Level and time
Small increases in dB can sharply reduce recommended exposure time because decibels are logarithmic.
Hearing safety
Noise exposure calculator
Estimate daily sound dose from decibel level and exposure time using a common 3 dB exchange-rate model. Use it for education and planning, not legal compliance.
Practical context
Compare noisy rooms, concerts, tools, commute sound, and headphone listening habits.
Important limit
For workplace or medical decisions, use certified monitoring equipment and applicable local standards.