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What Percentage of Hearing Loss Is Legally Deaf?
Find out what level of hearing loss is classed as legally deaf, how hearing is measured, and when to book a hearing test for clear professional advice.
3/26/20263 min read


Many people ask whether there is a set percentage of hearing loss that makes someone legally deaf. It is a fair question, especially if hearing problems are starting to affect work, daily communication, or overall quality of life.
The short answer is that there is no single percentage used in the UK to decide if someone is legally deaf. In most cases, hearing is measured in decibels rather than percentages. An audiologist will look at how much sound you need to hear tones at different pitches, then use those results to assess the level of hearing loss.
At Hear Pure, we often meet patients who are confused by the language around hearing loss. Terms such as mild, moderate, severe, and profound are more commonly used than percentages. Understanding what those terms mean can help you make sense of your hearing test results and decide what to do next.
How Hearing Loss Is Usually Measured
Hearing loss is normally measured through a hearing assessment that checks the quietest sounds you can hear. These sounds are tested at different frequencies, because hearing problems do not always affect every sound in the same way.
Results are recorded in decibels hearing level, often shortened to dB HL. In general terms, mild hearing loss starts at around 20 to 40 dB, moderate hearing loss falls around 41 to 70 dB, severe hearing loss is around 71 to 95 dB, and profound hearing loss is usually over 95 dB. People with profound hearing loss are often described as deaf, but the full picture also depends on how well they understand speech and how hearing loss affects daily life.
This is why a percentage can be misleading. Two people may both say they have lost 50% of their hearing, yet their hearing needs, speech understanding, and listening ability may be very different.
What Does Legally Deaf Mean?
The phrase legally deaf is often used in conversation, but it does not always have one fixed medical meaning. In practice, it usually refers to someone whose hearing loss has a major effect on communication and everyday tasks.
In the UK, hearing loss may be treated as a disability under the Equality Act 2010 if it has a substantial and long-term effect on normal day-to-day activities. That means the focus is not simply on a number. It is also about how hearing loss affects your life, your work, your confidence, and your ability to communicate with others.
For some people, this may include missing parts of conversation, struggling in group settings, or finding it hard to follow speech even when using hearing aids. For others, tinnitus, sound sensitivity, or a build-up of ear wax may also play a part in their overall hearing health.
Why a Proper Hearing Test Matters
If you are worried about your hearing, the best next step is a professional hearing test. Online charts and general guides can be useful, but they cannot tell you exactly what is happening with your hearing.
At Hear Pure, we carry out comprehensive hearing tests at our hearing clinic in Chester and Wirral. Our team takes time to explain your results clearly, answer questions, and give honest advice about treatment, hearing aids, ear wax removal, tinnitus care, and ongoing support.
Whether your hearing loss is mild or more advanced, getting clear answers can make a real difference. A proper hearing assessment helps you understand where you stand and what support may help you hear better in daily life.
Speak to Hear Pure
If you are asking what percentage of hearing loss is legally deaf, there is a good chance you want clarity about your own hearing. We are here to help you find that out.
Book an appointment with Hear Pure in Chester or Heswall for a full hearing assessment and practical advice from an experienced team that puts your hearing first.
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