Measure dimensions with iPad
On supported models, use the Measure app 
and your iPad camera to measure nearby objects and surfaces—you can manually set the start and end points of a measurement, have iPad automatically detect the dimensions of rectangular objects, and more.
For best results, use Measure on well-defined objects located 0.5 to 3 meters (2 to 10 feet) from iPad.
Note: Measurements are approximate.
Start a measurement
Open Measure
, then use the iPad camera to slowly scan nearby objects.Position iPad so that the object you want to measure appears on the screen.
Take an automatic rectangle measurement
When iPad detects the edges of a rectangular object, a box frames the object; tap the box 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 iPad 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 iPad Pro 11-inch (2nd generation) and iPad Pro 12.9-inch (4th generation), you can easily and precisely measure the heights 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 iPad Pro 11-inch (2nd generation) and iPad Pro 12.9-inch (4th generation), you can see more detail in your measurements with ruler view.
After measuring the distance between two points, move iPad closer to the measurement line until it transforms into a ruler, showing incremental inches and feet.
To take a photo of your measurement, tap
.