Measure dimensions with iPhone

Use the Measure app and your iPhone camera to measure nearby objects. iPhone automatically detects the dimensions of rectangular objects, or you can manually set the start and end points of a measurement.

A framed photograph is measured, with its width showing at the bottom edge. The Take Picture button is in the lower-right corner. The green Camera In Use indicator appears at the top right.

For best results, use Measure on well-defined objects located 0.5 to 3 meters (2 to 10 feet) from iPhone.

Note: Measurements are approximate.

Start a measurement

Open Measure , then use the iPhone camera to slowly scan nearby objects.
Position iPhone so that the object you want to measure appears on the screen.

Note: For your privacy, when you use Measure to take measurements, a green dot appears at the top of the screen to indicate your camera is in use.

Take an automatic rectangle measurement

When iPhone detects the edges of a rectangular object, a white box frames the object; tap the white box or to see the dimensions.
To take a photo of your measurement, tap .

Take a manual measurement

Align the dot at the center of the screen with the point where you want to start measuring, then tap .
Slowly pan iPhone to the end point, then tap to see the measured length.
To take a photo of your measurement, tap .
Take another measurement, or tap Clear to start over.

Use edge guides

On iPhone 12 Pro and iPhone 12 Pro Max, you can easily measure the height and straight edges of furniture, countertops, and other objects using guide lines that appear automatically.

Position the dot at the center of the screen along the straight edge of an object until a guide appears.
Tap where you want to begin measuring.
Slowly pan along the guide, then tap at the endpoint to see the measured length.
To take a photo of your measurement, tap .

Use Ruler view

On iPhone 12 Pro and iPhone 12 Pro Max, you can see more detail in your measurements with Ruler view.

After measuring the distance between two points, move iPhone closer to the measurement line until it transforms into a ruler, showing incremental inches and feet.
To take a photo of your measurement, tap .

Helpful?

iPhone User Guide