Teeth grinding at night: an overnight check by sound
The tool listens through the night on your device’s microphone and marks moments that look like teeth grinding: broadband noise around 2–8 kilohertz lasting half a second or more. A short recording is saved for every episode found, so in the morning you are not reading someone else’s verdict — you press play and decide. It also shows how the episodes were distributed across the hours of the night.
How to check yourself in one night
Put the device on charge 30–60 cm from the pillow, microphone facing the bed.
Press “Start the night” and allow microphone access.
Lie still for six seconds while your room background is measured — then go to sleep.
In the morning press “Finish” — a list of episodes with recordings and an hourly breakdown appears.
Play a few recordings and mark which of them really is grinding.
Find out whether you grind your teeth — and hear it yourself
What this tool will NOT find
A microphone only hears grinding — teeth rubbing against each other. Clenching, where the jaws press hard without moving, is silent, and that is roughly half of sleep bruxism. So “nothing found” here means “no sound found”, not “everything is fine”. If your temples and jaw ache in the morning, your teeth are sensitive and you can see chips in the enamel, see a dentist regardless of what this page showed.
How to set up
- Put your phone or laptop on the nightstand 30–60 cm from the pillow, screen down. Further away and the microphone will not hear; closer and it picks up your breathing.
- Plug the device in: a night of recording drains the battery.
- Do not close the tab or lock the screen by hand — with the screen asleep the browser may stop the microphone.
Higher sensitivity means more candidates, and more of them will be bedsheets and the fan. Start with normal.
You can sleep now. Press this button in the morning and a list with recordings appears.
This browser will not record sound in fragments, so listening back is not possible — only the time and duration of each episode will remain.
The room is fairly noisy. There will be more candidates than usual and some of them are not you — which makes listening to the recordings all the more important.
The tool listens through the night and marks moments that look like grinding: broadband noise in the upper frequencies lasting half a second or more. It saves a recording of every episode it finds — in the morning you play it back and decide for yourself whether that was your grinding or a neighbor moving a chair.
Allow microphone access in the browser prompt. Sound is what the tool listens to — without it there is nothing to do.
Listening to your room
Six seconds to learn your background: fridge, fan, street. Without this measurement the threshold would be identical for a house in the country and a flat on a main road. Lie still.
Level in the upper frequencies — where grinding lives:
What happened last night
No sounds resembling grinding were found. That does NOT mean there is no bruxism: clenching is silent, and quiet grinding may not have reached the microphone. If your jaw aches in the morning, the question for your dentist still stands.
Play a recording and listen. Grinding is unmistakable — a dry scraping sound like nothing else. Mark each as “that is grinding” or “not it” to get an honest total.
Sound recordings are kept only while the tab is open — after a reload the times and durations remain but the audio is gone.
Several nights in a row
This is a home acoustic measurement, not a diagnosis. Bruxism is diagnosed by a clinician, and the gold standard is a sleep study with muscle-activity sensors; sound gives only part of the picture. The value of this page is different: it turns “I think I grind my teeth” into recordings you can play and show.
