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About this tool
See how long headphone listening is considered safe at a given decibel level using the WHO-ITU 80 dB for 40 hours weekly sound allowance.
A safe listening allowance is the amount of sound energy your ears can take in a week before the risk of noise-induced hearing loss starts to climb, and the WHO-ITU standard for safe listening devices (Recommendation ITU-T H.870) sets it at 80 dB(A) sustained for 40 hours a week for adults, or 75 dB(A) for 40 hours for children and sensitive listeners. Because sound energy doubles for every 3 dB rise, the permitted time halves every 3 dB — so this guide converts any listening level into the hours it buys you, shows how much of the weekly allowance your current habit uses, and names the highest level that habit could sit at. It is informational and is not a hearing test.
Open Safe Listening Volume Guide on AltFTool — it loads instantly in your browser.
Enter the values you already know.
Fine-tune the options to match your scenario.
Read the result and use it in your planning or reporting.
Uses the WHO-ITU H.870 weekly sound allowance and its 3 dB exchange rate.
Switches between the 80 dB(A) adult dose and the 75 dB(A) dose for children and sensitive listeners.
Shows time allowed at your level and the level allowed at your listening time.
It depends entirely on the level. The WHO-ITU allowance of 80 dB(A) for 40 hours a week works out to roughly 5.7 hours a day, but at 89 dB(A) that drops to about 5 hours a week and at 100 dB(A) to roughly 24 minutes a week, because every 3 dB halves the permitted time.
Around 80 dB(A) or below is the adult reference in ITU-T H.870, and 75 dB(A) for children. Above 85 dB(A) the safe duration falls below about 12.5 hours a week, and levels near the maximum output of many phones (roughly 94 to 105 dB(A)) allow only minutes.
It is a reasonable rule of thumb, not a standard. Listening at 60% of device volume for 60 minutes a day keeps most people well inside the weekly allowance on typical hardware, but 60% means different decibel levels on different phone and headphone combinations, so a measured dB(A) figure is more reliable.
Indirectly, yes. Active noise cancellation lowers the background noise you are competing with, so you tend to set a lower volume to hear detail — often several decibels lower on a train or a flight, which meaningfully extends the safe duration. The cancellation itself does not reduce the level of your own audio.
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