How loud is a marching band?
Inside a marching band, players are exposed to roughly 91 to 112 dBA during performances. A dosimeter on a university trumpet player logged 91.2 to 112.3 dBA across football game shows, and NIOSH measured indoor high school marching band rehearsals reaching 110 dBA.
- Level
- 91.2–112.3 dBAA-weighted sound level
- Daily limit
- 52 s a dayNIOSH, at the loud end
- Versus conversation
- 8,414× energyabout 15.2× as loud
What the numbers mean
How it was measured. Range of 3.75-minute LAeq blocks from a dosimeter worn by a university marching band trumpet player across two football game performances; NIOSH found indoor high school rehearsal levels reaching 110 dBA.
Players stand close together in a block formation, so each musician hears their neighbours' instruments as much as their own. In a US university study, every one of six band members exceeded the NIOSH daily noise dose in each rehearsal and game, and the trumpet player received 5252% of the daily dose in one performance.
The band director, standing about 25 m away on a platform during rehearsals, stayed under the limit, but at games he was less than 5 m away and exceeded it. Audience members 30 to 40 m from the band were not exposed to hazardous levels.
Indoors it gets worse. A NIOSH health hazard evaluation at an Alabama high school found that marching band rehearsal produced the highest exposures, reaching 110 dBA, and recommended musician earplugs and rehearsing outdoors or in larger rooms.
How long is safe?
NIOSH recommends no more than 52 s a day at 112.3 dBA (1 h 55 min at 91.2). OSHA's legal limit is 22 min.
| Level | NIOSH limit (85 dBA, 3 dB rule) | OSHA limit (90 dBA, 5 dB rule) | UK/EU 80 dB(A) action value reached after | UK/EU 85 dB(A) action value reached after |
|---|---|---|---|---|
| 91.2 dBA | 1 h 55 min | 6 h 46 min | 36 min | 1 h 55 min |
| 112.3 dBA | 52 s | 22 min | 17 s | 54 s |
Times are for a whole day’s exposure, with the rest of the day quiet. The workplace limits were written for adults at work, not for children. Work out a mixed day with the noise dose calculator.
Protecting your hearing
Band members should wear musician's earplugs at rehearsals and games. Rehearse outdoors or in a large room rather than a small band room, and spread players out where the music allows.
Earplug and earmuff ratings (NRR in the US, SNR in the UK and EU) are lab figures; real-world protection is usually lower. How to read the ratings.
Compared with sounds nearby
Using midpoints of each range. Energy multiplies by 10 every 10 dB; perceived loudness roughly doubles (why).
- Music festival (95.8–101.4 dBA): this has about 2.1× its sound energy and sounds about 1.2× as loud.
- Circular saw (89–110.4 dBA): this has about 1.6× its sound energy and sounds about 1.2× as loud.
- Rock concert (99.8–108 dBA): it has about 1.6× the sound energy of this and sounds about 1.2× as loud.
- Live band in a pub (103–105 dBA): it has about 1.7× the sound energy of this and sounds about 1.2× as loud.
- Normal conversation (55–70 dBA): this has about 8,414× its energy and sounds about 15.2× as loud.
Questions
Is the audience at risk from a marching band?
In the university study, audience members 30 to 40 m away were not exposed to hazardous levels; the players were.
Are indoor band rehearsals louder?
NIOSH found indoor high school marching band rehearsal produced exposures reaching 110 dBA.
Sources
- University Marching Band Members' Noise Dosages and Hearing Health-Related Knowledge, International Journal of Environmental Research and Public Health (2021). Supports: 91.2-112.3 dBA LAeq blocks, trumpet.
Trumpet 3588.4 100.54 94.0–111.0 5252.1 102.20 91.2–112.3
Checked 2026-11-02. - University Marching Band Members' Noise Dosages and Hearing Health-Related Knowledge, International Journal of Environmental Research and Public Health (2021). Supports: audience distance.
the distance between the marching band and the audience members during the performances was approximately 30 to 40 m
Checked 2026-11-02. - Noise Evaluation of Elementary and High School Music Classes and Indoor Marching Band Rehearsals - Alabama (HETA 2011-0129-3160), NIOSH / CDC (2012). Supports: 110 dBA indoor rehearsal.
The highest noise exposure reached 110 decibels, A-scale.
Checked 2026-11-02.
This page is general information, not medical advice. If you have ringing in your ears, muffled hearing or any change in your hearing, see an audiologist or your doctor.