Ruler for iPhone SE (1st gen)

0cm

Line the object up with 0 at the top edge, then drag on the scale.

17.3 mm

US7

UKN

EU54

Lay a ring that fits on the circle. Change the size until the circle just fills the inside of the band.

Ruler on iPhone SE (1st gen), actual size

This page is set for the iPhone SE (1st gen) screen, which is 49.9 mm wide in portrait. The scale runs about 8.9 cm down the screen. Open it in Safari at the normal page zoom and it reads true straight away.

If you use Display Zoom, or the reading looks off, tap Check with a card and match any bank card (85.6 mm).

Ruler for your iPhone

Each page is set for that model's screen, so it is the right size the moment it opens.

More small tools like this

One short email when something new is ready. No spam, unsubscribe any time.