WatchFitTool

Samsung Galaxy Watch8 Wi-Fi 40mm vs Galaxy Watch8 Wi-Fi 44mm

Size, specs & wrist fit compared

Samsung Galaxy Watch8 Wi-Fi 40mm
Samsung Galaxy Watch8 Wi-Fi 40mm
40.4mm × 42.7mmView specs
Samsung Galaxy Watch8 Wi-Fi 44mm
Samsung Galaxy Watch8 Wi-Fi 44mm
43.7mm × 46mmView specs

Which one fits you

Under 14.5 cm (5.7 in) round, the 44mm's lugs overhang and the 40mm's do not; the 40mm fills the wrist at 14–15.5 cm, the 44mm at 15–17 cm.

What else differs

  • Screen: the 44mm has the larger screen, 1.47 in across against 1.34 in on the 40mm.
  • Battery: about 2 days each in everyday use as rated, though the 44mm carries a 435 mAh cell against 325 mAh in the 40mm.

The Galaxy Watch8 Wi-Fi 40mm is the thinnest of smartwatches 40mm across and the Galaxy Watch8 Wi-Fi 44mm is thinner than 97% of those 44mm across — so both wear flatter than their widths suggest.

The Galaxy Watch8 Wi-Fi 44mm is 3.3mm wider, 3.3mm longer and 4g heavier than the Galaxy Watch8 Wi-Fi 40mm.

Galaxy Watch8 Wi-Fi 40mm

Galaxy Watch8 Wi-Fi 44mm

Case width
40.4mm
43.7mm+3.3mm
Lug-to-lug
42.7mm
46mm+3.3mm
Thickness
8.6mm
8.6mmsame
Weight
30g
34g+4g

Galaxy Watch8 Wi-Fi: 40mm or 44mm by wrist size

Wrist round (mm left each side)40mm44mm
14 cm / 5.5 inSweet spot (1.2mm)Overhangs (0.4mm over)
15 cm / 5.9 inSweet spot (2.8mm)Bold (1.2mm)
16 cm / 6.3 inBalanced (4.5mm)Sweet spot (2.8mm)
17 cm / 6.7 inBalanced (6.1mm)Balanced (4.4mm)
18 cm / 7.1 inBalanced (7.7mm)Balanced (6mm)
19 cm / 7.5 inUnderstated (9.3mm)Balanced (7.6mm)
20 cm / 7.9 inUnderstated (10.9mm)Balanced (9.3mm)

How the fit model works · Size chart for every wrist

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Samsung Galaxy Watch8 Wi-Fi 40mm

Samsung

Galaxy Watch8 Wi-Fi 40mm

Samsung Galaxy Watch8 Wi-Fi 44mm

Samsung

Galaxy Watch8 Wi-Fi 44mm

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Battery life compared

40mm44mm

  • Battery life

    2 days
    2 days

More comparisons

2D Dimension Schematics

Top view
Side view
  • Samsung Galaxy Watch8 Wi-Fi 40mm 40.4mm × 42.7mm · 8.6mm thick
  • Samsung Galaxy Watch8 Wi-Fi 44mm 43.7mm × 46mm · 8.6mm thick

3D preview

Galaxy Watch8 Wi-Fi 40mm vs Galaxy Watch8 Wi-Fi 44mm on a wrist

Open 3D try-on

Specifications

The short version

11 key specs
SpecSamsungGalaxy Watch8 Wi-Fi 40mmSamsungGalaxy Watch8 Wi-Fi 44mm
Case Width40.4mm43.7mm
Lug-to-Lug42.7mm46mm
Thickness8.6mm8.6mm
Weight30g34g
ShapeCircularCircular
Water Resistance5 ATM5 ATM
GPSYesYes
Display typeOLED/AMOLEDOLED/AMOLED
Screen size1.34 inches1.47 inches
Battery life2 days2 days
Released20252025

Where the specifications differ

7 differences
SpecSamsung Galaxy Watch8 Wi-Fi 40mmSamsung Galaxy Watch8 Wi-Fi 44mm
Design
width40.443.7
height42.746
volume14.84 cm³17.29 cm³
weight30 g34 g
resolution438 x 438 px480 x 480 px
screen size1.34 inches1.47 inches
Battery
battery power325 mAh435 mAh

The other 104 specifications both list are identical.

Full Samsung Galaxy Watch8 Wi-Fi 40mm specifications →Full Samsung Galaxy Watch8 Wi-Fi 44mm specifications →