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Apple Watch Series 6 40mm Screen Size

CSS viewport, native resolution, pixel ratio and pixel density for the Apple Watch Series 6 40mm — the numbers you need to design and build for it.

CSS viewport · portrait
162 × 197 px

Native resolution 324 × 394 px at 2× · 326 PPI · 1.57″ · 1:1.22. Design at 162 × 197 and export assets at 2×.

Apple Watch Series 6 40mm display specifications
PropertyValue
CSS viewport (portrait)162 × 197 px
CSS viewport (landscape)197 × 162 px
Native resolution324 × 394 px
Device pixel ratio
Pixel density326 PPI
Screen diagonal1.57 in
Panel size0.99 × 1.21 in
Aspect ratio1:1.22 (exact 162:197)
Total pixels0.13 MP
Released2020
Operating systemwatchOS

Among the 15 watchs on this site, the Apple Watch Series 6 40mm has the 14th largest CSS viewport area. Its 162 px width is 28 px below the 190 px average for this category.

Targeting the Apple Watch Series 6 40mm in CSS

Device-specific media queries are brittle — a new model with the same width will not match. Use them for genuine per-device fixes only, and prefer width buckets for layout.

CSS media query
/* Target Apple Watch Series 6 40mm specifically */
@media only screen
  and (device-width: 162px)
  and (device-height: 197px)
  and (-webkit-device-pixel-ratio: 2) {
  /* … */
}

/* More useful in practice — the width bucket it falls into */
@media (min-width: 162px) { /* … */ }

Compare with other Smartwatches models

Apple Watch Series 6 40mm compared with nearby Smartwatches models
DeviceCSS viewportNativeDPRPPIDiagonal
Apple Watch Series 6 40mm162 × 197324 × 3943261.57″
Apple Watch Series 6 44mm184 × 224368 × 4483261.78″
Apple Watch Series 7 45mm198 × 242396 × 4843261.9″
Apple Watch SE 40mm162 × 197324 × 3943261.55″
Apple Watch Series 8 41mm176 × 215352 × 4303261.69″
Apple Watch SE 44mm184 × 224368 × 4483261.76″
Apple Watch Series 8 45mm198 × 242396 × 4843261.9″
Apple Watch Series 9 41mm176 × 215352 × 4303261.69″
Apple Watch Series 9 45mm198 × 242396 × 4843261.9″

Questions about the Apple Watch Series 6 40mm screen

What is the screen size of the Apple Watch Series 6 40mm?

The Apple Watch Series 6 40mm has a 1.57-inch display. In CSS the viewport measures 162 × 197 px in portrait, and the panel itself has 324 × 394 physical pixels at 326 PPI.

What resolution should I design for on the Apple Watch Series 6 40mm?

Design at 162 × 197 and export assets at . That gives you 324 × 394 px images, which is exactly what the panel renders. Designing directly at 324 × 394 means every measurement is 2 times larger than the CSS values you will write.

What is the device pixel ratio of the Apple Watch Series 6 40mm?

The Apple Watch Series 6 40mm reports a device pixel ratio of 2. One CSS pixel therefore covers 4 device pixels. You can read it in JavaScript with window.devicePixelRatio.

Which other devices have the same viewport as the Apple Watch Series 6 40mm?

1 other device shares the 162 × 197 CSS viewport: Apple Watch SE 40mm. A layout that works on one works on all of them.

Related

Specifications from the manufacturer's published device data. Last verified 7 August 2026. CSS viewport values are the portrait window.innerWidth/innerHeight reported by the stock browser with no browser chrome. See methodology and sources.