MentaFlowBinaural Beats Generator
Generate any beat from 1–30 Hz, right in your browser. Free, no signup.
Headphones required — the effect needs one frequency per ear.
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How do binaural beats work?
Each ear receives a slightly different tone — for example 220 Hz on the left and 230 Hz on the right. Your brain perceives the 10 Hz difference as a gentle pulse, the “beat.” That is why headphones are required: through speakers the two tones mix in the air and the effect disappears.
What do the Delta, Theta, Alpha, and Beta bands mean?
The band names come from EEG research on brainwave frequencies: Delta (1–4 Hz) dominates deep sleep, Theta (4–8 Hz) appears in drowsiness and meditation, Alpha (8–13 Hz) in relaxed wakefulness, and Beta (13–30 Hz) in alert, engaged thinking. People typically choose a beat frequency in the band matching the state they want to settle into.
Tips for a good session
Keep the volume low — the tone should sit in the background, not demand attention. Give it 5–10 minutes rather than expecting an instant shift, and experiment with the carrier tone until it feels comfortable; the beat frequency, not the carrier, sets the character of the session.