iPhone Size Comparison
Select 2 or 3 iPhone models to compare their physical dimensions to scale. See exactly how much bigger, thinner, or heavier one model is versus another.
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Why iPhone Size Matters More Than You Think
When Apple announces a new iPhone, the spec sheet differences can seem trivial: half a millimeter here, a gram there. But those tiny numbers have real consequences that most buyers overlook until it is too late. Consider case compatibility: if your new iPhone is even 0.5mm wider or 0.3mm thicker than the model your case was designed for, it simply will not fit. That is why so many people buying the iPhone 16 Pro discover their iPhone 15 Pro case pinches at the camera bump or leaves a gap along the edges. Every fraction of a millimeter matters when tolerances are measured in tenths.
Weight is another underestimated factor. The difference between 170g and 187g does not sound like much, but hold both phones for an hour of scrolling and you will notice. Anything over a 15g gap is perceptible when the phone sits in your pocket all day, and it becomes obvious during long calls held up to your ear. The iPhone Air at 165g versus the 17 Pro Max at 233g is a 68g chasm — nearly the weight of a deck of cards added to your pocket.
Screen size versus body size is the other dimension people get wrong. The iPhone Air manages a 6.5-inch display while being thinner than the 16 Pro because Apple pushed the bezels to their absolute minimum and stretched the body slightly taller. Meanwhile, the iPhone 16e packs a 6.1-inch screen into the smallest modern iPhone body thanks to its compact 138.8mm height. Screen diagonal alone does not tell you how the phone feels in hand.
The one-handed usability threshold sits around 71mm of width. Below that, most adults can comfortably reach the opposite corner with their thumb. Above it, one-handed typing becomes a stretch. That is why the standard iPhone 16 at 71.6mm feels fine for most people, while the 13 Pro Max at 78.1mm is a committed two-hander. If you frequently use your phone while carrying groceries, walking the dog, or standing on the train, that 6-7mm difference is the line between convenience and fumbling.
How We Measure
All dimensions in this tool are sourced directly from Apple's official technical specifications published on apple.com. Height, width, and depth are in millimeters; weight is in grams. The SVG visualization scales at 2 pixels per millimeter, making the overlay close to life-size on most desktop monitors. On mobile screens the visualization scales down proportionally while preserving the exact ratios between models, so relative differences remain accurate regardless of your device.
Frequently Asked Questions
Are these iPhone sizes shown to actual scale? +
Yes. The SVG rendering uses a ratio of 2 pixels per millimeter, taken directly from Apple's published dimensions. On a standard 96 DPI desktop monitor, this produces outlines that are very close to the physical size of each iPhone. On mobile devices and high-DPI screens, the tool scales down proportionally so the relative differences between models remain perfectly accurate even if the absolute size on screen is smaller.
Do 1-2mm size differences actually matter? +
Absolutely. Case manufacturers design their products with sub-millimeter tolerances. For example, the iPhone 14 Pro is 147.5mm tall while the iPhone 15 Pro is 146.6mm — a 0.9mm difference that means a 14 Pro case will be slightly loose on a 15 Pro. The camera bump position also shifts between generations, making cross-model case use unreliable. Beyond cases, even a 2mm width increase can push a phone past the comfortable one-handed use threshold for people with smaller hands.
Which iPhones are the same size? +
Several iPhones share identical external dimensions. The iPhone 12, iPhone 13, and iPhone 14 all measure 146.7 x 71.5mm (though depth varies slightly between 7.4mm and 7.8mm). The iPhone SE (2nd generation, 2020) and iPhone SE (3rd generation, 2022) are dimensionally identical at 138.4 x 67.3 x 7.3mm. The iPhone 11 and iPhone XR share the same 150.9 x 75.7 x 8.3mm body. The iPhone 12 Pro Max and iPhone 13 Pro Max both measure 160.8 x 78.1mm. Note that even when height and width match, minor depth differences can still affect case fit.