Device Size Comparison

Galaxy S23 vs Galaxy S25 Ultra

Size Comparison Summary

Galaxy S23 measures 70.9 × 146.3 × 7.6 mm and weighs 168 g. Galaxy S25 Ultra measures 77.6 × 162.8 × 8.2 mm and weighs 218 g. By overall front-face area, Galaxy S25 Ultra is larger than Galaxy S23 (about 2260.6 mm² difference). Galaxy S25 Ultra is 50 g heavier than Galaxy S23. All figures use official millimeter dimensions.

Dimensions Table

Dimension	Galaxy S23	Galaxy S25 Ultra	Difference
Width	70.9 mm	77.6 mm	+6.7 mm
Height	146.3 mm	162.8 mm	+16.5 mm
Thickness	7.6 mm	8.2 mm	+0.6 mm
Weight	168 g	218 g	+50 g

Which is Bigger?

Overall size (width × height): Galaxy S25 Ultra has the larger footprint at 77.6 × 162.8 mm vs 70.9 × 146.3 mm (+2260.61 mm² area).
Width: Galaxy S25 Ultra is wider (77.6 mm vs 70.9 mm, +6.7 mm).
Height: Galaxy S25 Ultra is taller (162.8 mm vs 146.3 mm, +16.5 mm).

Weight Comparison

Galaxy S25 Ultra weighs 218 g and Galaxy S23 weighs 168 g — a difference of 50 g. Galaxy S25 Ultra is 29.8% heavier than Galaxy S23.

Thickness Comparison

Galaxy S25 Ultra is 8.2 mm thick and Galaxy S23 is 7.6 mm thick (+0.6 mm). Galaxy S25 Ultra is the thicker device in hand.

FAQ

Which is bigger, Galaxy S23 or Galaxy S25 Ultra?: Galaxy S25 Ultra has the larger overall footprint (77.6 × 162.8 mm) compared with Galaxy S23 (70.9 × 146.3 mm).
How much heavier is Galaxy S25 Ultra than Galaxy S23?: Galaxy S25 Ultra weighs 218 g and Galaxy S23 weighs 168 g — a difference of 50 g.
Which device is thinner, Galaxy S23 or Galaxy S25 Ultra?: Galaxy S23 is thinner at 7.6 mm vs 8.2 mm for Galaxy S25 Ultra.
What is the width difference between Galaxy S23 and Galaxy S25 Ultra?: Galaxy S23 is 70.9 mm wide and Galaxy S25 Ultra is 77.6 mm wide (+6.7 mm).
Can I compare Galaxy S23 and Galaxy S25 Ultra visually?: Yes. Use the Sizology comparison tool to overlay or place both devices side by side at true millimeter scale with official dimensions.

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