Reference sines, sweeps, and channel-identification files - 16-bit / 44.1 kHz WAV, 30 seconds, -6 dBFS. Rendered losslessly in your browser the moment you click, so every file is sample-exact. Free for any use.
30-second sines at -6 dBFS, the standard level for line-up tones.
Exponential sweeps with fade-in/out - the fastest full-range speaker check.
Stereo files for wiring checks - which speaker is which, and is polarity right.
For arbitrary frequencies, live adjustment, or listening rather than downloading, the interactive tools cover everything here and more: the tone generator plays and exports any frequency from 20 Hz to 20 kHz, the sweep generator runs configurable live sweeps, the noise pages export white, pink, brown, green, and gray noise WAVs, and the signal generator handles engineering waveforms.
All files are rendered at -6 dBFS peak (amplitude 0.5), the common line-up level - loud enough for clean measurement, with headroom to avoid any clipping in players or converters. 16-bit stereo-or-mono WAV at 44.1 kHz, 30 seconds each.
Because synthesis is lossless and instant: your browser renders the exact waveform sample-by-sample the moment you click, so there is nothing to compress, host, or trust. The file you get is mathematically identical to what any studio would render for the same spec.
It is the audio industry's reference point: aligning levels between devices (set the tone to read 0 VU / -18 dBFS on the destination), verifying signal chains pass audio cleanly, testing for distortion, and calibrating broadcast and PA systems. When someone says "send tone," they mean this.
Play the full-range sweep at moderate volume and listen for dropouts (frequencies that vanish), resonances (frequencies that boom), and rattles (buzzing from the cabinet or the room). The bass sweep does the same for the bottom octaves where room modes live - pair it with the room mode calculator to know what to listen for.
Yes - a sine wave is not copyrightable and these renders are free for any use, commercial included. If they save you time, a link back to tonal.fm is appreciated but never required.
Generate single tones with precise frequency control. Perfect for quick audio testing and tuning.
Play multiple frequencies simultaneously with independent volume and panning controls.
Create linear or exponential frequency sweeps for speaker testing and room acoustics analysis.
Generate binaural beats for meditation, focus, and relaxation. Requires headphones for proper effect.
Generate telephone dial pad tones (Dual Tone Multi Frequency). Interactive touch-tone dial pad.
Professional metronome with tap tempo, time signatures, subdivisions, and tempo trainer for musicians.
Tap along to any song to find its tempo in beats per minute. Includes tempo markings reference.
Hear major, minor, diminished, and seventh chords in every key. Block chords or arpeggios.
Hear classic progressions like I-V-vi-IV and 12-bar blues in any key at any tempo.
Free browser piano with 3 octaves, note names, and computer keyboard support.
Generate white, pink, and brown noise for sleep, focus, tinnitus relief, and speaker burn-in.
Reference tuning notes for guitar, bass, ukulele, violin, cello, and more at concert pitch (A440).
Test your subwoofer with a 60-second frequency sweep (150Hz-1Hz) and individual bass test tones.
Test your hearing range from 8kHz to 20kHz. Find your hearing age and compare with averages.
Ancient healing tones including 528Hz (DNA repair). For meditation, chakra activation, and spiritual healing.
Test stereo balance with panning control and left/right channel testing. Perfect for speaker setup.
Check speaker wiring polarity by comparing in-phase and out-of-phase test signals.
Measure your Bluetooth or system audio delay in milliseconds with a click-and-flash sync test.
Real-time frequency analysis of your microphone input with a live log-frequency display.
Measure approximate sound levels with your microphone - live dB with min/avg/max tracking.
Check your microphone in seconds: live waveform, level meter, and record-and-playback check.
Learn to recognize musical intervals by ear with quiz mode, score tracking, and song mnemonics.
Chromatic pitch pipe with all 12 notes across 3 octaves. Perfect for singers, choirs, and a cappella groups.
Experience the auditory illusion of an infinitely ascending or descending tone. Mind-bending psychoacoustic phenomenon.
Can you hear the mosquito tone? High-frequency test (15-20kHz) that only young people can hear. Find your hearing age!
Create relaxing ambient soundscapes with singing bowls, nature sounds, and binaural beats.
Push water out of a wet phone or watch speaker with a pulsed 165 Hz tone - the same method Apple Watch uses.
Adjustable high-frequency whistle (8-22 kHz) for dog training - clearly audible to dogs, silent to most adults.
Rhythmic pulsed tones across delta to gamma ranges. Stronger than binaural beats and works without headphones.
Name 12 random notes with no reference tone and find out if you have absolute pitch or great pitch memory.
Sing your lowest and highest notes and get your range plus voice type - bass to soprano. Mic-based, nothing uploaded.
Find the highest frequency you can hear (8-20 kHz) and see how old your ears test. Takes one minute.
Five-minute headphone checkup: channels, wiring polarity, bass and treble reach, and driver distortion.
Send noise to each 5.1 channel - fronts, center, surrounds, and subwoofer - and catch swapped or dead speakers.