The World Health Organization's safe-listening limit is 80 dB for up to 40 hours a week, shrinking to 4 hours a week at 90 dB; its simplest rule is to keep your device below 60% of maximum volume.
The article on noise-cancelling headphones covers that specific technology. This one is about something more universal: how loud, and for how long, ordinary earbuds and headphones become a hearing-health and tinnitus risk — regardless of what type you're using.
The scale of the risk, in one number
A systematic review and meta-analysis by Dillard and colleagues, published in BMJ Global Health in 2022 (pooling data from 33 studies covering over 19,000 people aged 12 to 34), estimated that between 0.67 and 1.35 billion young people worldwide could be at risk of hearing loss from unsafe listening practices — which is where the widely quoted "over 1 billion" comes from. The same analysis found unsafe listening habits are common among the teens and young adults studied: a pooled prevalence of roughly 24% from personal listening device use specifically, and an estimated 48% from attendance at loud entertainment venues. The venue figure is modelled rather than pooled: the pooled estimate for venues had limited certainty, so the authors fitted a model of sound intensity and exposure time to arrive at it.
What "unsafe" means in numbers
The World Health Organization's safe-listening guidance is built on a trade-off between level and time: the louder the sound, the shorter the time it can be listened to safely. At 80 dB, up to 40 hours a week is considered within safe limits. At 90 dB — a jump that doesn't sound dramatic but represents a large increase in sound energy — that safe window shrinks to just 4 hours per week.
WHO's table of safe listening time per week keeps shrinking from there:
- 85 dB — 12 hours 30 minutes
- 95 dB — 1 hour 15 minutes
- 100 dB — 20 minutes
- 105 dB — 8 minutes
- 110 dB — 2.5 minutes
Those upper rows are not hypothetical for earbud users. The Dillard review notes that people using personal listening devices commonly choose volumes as high as 105 dB — a level with an eight-minute weekly allowance. That is why "what feels like a normal listening volume" and "what's safe" are two different things for a lot of everyday earbud use.
Why this connects directly to tinnitus
Noise-induced hearing loss and tinnitus are closely linked mechanistically, and unsafe personal-device listening is simply a more modern, more individualized delivery mechanism for the same underlying kind of cochlear damage that's historically been discussed in the context of industrial noise or concerts. Tinnitus is a well-established, common consequence of the same hair-cell damage that causes noise-induced hearing loss, which makes headphone listening habits a directly relevant, and highly modifiable, everyday risk factor.
A practical volume rule
WHO's own advice is to keep the volume on your device below 60% of maximum, and to give your ears frequent breaks from loud sound so the sensory cells can recover. The popular "60/60 rule" packages that with a time limit — no more than 60 minutes at a stretch before a break — which is a sensible rule of thumb rather than a WHO figure. Neither is a precise decibel measurement, since device maximum volumes vary, but both are useful defaults when you don't have a way to measure output in the moment. WHO also points to apps, and the built-in features on some smartphones, that track your listening level for you.
What this means practically
- If you regularly listen at more than about 60% of max volume for long stretches, that's worth reconsidering — the WHO's own dB-based limits shrink fast as volume climbs
- Take real breaks — WHO's advice is to rest your ears frequently from loud sound, which a continuous multi-hour session does not allow
- Noise-cancelling technology can help here indirectly — WHO recommends well-fitted, noise-cancelling headphones precisely to reduce the need to raise the volume in noisy places
- New ringing, muffled hearing, or ear fullness after a long headphone session is the same kind of signal covered in tinnitus after a concert, which sets out how long a temporary threshold shift takes to clear — worth taking seriously, especially if it becomes a repeated pattern rather than a one-off