Degrees of hearing loss

Hearing loss affects people in different ways. For some, it develops gradually and is barely noticeable at first; for others, it may happen more suddenly or be tied to a medical condition. While aging is one of the most common contributors to hearing loss, many other factors—including noise exposure, infections, hereditary conditions, and certain medications—can also affect how well we hear. 

Understanding the degrees of hearing loss helps explain why one person may struggle only in noisy environments while another finds everyday conversation difficult. These categories also help Hearing Care Providers (HCP) recommend the right support. 

• What causes hearing loss? 

• What are the degrees of hearing loss? 

• Understanding each degree of hearing loss 

• When should you see a Hearing Care Provider (HCP)?

Note: Our Hearing Care Providers (HCPs) are here to support your hearing health and provide personalized guidance. However, if you're concerned about medical issues affecting your hearing, always consult your healthcare provider first. 

What causes hearing loss? 

Hearing loss can stem from many different sources, and its impact on communication can lead some people to withdraw from social interactions or feel frustrated during conversations. Some of the most common causes of hearing loss include: 

• Aging 

• Prolonged noise exposure 

• Medical conditions (e.g., meningitis, chronic infections) 

• Hereditary influences 

• Ototoxic medications 

These factors can affect one or both ears, and the severity may vary widely between individuals. Fortunately, understanding the cause is often the first step toward effective treatment. 

What are the degrees of hearing loss? 

“Degrees” of hearing loss describe how loud a sound must be before a person can detect it. Hearing Care Providers (HCPs) measure this using “decibels hearing level” (dBHL). For most adults, hearing is considered normal when soft sounds between 0–25 dB can be detected across the main speech frequencies. 

Hearing loss occurs when someone can detect sound only above that range. The severity category depends on how many decibels must be added before the sound becomes audible. Because hearing loss can occur at different pitches—and because each brain processes sounds differently—two people with the same degree of hearing loss may still experience communication challenges differently. 

Understanding each degree of hearing loss 

Mild hearing loss 

People with mild hearing loss typically have difficulty hearing soft sounds between 26–40 dB. They may miss quiet speech, children’s voices, or subtle consonant sounds like t, f, or s. Conversations in quiet settings may still feel manageable, but background noise makes understanding more challenging. Many individuals at this stage report that others “mumble" or that they need to ask for repeats more often. A hearing test can help clarify whether mild loss is present. 

Moderate hearing loss 

Moderate hearing loss typically falls between 41–55 dB. At this stage, normal speech becomes difficult to understand without raising the volume or positioning oneself closer to the speaker. Both consonant and vowel sounds may be missed, and communication in group settings often becomes tiring. People with moderate hearing loss can usually “hear” that someone is speaking but struggle to understand the words clearly. 

Moderately severe hearing loss 

Moderately severe hearing loss ranges from roughly 56–70 dB. Without hearing aids, spoken words are often inaudible. Even with amplification, listening can require focus and effort, especially in environments with background noise. Many people with this degree of loss rely on additional cues, such as lip-reading or captioning, to support understanding. 

Severe hearing loss 

Severe hearing loss occurs when sounds below 71–90 dB are difficult or impossible to detect. Everyday sounds, such as doorbells, telephones, or distant voices, may go unnoticed. Speech understanding without hearing aids is typically not possible, and even amplified sound may need to be paired with assistive listening technology or structured communication strategies. Evaluation by a Hearing Care Provider (HCP) is essential to determine whether powerful hearing aids or cochlear implants may help. 

Profound hearing loss 

Profound hearing loss means that even very loud sounds (91 dB and above) may not be heard. Speech cannot be understood without significant amplification or alternative communication methods. Cochlear implants or other specialized technologies are often recommended to support communication. A professional hearing assessment is crucial in determining the best path forward. 

When should you see a Hearing Care Provider (HCP)? 

Hearing changes can be gradual, making them easy to overlook. If you’re noticing muffled sounds, needing higher TV volume, difficulty following conversations, or persistent ringing in your ears, a hearing assessment can help determine what’s happening. Even if you are unsure of the cause, a Hearing Care Provider (HCP) can interpret your results, review your hearing history, and recommend appropriate support options. Early testing allows for earlier treatment—and better hearing outcomes. 

Key takeaways 

• Hearing loss varies widely in cause and severity. 

• Degrees of hearing loss help guide diagnosis and treatment. 

• Even mild hearing loss can affect communication. 

• Early hearing tests can identify issues before they worsen. 

• Hearing Care Providers (HCPs) can recommend solutions tailored to your needs. 

If you or someone you know is experiencing signs of hearing loss, we’re here to help. You can book a free hearing test or find a Connect Hearing clinic near you for personalized support.