Size comparison

Galaxy S25 Ultra vs OnePlus 13 size

The Galaxy S25 Ultra measures 162.8 x 77.6 x 8.2 mm and the OnePlus 13 measures 162.9 x 76.5 x 8.5 mm. The Galaxy S25 Ultra is the bigger phone. Its front covers 1.4% more area than the OnePlus 13.

Scaled to fit. Calibrate once to see real size.

Galaxy S25 Ultra218 g162.8 x 77.6 x 8.2 mm
OnePlus 13213 g162.9 x 76.5 x 8.5 mm

Outlines are drawn from published dimensions. Screen and camera shapes are simplified.

How the Galaxy S25 Ultra measures up

Height, Galaxy S25 Ultra

-0.1 mm

Width, Galaxy S25 Ultra

+1.1 mm

Thickness, Galaxy S25 Ultra

-0.3 mm

Weight, Galaxy S25 Ultra

+5 g

Spec	Galaxy S25 Ultra	OnePlus 13	Difference
Height	162.8 mm 6.41 in	162.9 mm 6.41 in	-0.1 mm (-0.1%)
Width	77.6 mm 3.06 in	76.5 mm 3.01 in	+1.1 mm (+1.4%)
Thickness	8.2 mm 0.32 in	8.5 mm 0.33 in	-0.3 mm (-3.5%)
Weight	218 g 7.7 oz	213 g 7.5 oz	+5 g (+2.3%)
Screen	6.9 in	6.82 in	+0.08 in (+1.2%)
Front footprint	126.3 cm²	124.6 cm²	+1.7 cm² (+1.4%)

What the difference feels like

The Galaxy S25 Ultra is 1.1 mm wider. That is small, but you can feel it when you wrap your hand around the phone, and it adds a little stretch for one-handed typing.

Height is almost identical, so they sit the same in a pocket.

The OnePlus 13 is 0.3 mm thicker. Manufacturers measure thickness without the camera bump, so the real difference at the camera can be larger.

The Galaxy S25 Ultra is 5 g heavier, which most people will not notice day to day.

Common questions

Is the Galaxy S25 Ultra bigger than the OnePlus 13?

The Galaxy S25 Ultra is the bigger phone. Its front covers 1.4% more area than the OnePlus 13. Height differs by 0.1 mm and width by 1.1 mm.

Will a OnePlus 13 case fit the Galaxy S25 Ultra?

No. A case is cut for one model's exact size, buttons and camera, and these two differ by 0.1 mm in height and 1.1 mm in width. Buy a case made for the Galaxy S25 Ultra.

Which is easier to use with one hand?

The OnePlus 13, because it is 1.1 mm narrower. Width matters more than height for reaching across the screen with your thumb.

Cases and prices

Galaxy S25 Ultra cases on Amazon Galaxy S25 Ultra on Amazon OnePlus 13 cases on Amazon OnePlus 13 on Amazon

Shop links go to Amazon. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.

Related comparisons

Sources

Galaxy S25 Ultra: manufacturer spec page
OnePlus 13: manufacturer spec page

See each phone's page for the full spec: Galaxy S25 Ultra and OnePlus 13.