How do augmented reality measurement apps work

Use the tape measure app on your iPhone, iPad, or iPod touch

Here you can find out how you can measure real objects with the measuring tape app and the camera of your iPhone, iPad or iPod touch. Learn how to find objects and people more easily with the LiDAR scanner on the iPad Pro (12.9 ", 4th generation), the iPad Pro (11", 2nd generation), the iPhone 12 Pro and the iPhone 12 Pro Max can measure.


Take a single measurement

  1. Open the Tape Measure app, then follow the on-screen instructions that ask you to move your device. This gives your device a reference system for the measured object and the surface on which it is located. Move your device until you see a circle with a dot in the center.
  2. Position your device so that the point is above the starting point of the measurement and then tap the plus symbol.
  3. Move your device slowly until the point is above the end point of the measurement, then tap the plus symbol again.

After the measurement, you can adjust your start and end point. Place your finger on one of the points and drag it to the desired location. The measurement changes as the point moves.

Save a measurement

While the measurement is displayed, you can tap the corresponding number to see it in inches or centimeters. Tap on "Copy". The value is then sent to the clipboard so that you can use it in another app. Tap Erase to start over.

You can also take a photo showing the object and its measurement. Just tap the camera shutter icon. The photo will then appear in the lower left of the screen. Tap it to make changes with "Bookmarks" or swipe left to save it in the Photos app.

Take multiple measurements

  1. After you have taken the first measurement, move your device so that the point is placed somewhere else on the object or near the object.
  2. Tap the Add buttonto start the second measurement. Then move the device to place the point along the existing measurement. *
  3. Tap the plus icon again. The second measurement is then displayed.
  4. Repeat these steps to take as many measurements as you want.

Tap the undo buttonto remove the last measurement, or tap Clear to start over.

* Additional measurements must start or end along the lines of an existing measurement. Otherwise, all previous measurements will be replaced with the most recent.

Measure a rectangle

When your device detects that the measured object is a square or a rectangle, it automatically surrounds the object with a measuring frame. Tap the plus icon. Measurements for the object's latitude and longitude are displayed. Move the device slightly to display the calculated area of ​​the object.

While the measurement is displayed, you can tap the calculated area value to see the length of the diagonal and the area in square inches or square meters.

Use the Tape Measure app with the iPad Pro (12.9 ", 4th generation), iPad Pro (11", 2nd generation), iPhone 12 Pro, and iPhone 12 Pro Max

iPad Pro (12.9 ", 4th generation), iPad Pro (11", 2nd generation), iPhone 12 Pro, and iPhone 12 Pro Max use the LiDAR scanner to help you identify objects with the tape measure app to measure faster and more accurately.

Not sure whether your device has a LiDAR scanner? Here you can find out which iPad model or iPhone model you have.

Measure a person's height

When the tape measure app detects a person in the viewfinder, it automatically measures their height from the floor to the top of their head, hat or hair. Tap the camera shutterto take a photo of the person with the height measurement. You can then edit the photo with "tags", save it and share it.

Here are some tips for getting a good size measurement:

  • Make sure your surroundings are well lit.
  • Avoid dark backgrounds and reflective surfaces.
  • Make sure the person you are measuring has no face or head covered, e.g. B. through a face mask, sunglasses or a hat.
  • Move away from the person you are measuring. You may be standing too close to her.

Use vertical and edge guides

On the iPad Pro (12.9 ", 4th generation), the iPad Pro (11", 2nd generation), the iPhone 12 Pro and the iPhone 12 Pro Max you will find help lines, the height and straight edges of furniture and counters and other objects easily and precisely. The guidelines are automatically displayed along the edges when you take a vertical measurement.

Match the start and end points with the yellow guide and tap on a measurement to view additional information on the iPad Pro. You can view the height, distance, angle, and more.

Finer measurements with the ruler view

The tape measure app on the iPad Pro (12.9 ", 4th generation), iPad Pro (11", 2nd generation), iPhone 12 Pro and iPhone 12 Pro Max places a ruler over the measuring line to indicate the dimensions of the object to be mapped on a precise scale. Move iPad Pro close to a measurement line until the ruler view appears. Then tap the camera shutter to take the photo so you can use the scale when planning your project.

View measurement history

Tap the List buttonto view all measurements, including captured screenshots, that you took during the last session. This makes it easier for you to keep an eye on the dimensions when you measure a room or several objects. You can copy the determined measurements into Notes, Mail or any app in which you want to save the list, or delete them to start over.

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