 1320, and neither measurement replaces the chassis dimensions when you are sizing a case, sleeve, mount, or other fitted accessory.
