Online Tone Generator: Any Frequency From 1 Hz to 22 kHz, With WAV Download
RingtoneGenerator plays any frequency from 1 Hz to 22 kHz in your browser, free to try: an online tone generator with sine, square, triangle and sawtooth waves. Type a value to 0.01 Hz or use the log slider and 0.1 Hz nudges, sweep a range, dial DTMF phone tones and download a WAV of 1 to 30 seconds. It runs on phones and computers. It is free with no sign-in, and nothing is recorded or uploaded.
- Free, no sign-in or upload
- 1 Hz to 22 kHz, 4 waveforms
- Sweeps and a DTMF keypad
- WAV download, 1 to 30 s
440 Hz · Sine
A4 +0¢
Start low. Steady test tones can sound louder than music, so turn up slowly and stop if anything feels uncomfortable.
- SpacePlay / stop
- ←→±1 Hz
- Shift←→±0.1 Hz
- []Octave down / up
- ↑↓Volume
- EscStop
Logarithmic sweeps spend equal time on every octave, which matches how we hear; linear sweeps rush through the bass. The sweep uses the waveform and balance from the Tone tab.
Press and hold a key, or type 0 to 9, *, # and A to D on your keyboard.
Each key plays for 120 ms with an 80 ms gap; a comma adds a half-second pause. The A to D keys exist on the standard keypad but not on most phones.
| Hz | 1209 | 1336 | 1477 | 1633 |
|---|---|---|---|---|
| 697 | 1 | 2 | 3 | A |
| 770 | 4 | 5 | 6 | B |
| 852 | 7 | 8 | 9 | C |
| 941 | * | 0 | # | D |
Download WAV
The current tone as a 16-bit stereo WAV (48 kHz), with your waveform and balance. 1 to 30 seconds.
Good to know
- The highest tone your device can make is half its sample rate, so the generator stops at 22 kHz.
- Many speakers can't play below about 50 to 100 Hz or above about 16 to 18 kHz, even when the generator makes the tone.
- WAV files are rendered in your browser at -3 dBFS (sine peak) with 10 ms fades; the volume slider only affects playback.
- This checks what your own device plays. It can't measure loudness in decibels or calibrate speakers.
- Every sound is generated in your browser. Nothing is recorded or uploaded, and there is no sign-in.
- Browsers only allow sound after you tap or press a key, so nothing plays until you press a button.
What Is a Tone Generator?
A tone generator makes a steady sound at one exact pitch, measured in hertz (Hz), the number of waves per second. 440 Hz is the A that orchestras tune to, 1 kHz is the classic test tone, and the top of young hearing sits near 20 kHz. RingtoneGenerator builds every tone live in your browser, so you can tune an instrument, check a speaker, match a hum or make a beep sound for a video. The same page works as a frequency generator for sweeps and as a dialer for phone keypad tones, with a live picture of the wave you are playing.
Play a ToneWhy Use This Online Tone Generator
Precise numbers, four waveforms, sweeps, phone tones and a file you can keep, all in one frequency generator.
Exact to 0.01 Hz
Type a value, drag the log slider or nudge by 1 Hz or 0.1 Hz. Octave buttons halve or double the pitch, and the note name updates live.
Four waveforms
Sine for a pure test tone, plus square, triangle and sawtooth for richer sounds, all switchable while the tone plays.
Sweeps
Glide between any two frequencies over 1 to 600 seconds, on a log or linear scale, once or up and down.
DTMF keypad
All 16 phone keys with their two tones and the frequency table, plus a dialer that plays a whole number.
Download WAV
Save the tone, the sweep or the dialed number as a 16-bit, 48 kHz stereo WAV of up to 30 seconds.
Free and private
No sign-in and no upload. Your last settings stay in your browser, and Copy link shares an exact frequency.
How to Use the Tone Generator in 3 Steps
From a blank page to a playing tone in under ten seconds.
- 1
Set the frequency
Type a number in hertz, drag the slider or tap a preset such as 440 Hz · A4 or 1 kHz test tone.
- 2
Pick a waveform and play
Choose Sine, Square, Triangle or Sawtooth and press play or Space. The volume starts at 30%, so raise it slowly.
- 3
Adjust, share or save
Nudge the pitch with the arrow keys, set a Stop after timer, press Copy link, or press Download WAV to keep the sound.
Tone Generator Features in Detail
Everything a frequency generator needs for music, science, audio checks and video work.
A Sine Wave Generator, Plus Square, Triangle and Sawtooth
Sine is the pure tone: one frequency and nothing else, which is why a sine wave generator is the tool for tuning, hearing checks and speaker work. The other three add harmonics, whole-number multiples of the base pitch. Square and triangle use only the odd ones (3, 5 and 7 times the frequency), square strongly and triangle softly, while sawtooth has every harmonic and sounds bright and buzzy. Switch the waveform while the tone plays and watch the live picture change: the Wave view shows the shape and the Spectrum view shows the harmonics.
Try the WaveformsExact Frequency on a Log Slider, Down to 0.01 Hz
The slider is logarithmic, so 1 to 10 Hz, 10 to 100 Hz, 100 Hz to 1 kHz and 1 to 10 kHz each get the same room, just as your ear hears pitch. For exact work, type the number, use the -1, -0.1, +0.1 and +1 buttons, or press the left and right arrow keys (hold Shift for 0.1 Hz). The ×½ and ×2 buttons, or the [ and ] keys, jump an octave. A chip shows the nearest note and how many cents sharp or flat it is, so 261.63 Hz reads C4. Copy link puts the frequency and waveform in a URL you can send, so anyone can open the same Hz sound.
Set a FrequencySweep Mode: Start, End, Length, Log or Linear
A sweep glides from one frequency to another, which turns this into a sound frequency generator for finding where a speaker fades out or a room rings. Set Start and End anywhere from 1 Hz to 22 kHz and a Length of 1 to 600 seconds, then pick Logarithmic, which spends equal time on every octave, or Linear, which rushes through the bass. Repeat once, or choose Up and down to keep it going. Range buttons load 20 Hz to 20 kHz, 20 to 200 Hz or 8 to 20 kHz in one tap, and a live readout tracks the frequency as it moves.
Run a SweepDTMF Keypad With the Full Frequency Table
Every key on a phone keypad plays two tones at once: a low one for its row (697, 770, 852 or 941 Hz) and a high one for its column (1209, 1336, 1477 or 1633 Hz). The DTMF keypad tab has all 16 keys, including A to D, which are in the standard but missing from most phones. Press and hold a key, or type digits on your keyboard, and the table lights up the pair that is playing. Type a number into Dial a sequence and press Dial: each key plays for 120 ms with an 80 ms gap, and a comma adds half a second of pause.
Open the KeypadDownload a WAV Test Tone or Beep Sound
Press Download WAV to save what you set up as a 16-bit stereo WAV at 48 kHz. On the Tone tab, pick a Length of 1 to 30 seconds; a sweep saves at its own length, up to 30 seconds; the DTMF tab saves the dialed number. Files are rendered with 10 ms fades, a sine peaks at -3 dBFS, and each file is named after its settings, such as tone-1000hz-sine-1s.wav, ready for a video editor, a sampler or a phone. The volume slider changes only what you hear, never the file.
Download a ToneTone Generator Preview: Waveforms and Harmonics
Pick a waveform and a frequency to see two cycles of the wave, its harmonics and the size of the WAV. This preview is silent; the tone generator above plays the sound.
A 48 kHz file can only hold frequencies up to 24 kHz, so harmonics above that are left out. A 10 kHz square wave keeps just its base tone and sounds almost exactly like a sine, while a 100 Hz square wave keeps more than a hundred harmonics.
Test Tone Presets and What They Are For
Each one is a single tap in the generator above.
440 Hz · A4
The tuning A for orchestras and most instruments. Middle C, at 261.63 Hz, sits right next to it.
1 kHz test tone
The standard reference test tone for audio levels and line checks. Set a comfortable volume here before going higher or lower.
50 Hz and 60 Hz hum
The mains frequency in most of the world (50 Hz) and in North America (60 Hz), handy for matching an electrical hum.
Censor beep
A 1 kHz beep sound for exactly one second, the classic bleep over a bad word on TV.
Online Tone Generator Options Compared
How this tone generator stacks up against the usual alternatives. None of them can play past what your speaker allows.
| Online Tone Generator Options Compared | RingtoneGenerator tone generator | Basic online generators | Phone apps | Hardware signal generator |
|---|---|---|---|---|
| Free, no sign-in | Often with ads | |||
| Range | 1 Hz to 22 kHz | Often 20 Hz to 20 kHz | Varies | Often far past 20 kHz |
| Sine, square, triangle, sawtooth | Some | |||
| Log or linear sweep | Separate page | Some apps | ||
| DTMF keypad and dialer | Separate page | Some apps | ||
| WAV download | 1 to 30 s, 16-bit, 48 kHz | Some | Some apps | |
| Calibrated output level |
What People Use a Frequency Generator For
A clean tone at a known pitch is useful in more places than you might think. Keep the volume moderate, especially with headphones.
Tuning and ear training
Play 440 Hz or any note to tune a guitar, violin or choir, or train your ear to hear pitch steps as small as 1 Hz.
Speakers and subwoofers
Use it as a bass tone generator from 1 Hz up, or sweep the full range. The bass test adds a lowest tone finder.
Science class
Let students hear what 20 Hz and 15 kHz sound like, find the note that makes a wine glass ring, or show that each octave doubles the frequency.
Video and podcast editing
Download a free beep sound to bleep a word, a 1 kHz test tone for a level check, or a phone beep sound effect from the keypad.
Phone systems
Play DTMF digits to try a phone menu, an intercom or a radio that listens for touch tones.
Matching a ringing sound
Find a tone close to a ringing in your ears to describe it to a doctor. It is not a medical test; the mosquito tone page has a rough ear age check.
Tone Generator FAQ
Quick answers about frequencies, waveforms, DTMF and downloads.
What is a tone generator?
A tone generator plays a steady sound at a frequency you choose. This online tone generator runs in your browser, covers 1 Hz to 22 kHz in four waveforms, and also sweeps, dials DTMF tones and saves WAV files, free with no sign-in.
How do I play a specific frequency like 432 Hz?
Type 432 in the frequency box, press Enter, then press play. You can also drag the slider and fine-tune with the arrow keys: 1 Hz per press, or 0.1 Hz with Shift. Any Hz sound from 1 Hz to 22,000 Hz works, set to 0.01 Hz.
What is the highest frequency it can play?
22,000 Hz on almost every device. A digital tone cannot go above half the sample rate, and 44.1 and 48 kHz devices both allow 22 kHz, so the tone generator stops there. Whether you hear it depends on your speakers and your age; many speakers fade out near 16 to 18 kHz. For 15 to 22 kHz with pulse patterns, open the dog whistle.
What is the lowest frequency?
1 Hz. You cannot hear much below 20 Hz and most speakers fade out somewhere between 20 and 100 Hz, but the live picture still shows the wave. For speaker bass, the bass test is easier.
What is the difference between sine, square, triangle and sawtooth?
Sine is a single pure frequency. Square and triangle add odd harmonics, so they sound hollow; square is strong and buzzy, triangle soft. Sawtooth adds every harmonic and sounds brightest. Use sine for tests and tuning.
What is a DTMF tone?
DTMF, short for dual-tone multi-frequency, is the sound a phone keypad makes: each key plays one low and one high tone together, such as 770 Hz and 1336 Hz for the 5. Phone menus decode the pair to know which key you pressed. The DTMF keypad tab plays all 16 keys and shows the table.
Where can I get a telephone beep sound effect?
Make it here. Dial digits on the DTMF keypad for the classic phone beep sound effect, or tap the Censor beep preset, then press Download WAV. It is a pure tone made in your browser, not a recording, so the file is yours to use.
Can I get a free beep sound effect download?
Yes, as a WAV. Tap Censor beep (1 kHz, 1 s) or set any frequency, choose a Length of 1 to 30 seconds and press Download WAV. There is no sign-in, no watermark and no limit.
Is the WAV the same as what I hear?
It is the same tone, rendered in your browser as a 16-bit stereo WAV at 48 kHz with your waveform and balance, 10 ms fades and a sine peak at -3 dBFS. Only the volume slider is left out, so the file level does not depend on your playback volume.
How do I make a frequency sweep?
Open the Sweep tab, set Start, End and Length, pick Logarithmic or Linear and press Start sweep. Choose Up and down to keep it going. Sweeps of up to 30 seconds can be saved with Download WAV.
Can I play a tone in one ear only?
Yes. Drag Balance all the way to L or R and the tone plays in that channel only. The left right sound test checks that your channels are not swapped.
Can the tone stop on its own?
Yes. Set Stop after to 10 s, 30 s, 1 min, 5 min or 10 min and the tone stops by itself, with a countdown next to the play button.
Can a tone generator hurt my ears or speakers?
It can at high volume. Steady tones sound louder than music, and very high or very low tones are easy to overdo because they seem quiet. Start at the default 30%, set a comfortable level on the 1 kHz test tone and stay near it.
Does it work on iPhone and Android?
Yes, in Safari, Chrome and other modern browsers on phones, tablets and computers. On iPhone, sound starts after your first tap; if you still hear nothing, check the volume buttons and the output device.
Is this online tone generator free?
Yes. It is free with no sign-in and no limits, and nothing is recorded or uploaded. Your last frequency, waveform and balance are kept in your browser for next time.
More Tools Like This Tone Generator
Test tones made for one job each, plus the device checks.
Turn a Tone Into a Ringtone or Alert
Saved a beep or a chime? Trim it, set it as an alert or make it louder. Songs go through the ringtone maker on our home page.
Play Any Frequency With the Tone Generator
Set a frequency from 1 Hz to 22 kHz, pick a waveform and press play, or sweep a range, dial DTMF tones and download a WAV. This online tone generator is free, needs no sign-in and runs entirely in your browser.