Loud is not just a taste question — it is a hearing question. Enter the level you actually listen at and see roughly how long that is safe for per day, using NIOSH's recommended exposure limit, the standard most consumer hearing-health guidance is built on.
NIOSH's Recommended Exposure Limit treats 85 dB as safe for 8 hours, with a 3 dB exchange rate — every 3 dB louder halves the safe duration, because a 3 dB rise doubles the actual sound energy hitting your ears. OSHA's legal workplace limit is less conservative: 90 dB for 8 hours with a 5 dB exchange rate. Neither figure was written with headphones in mind, but the physics of hearing damage does not care what is making the noise.
Three things this number is not. It is not a per-session figure: it is the total for a whole day, covering every source of noise you are exposed to in those 24 hours. It is not a guarantee — NIOSH is explicit that even at the recommended limit, around 8% of people exposed over a working lifetime still develop material hearing impairment. And it is not personal: susceptibility varies considerably between individuals, and this calculator knows nothing about yours.
It is also an occupational standard borrowed for a domestic purpose. NIOSH wrote it for factory floors, where exposure is measured with a meter at the ear over a full shift. Your own listening level is almost certainly an estimate, and an estimate that is 5 dB optimistic makes the real allowance three times shorter than what this page shows you.
This is a general-awareness tool, not a medical device. If you are worried about your hearing, a hearing health professional is the right next step — not a website.