How Accurate Is iPhone Measure?

Iphone Measure

Ever wanted to measure something and not have a ruler handy? Well, now there’s an app for that! Whether you want to measure the length of your pet or the distance between two objects, iPhone has your back with its Measure app.

Quick Answer

The app uses the iPhone’s camera to measure objects in the real world. However, it’s not very accurate and shouldn’t be relied on for anything that requires precision measurement. For ballpark estimates, though, it’s a great tool to have in your pocket.

This utility is convenient when you need to know the length of a wall or some object’s size. You can use it in various situations, such as finding the volume of small objects like apples or measuring pie slices at the bakery counter. 

No matter what reason you have, this article will tell you everything you need to know about the iPhone measure app and whether it’s accurate enough for your purposes.

How Accurate Is the iPhone Measure App?

The iPhone Measure is a great little tool. It turns your iPhone into a tape measure, carpenter’s level, and ruler. The only downside is that the measurement is not always accurate and can be off by a few inches.

Measure app users have complained that results are sometimes off and inconsistent since multiple measurements of the same object may sometimes give varying results.

Measurements can be inaccurate anywhere from 2% to 20%. It’s not perfect, but it’s close enough that you can use it for most measuring purposes. It’s fun to play with but isn’t trustworthy enough for anything that matters.

How Does the iPhone Measure App Work?

ARKit, Apple’s AR platform, enables this app to work. ARKit tracks the movement of your device, analyses scenes in the camera view, and then measures the objects based on these references.

The iPhone Measure app uses the phone’s camera sensors to detect objects in the real world and uses augmented reality (AR) to measure them. 

The app debuted in iOS 12 and has been available on subsequent iOS releases. With iPhone 12 Pro and other newer iPad models, there is also a LiDAR Scanner that you can use to measure objects and even people more efficiently and accurately.

How To Use the iPhone Measure App

iPhone’s Measure app is a handy way to measure the real world around you. If you want to use the Measure app, you need to have an iPhone 6s or later. iOS 12 or later is also required.

You can use the Measure app to measure anything by pointing your camera at it and tapping on the screen. Here’s how to do it.

  1. Open the Measure app from the home screen of your iPhone.
  2. Move your iPhone around for the app to get its bearing.
  3. Point your iPhone at the object you want to measure.
  4. Tap the plus (+) button at one corner of the object, drag the ruler to adjust it to the object’s size, and tap plus (+) again. You’ll see the measurement in the middle of this measured line.

So, there you have it! With just a few taps, you can get somewhat accurate measurements of any real-world object with the help of just your iPhone.

How To Get More Accurate Measurements

When it comes to taking rough measurements with your iPhone, the Measure app is a great tool to use. However, you can do a few things to get more accurate measurements. Here are some tips.

  • Make sure you are in a well-lit area while taking measurements. This will help the camera on your iPhone to get a clear shot of whatever you’re measuring.
  • Take multiple measurements and average them out. This will help cancel out any potential errors that might occur with just one measurement.
  • Move the camera around after the measurement has been taken, as this can help refine the measurement and give you more accurate results.

By following these tips, you can be confident that you’re getting the most accurate measurements possible with the Measure app on your iPhone.


The iPhone Measure app is a helpful tool that can give you a general idea of the size of an object. However, it is not 100% accurate and should not be relied on for precise measurements. 

Frequently Asked Questions

Is the iPhone 12 Measure app accurate?

iPhone 12 Pro features a LiDAR scanner that makes taking measurements easier, so the Measure app is slightly more accurate than the one on earlier models.

Can you measure a room with an iPhone?

By walking around the room with the Measure app open and marking points at the corners and doorways, you can get a reasonably accurate estimate of the dimensions of your room. If you need accurate measurements, then you might need the other tools.

How accurate is the iPhone LiDAR scanner?

The iPhone 12 Pro and newer models are equipped with a depth-scanning LiDAR sensor that can produce pretty accurate 3D representations of close-range objects up to 5m away.

What is the best tape measure app for iPhone?

As of iOS 12 and newer, all iPhones come pre-installed with a Measure app by Apple, which is pretty decent, but you can also download third-party apps from the App Store.

Leave a Comment

Your email address will not be published. Required fields are marked *