A simple recording studio in your browser. Record a part, then play along to it on the next track, up to 8 tracks, with a metronome, count-in and latency compensation so overdubs line up. Balance the tracks with volume, pan, mute and solo, import backing tracks, and download the mixdown as WAV or MP3. Nothing is uploaded.
Last updated:
0:00.0Bar 1 · Beat 1
Input
Arm a track (the red dot), press Record and play along. Wear headphones so the other tracks and the click are not recorded again.
4 tracks
No audio yet. Record your first part, import audio files onto tracks, or
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How to use the Multitrack Audio Recorder
Set the tempo and time signature, and keep Metronome on if you want a click to play to. Plug in headphones.
Arm a track with its red dot (Track 1 is armed at the start) and choose your input if you have more than one.
Press Record, allow the microphone, and play after the count-in. Press Stop recording (or R) when you finish.
Record the next part: the next empty track is armed automatically and the earlier tracks play back while you record.
Mix with each track's volume, pan, mute and solo, then choose WAV or MP3 and press Download mixdown.
How overdubbing and latency compensation work
When you record track 2 while track 1 plays, two delays add up. The backing track reaches your ears a few milliseconds after the browser plays it (output latency), and your performance reaches the recorder a few milliseconds after you make it (input latency). Their sum is the round-trip latency. Without correction, each new take lands that much behind the beat.
This recorder places every new take at recording start − latency: if the round trip is 60 ms, the first 60 ms captured after you press Record are dropped, and the take is aligned with what you heard. The Measure button plays seven clicks through your speakers, finds them in the microphone signal and uses the median delay.
Setup
Typical round-trip latency in a browser
Tip
Desktop with USB audio interface and wired headphones
15–40 ms
Best for overdubs; measure once and keep the value
Laptop built-in mic and speakers
30–80 ms
Use headphones while recording to avoid bleed
Phone or tablet with wired headphones
40–150 ms
Measure before every session
Any device with Bluetooth headphones
150–300 ms
Avoid for overdubs: delay is large and can vary
These figures are common ranges, not guarantees: the measured value for your own device is what matters.
Metronome and tempo reference
The click plays on every beat, with a higher note on the first beat of each bar. One beat lasts 60 ÷ BPM seconds, so at 100 BPM a beat is 0.6 s and a 4/4 bar is 2.4 s. The ruler above the tracks is numbered in bars at the current tempo.
Count-in plays one or two bars of click before recording starts so you can come in on time.
Click only while recording keeps the metronome out of the way when you just listen back.
The click is never part of the mixdown.
Mixing tips
Record at a healthy level: aim for peaks around the orange part of the input meter and never in the red.
Pan to make room: keep bass, kick and lead vocal in the center and spread guitars, keys and backing vocals left and right.
Use solo to check one track for noise or timing, and mute to compare takes.
Normalize the mixdown so the loudest peak sits at −1 dB, which stops clipping without changing the balance.
Frequently asked questions
How do I record multiple tracks online?
Arm a track, press Record and perform your first part. When you stop, the next empty track is armed. Press Record again and the first track plays back while you record the second, and so on for up to 8 tracks. Finally press Download mixdown to get one WAV or MP3 file of the whole song.
Why are my overdubs slightly late, and what is latency compensation?
Sound takes time to go out through your speakers or headphones and back in through the microphone and audio drivers, usually 20 to 150 ms in a browser. You hear the backing tracks a little late and the recording arrives a little late, so new takes sit behind the beat. Latency compensation moves every new take earlier by that many milliseconds. Press Measure with the microphone near a speaker to measure it, or adjust the value by ear until a clap recorded with the click lines up.
Do I need headphones?
Yes, for overdubs. With speakers the microphone also records the metronome and the other tracks, and that bleed builds up with each new track. The tool turns off echo cancellation and noise suppression on purpose, because they damage music recordings.
Can I record more than one input at the same time?
No. One track is recorded at a time, from the input you choose. With an audio interface you can pick which of its inputs to use. Stereo files can be imported, and tracks keep their stereo when imported.
What is the audio quality?
Audio is captured uncompressed at your device's sample rate (usually 44.1 or 48 kHz) as 32-bit floating point, and the mixdown is saved as 16-bit WAV or MP3. Normalize raises or lowers the final mix so its loudest peak is at −1 dBFS, which avoids clipping.
Are my recordings saved or uploaded?
Nothing is uploaded; recording, mixing and encoding all run in your browser. The tracks live in the page's memory, so they are lost if you close or reload the tab. Download the mixdown, or save each track as a WAV, before leaving.
Does it work on phones?
It works in recent Chrome, Edge, Firefox and Safari on desktop, and in most mobile browsers that allow microphone access. Phones add more latency and usually have one built-in microphone, so use wired headphones and measure the latency before recording.
Are all the tools on FreeToolCabin tested for quality and accuracy?
Yes! Every tool on our site undergoes automated Q/A testing in real browser environments to ensure high precision, correct output, and zero errors. If you happen to spot a bug or have a suggestion, please contact us at [email protected] and our team will review it right away.