Binaural beats for sleep: what the research shows and how to try them

Do binaural beats help you sleep?

Maybe, for some people, in small studies. That is the honest summary. A 2023 systematic review of brain-oscillation studies by Heine and colleagues looked at trials with between 4 and 47 participants. Results were inconsistent, and the review did not establish that binaural beats reliably entrain the brain or improve sleep.

The Sleep Foundation reaches a similar view: evidence is limited, results vary, and more research is needed. That is a consumer summary, not a clinical guideline, so treat it as context.

What individual studies found

• Park et al., 2024: 10 healthy people took part in a crossover study with polysomnography over two nights. Dynamic binaural beats cut sleep latency compared with a sham or no-sound condition. It is a proof of concept, and it says nothing about lasting benefit or insomnia.
• Jirakittayakorn and Wongsawad, 2017: a 3 Hz track was reported to induce delta activity and lengthen stage three sleep. The sample size is unknown from the source summary, and EEG changes are not the same as feeling rested.
• Kim et al., 2020: adults aged 20 to 59 with subclinical insomnia symptoms used 6 Hz theta beats for 30 minutes before bed for two weeks. The abstract reports EEG measures but not enough to verify a meaningful sleep gain.
• Iranian trial, 2023: 24 adults with insomnia, with inconsistent group counts in the report. It reported a significant effect (F = 16.40, effect size 0.43), but recruitment was by convenience and the authors said results could not be generalized.

A 2026 review in young adults covered seven studies of stress, mood and sleep. Effects ranged from d = -0.47 to 0.59, from small unfavorable to small-to-moderate favorable. Certainty was rated low to moderate.

Delta, theta or something else?

There is no proven best frequency for sleep. The studies that touch sleep used delta (3 Hz in one study) or theta (6 Hz in another), and neither has been shown to beat the other. Delta binaural beats and deep sleep binaural beats are popular labels because delta is the band linked with slow-wave sleep, but a track named for a brainwave does not guarantee your brain follows it.

It is also unclear whether any effect comes from the beat itself or from relaxation, masking noise, expectation and the habit of a bedtime routine. That is my read of the gaps in the research, not a finding. For more background, see our page on what binaural beats are and what remains uncertain.

How to try them tonight

1. Pick a delta or theta track in the 1 to 6 Hz range. Binaural beats need stereo headphones, because each ear must hear a slightly different tone.
2. Set the volume low, just above a whisper. Loud audio can itself disturb sleep.
3. Start the track 20 to 30 minutes before you want to be asleep, in bed with the lights off.
4. Use comfortable headphones or a sleep headband, and set a timer so audio stops on its own.
5. Keep the rest of your routine fixed for two weeks: same bedtime, no screens in bed.
6. Note how long it takes to fall asleep and how you feel in the morning. If nothing changes, drop it.

If headphones bother you, try ambient audio instead, such as soundscapes for deep sleep. A body-based practice also has better evidence behind it; our piece on whether meditation helps sleep covers that.

Who should be careful

Binaural beats are not a replacement for cognitive behavioral therapy for insomnia or for medication your doctor prescribed. If you have had trouble sleeping for months, talk to a clinician. Stop if you get headaches, dizziness or rising anxiety from the audio. Researchers have not settled whether binaural beats are safe for people with seizure disorders, so ask a doctor first if that applies to you.

A short word on expectations

Treat them as a bedtime cue, not a cure. If they help you wind down, good. For racing thoughts, this guide to calming apps may fit better.