Free Guide to Understanding Your Audiogram Results

What an Audiogram Is and Why You Received One

An audiogram is a graph that shows the results of a hearing test. A hearing professional uses special equipment in a soundproof booth to measure how well you can hear different sounds. The test itself is painless and non-invasive—you simply sit in a quiet room and raise your hand or press a button when you hear beeping sounds at different pitches and volumes.

The audiogram charts your hearing across two main dimensions: frequency (measured in Hertz, or Hz) and loudness (measured in decibels, or dB). Frequency refers to how high or low a sound is. A bird chirping is high frequency; thunder is low frequency. Loudness measures how intense or quiet a sound is. Normal conversation happens at about 60 decibels, while a whisper is around 30 decibels and a rock concert is about 110 decibels.

You may have received an audiogram for several reasons. Your primary care doctor might have referred you if you mentioned difficulty hearing during conversations. You could have had a routine hearing screening at work, as some employers conduct annual hearing tests for employees in noisy environments. Insurance companies sometimes require baseline audiograms before approving hearing aid coverage. Or you might have scheduled a test on your own because you noticed changes in your hearing.

The hearing test industry in the United States serves millions of people annually. According to the National Institute on Deafness and Other Communication Disorders, about 1 in 4 adults aged 20 to 69 have hearing loss that affects their ability to understand speech. Yet many people don't realize they have hearing loss until they take a test.

Understanding your audiogram helps you recognize patterns in your hearing. This knowledge allows you to make informed decisions about next steps, whether that means lifestyle adjustments, protective measures, or consultation with a hearing healthcare professional. The audiogram itself is simply a measurement tool—it documents what your ears can and cannot hear at different sound levels and pitches.

Practical Takeaway: Before reviewing your results, remember that an audiogram is a snapshot of your hearing on one particular day. If you were tired, anxious, or had congestion, this might have affected results slightly. Some people find it helpful to request a second test weeks later for comparison.

Reading the Graph: Axes, Symbols, and What They Mean

An audiogram looks like a standard graph with two axes. The horizontal axis (left to right) shows frequency, typically ranging from 125 Hz on the left to 8000 Hz on the right. These frequencies represent the full range of human speech and environmental sounds. The vertical axis (top to bottom) shows loudness in decibels, usually ranging from 0 dB at the top (softest sounds) to 120 dB at the bottom (loudest sounds).

The grid itself contains important reference information. Lines crossing the graph show standard frequencies and decibel levels. Your actual hearing results are plotted as points on this grid using specific symbols. The most common symbols are an X for the left ear and an O for the right ear. These symbols may be connected by lines to show the pattern of hearing across frequencies. Some audiograms use different colors—for example, red for one ear and blue for the other—to make the distinction clearer.

The position of each symbol tells you important information. A symbol appearing near the top of the graph (around 0-20 dB) means you heard that frequency at a very quiet volume—your hearing is quite good at that pitch. A symbol appearing lower on the graph means you needed a louder sound to hear that frequency. A symbol near the bottom (around 90-120 dB) means you only heard that frequency when it was very loud, indicating significant hearing loss at that pitch.

Many audiograms include shaded regions that show "normal hearing range." This zone typically spans from 0 to 20 dB across all frequencies. If your results fall entirely within this shaded area, your hearing test shows results within normal limits. If some symbols fall below this shaded area, those frequencies represent levels where your hearing is below typical ranges.

The right side of many audiograms includes a legend or key explaining what each symbol represents. Some audiograms add additional symbols or notations for special tests. For instance, a diagonal line with small marks might represent bone conduction testing, which measures how well sound travels through the skull directly to the inner ear, versus air conduction testing, which measures sound traveling through the ear canal.

Practical Takeaway: When you first look at your audiogram, start by locating the shaded normal hearing area. Then look at where your ear symbols fall relative to this zone. If they're mostly above it, your hearing is typical. If they dip significantly below, this shows where hearing loss is occurring.

Understanding Frequency Loss Patterns: Where You Hear Less

Hearing loss rarely affects all frequencies equally. The pattern of loss across different pitches can indicate what type of hearing loss you have and what might be causing it. By examining which frequencies show the most loss, you gain insight into which everyday sounds may be hardest for you to detect.

High-frequency hearing loss is one of the most common patterns. This means the symbols on the right side of your audiogram (representing higher pitches like 4000 Hz, 6000 Hz, 8000 Hz) drop lower on the graph than symbols on the left side. People with high-frequency loss often struggle to hear consonant sounds like S, T, F, and Z in speech. They might say they can hear someone talking but can't make out the words clearly, especially in noisy environments. High-frequency loss commonly results from age-related changes in the inner ear, noise exposure from occupational or recreational activities, or certain medications.

Low-frequency hearing loss shows the opposite pattern: symbols on the left side of the audiogram are lower than those on the right. This means you have more difficulty hearing lower-pitched sounds like the rumble of traffic, male voices, or bass notes in music. Low-frequency loss is less common than high-frequency loss but can result from conditions like Meniere's disease, certain types of ear trauma, or fluid in the middle ear.

Flat hearing loss means the line across your audiogram is relatively horizontal—you have similar amounts of hearing loss at all frequencies. This pattern often suggests sensorineural hearing loss related to inner ear function. It might result from genetics, medication side effects, viral infections, or other systemic conditions.

A "notch" or dip in the middle frequencies (particularly around 3000-6000 Hz) while hearing at other frequencies remains better is sometimes called a noise notch. This distinctive pattern frequently appears in people exposed to occupational noise or who have attended many loud concerts. The specific frequencies affected can sometimes correspond to the frequencies of the noise source someone was exposed to.

Understanding your pattern helps explain which sounds in daily life might be challenging. If you have high-frequency loss, you might mishear words that sound similar when consonants are affected. If you have low-frequency loss, you might miss the sounds of appliances running or find it difficult to hear when someone is knocking on the door.

Practical Takeaway: Look at your audiogram line from left to right. Does it stay relatively flat, dip on one side, or show a distinctive pattern? Describing this pattern to a hearing healthcare professional helps them understand your specific situation and discuss what types of sounds may be most challenging for you.

Decibel Levels and What They Mean for Hearing Loss Severity

The decibel scale on your audiogram's vertical axis measures how loud a sound needs to be before you can hear it. Understanding these numbers helps you grasp the severity of hearing loss shown in your results. The scale is logarithmic, not linear, which means the difference between 20 dB and 30 dB is not the same as the difference between 80 dB and 90 dB. A 10 dB increase represents roughly a doubling of loudness to the human ear.

Results in the 0-20 dB range are considered normal hearing. Most people without hearing loss show results in this zone. At 25-40 dB, results typically fall into the mild hearing loss category. A person with mild loss can usually understand normal conversation in quiet environments but may struggle in noisy settings or when someone speaks quietly. They might notice they need to turn up the television volume slightly higher than others prefer.

Moderate hearing loss typically ranges from 41-55