Handy tools
Binaural Beats
Binaural beats & isochronic tones for focus, relaxation and sleep — brainwave presets, ambient mix and a timer.
Play binaural beats right in your browser for sleep, study or a calm break: pick a brainwave preset, add rain or white noise, and set a timer. Each ear gets a slightly different tone, and your brain hears the gap between them as a slow, steady pulse. No app, no sign-up.
Mode
🎧 Binaural beats need stereo headphones — each ear hears a slightly different tone. Without headphones the effect disappears; try Isochronic instead.
Brainwave preset
Beat frequency · 10.0 Hz
Carrier tone · 200 Hz
Volume · 50%
Background sound
⚠️ For relaxation and entertainment only, not a medical treatment. Research on binaural and isochronic tones is mixed, so no effect on sleep, focus or mood is guaranteed. If you have epilepsy or a history of seizures, check with a doctor first. Keep the volume low, and don't listen while driving or doing anything that needs your full attention.
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Free online binaural beats player for sleep, study, focus and relaxation. Choose a brainwave preset from delta (2.5 Hz) to gamma (40 Hz), or set your own beat between 0.5 and 40 Hz on a 50–500 Hz carrier tone. With headphones, each ear gets its own tone and your brain hears the difference as a slow pulse; on speakers, switch to isochronic mode, which pulses a single tone on and off. Mix in rain, waves or white noise, set a sleep timer that fades out, or run focus and break intervals such as 25/5 Pomodoro. Runs in the browser with no app or sign-up. Research on binaural beats is mixed, so treat it as relaxing background sound rather than a treatment.
Frequently Asked Questions
Q. What are binaural beats?
A. A binaural beat is a pulse your brain perceives when each ear hears a slightly different tone. Its rate equals the difference between the two frequencies: 200 Hz in the left ear and 210 Hz in the right produces a 10 Hz beat. The pulse isn't in the sound itself; it arises as the brain combines the two signals.
Q. Do I need headphones for binaural beats?
A. Yes. Binaural beats need stereo headphones or earbuds, because each ear must receive only its own tone. Through speakers the two tones mix in the room before they reach you. If you don't have headphones, use isochronic mode, which switches a single tone on and off at a steady rate and works on speakers.
Q. Which frequency should I use for sleep or focus?
A. The presets follow the standard EEG brainwave bands: delta (0.5–4 Hz) is linked to deep sleep, theta (4–8 Hz) to drowsiness and meditation, alpha (8–12 Hz) to relaxed wakefulness, beta (13–30 Hz) to active concentration, and gamma sits above 30 Hz. Here, Sleep plays 2.5 Hz, Meditation 6 Hz, Relax 10 Hz, Study 14 Hz (SMR), Focus 16 Hz and Alert 40 Hz. The bands describe brain states; listening doesn't guarantee you'll reach them.
Q. Do binaural beats actually work?
A. The evidence is mixed. Some small studies report short-term changes in mood or attention, but a 2023 systematic review found inconsistent evidence that binaural beats change brainwave activity. They are not a treatment for insomnia, ADHD or anxiety, so use them as background sound, and if you have epilepsy, ask a doctor before listening to pulsing tones.