Your iPhone and iPad can help prevent hearing loss with an optional tool for measuring headphone audio levels in real-time, and our step-by-step tutorial shows you how to use it.

How Apple helps protect your hearing loss

Apple has created iPhone and Apple Watch features that alert you if the sound levels around you or in your headphones are above the safe level, preventing permanent hearing damage.

With the release of the iOS 13 and watchOS 6 software updates back in 2018, Apple implemented a pair of features that help protect your hearing. The first feature allows iPhone owners to see whether they are being exposed to high volume levels through their headphones for extended periods of time. The other one takes advantage of health sensors in the Apple Watch to detect if the user is being exposed to loud volume levels in their surroundings.

The teaser image for the article explaining how to measure headphone audio levels on iPhone

Beginning with the iOS and iPadOS 14.2, additional hearing options have cropped up. For instance, you can now get a notification when high audio levels could impact your hearing. Also, you can measure headphone audio levels in real-time with a new Control Center option.

Things you should know about hearing

Sound levels are commonly measured in A-weighted decibels. Long-term exposure to volume levels below 80 decibels is considered “OK” and should not affect your hearing.

How to use the Noise app on Apple Watch

In that case, the measurement icon will be green. However, long-term exposure to sounds above 80 decibels can lead to permanent hearing damage. Sounds measured at this level are labeled as “Loud” by Apple, with the measurement icon turning yellow instead of green.

The Sounds and Haptics settings on iPhone with Example Sound Levels in the Hearing section on iPhone

According to Apple:

  • 75 decibels: As loud as a vacuum cleaner.
  • 80 decibels: As loud as a noisy restaurant. Around 5 hours and 30 minutes per day at this level can cause temporary hearing loss. The weekly limit at this level is 40 hours.
  • 85 decibels: As loud as heavy city traffic. Around 1 hour and 45 minutes per day at this level can cause temporary hearing loss. The weekly limit at this level is around 12 hours and 30 minutes.
  • 90 decibels: As loud as a motorcycle. Around 30 minutes per day at this level can cause temporary hearing loss. The weekly limit at this level is 4 hours.
  • 95 decibels: As loud as a car horn. Just 10 minutes per day at this level can cause temporary hearing loss. The weekly limit at this level is around 1 hour and 15 minutes.
  • 100 decibels: As loud as an ambulance siren. Even a few minutes per day at this level can cause temporary hearing loss. The weekly limit at this level is around 20 minutes.

Follow along with the helpful step-by-step tutorial right ahead as we show you how to measure the headphone audio levels on your iPhone in real-time.

How to measure headphone audio levels

Enabling the new Control Center option in iOS and iPadOS 14.2 or later gives you an easy way to glance at the current headphone audio levels (measured in real-time) to ensure that you’re not listening at a volume level which could affect your hearing over time.

  • Open the Settings app on your iPhone or iPad.
  • Touch “Control Center” in the root list.
  • Tap the green “+” button next to “Hearing” to add the option to Control Center.

That’s it, you can now get real-time headphone audio measurement via the Control Center. Simply bring up the Control Center overlay the next time you’re listening to something on your headphones and you’ll see the audio measurement icon along with your current decibel levels. The interface for this resembles the interface in the Noise app on the Apple Watch.

The Control Center on iOS 14 with the Hearing option shown in action on iPhone

These readings are more accurate from compatible headsets like the AirPods that have built-in microphones which can measure the volume levels inside your ear. Measurements from wired headphones like the EarPods are estimated based on the volume of your iPhone.

Browsing records of saved headphone volume levels in Health

With enough data available, you can browse your headphone audio levels capture in the past hour, day, week, month, and year in the Health app on your iPhone: hit the “Home” tab in the app, then touch the “Hearing” option and look for “Headphone Audio Levels.”

How to turn iPhone into a remote mic with AirPods and Live Listen

You’ll want to especially pay attention to those “Loud” records. Again, you’re advised that that long-term exposures to volumes above 80 decibels can permanently damage your hearing.

The Health app on iOS 14 with the Headphone Audio Levels screen on iPhone

To access additional details, such as your volume range, daily average, audio levels by headphone type, and more, hit the button “Show All Filters”. As mentioned, you can optionally elect to receive a notification when loud headphone volume could affect your hearing.

How to get a loud headphone audio notification

You must enable a dedicated option in Settings on iOS and iPadOS 14.2 if you’d like to get notified and have the headphone volume automatically reduced after going above the World Health Organization’s recommended safe weekly listening dose.

  • Open the Settings app on your iPhone or iPad.
  • Touch “Sounds & Haptics” in the root list.
  • Hit “Headphone Safety”.
  • Turn on the option “Reduce Loud Sounds” and set the desired threshold.

Here’s what that looks like.

Headphone Safety settings on iPhone with the Reduce Loud Sounds option turned on

Now when listening to headphone audio for long enough at an unsafe volume, a notification will appear on the display of your iOS device. “If you exceed the recommended 7-day limit, a notification is sent and the volume turned down,” Apple says.

Apple notes that the headphone safety notification cannot be turned off.

You can view the details for a notification in the Health app: tap the Browse tab and choose Hearing → Headphone Notifications, then tap the notification. Apple notes that this notification may be turned on by default in specific markets. “In some countries or regions, you may not be able to turn off Headphone Notifications,” cautions the company.