An audiogram is a graphic representation of hearing that plots frequency by hearing level. A pure-tone threshold test measures the lowest level of sounds detected. The line connecting the thresholds across the pitch range reflects the hearing loss level in each ear. [diagram needs] The audiogram pictured is a visual representation of degrees of hearing loss where thresholds are:
| Decibel Level in dBHL | Description |
| -10 to 20 (or 25 | Normal Hearing |
| 20 (or 25) to 40 | Mild Hearing Loss |
| 40 to 55 | Moderate Hearing Loss |
| 55-70 | Moderately Severe Hearing Loss |
| 70-90 | Severe Hearing Loss |
| 90+ | Profound Hearing Loss |
This particular audiogram groups moderate and moderately severe hearing loss levels together. On this audiogram, the hearing loss level is normal (sloping) to severe.
