video tool
Online voice recorder
Press record, speak, and stop: the recording is held in this page, shown as a waveform you can trim at both ends, and saved to your device as the format the browser recorded or as a WAV file. Nothing is uploaded, so a draft voiceover or a private note never leaves the computer or phone.
Loading the tool…
- Runs on your device, nothing is uploaded
- Free, no sign in
- No watermark, no file limit
How it works
- 1
Pick the microphone
The default is fine. After the first recording, named microphones appear in the list.
- 2
Record
Press Start and allow microphone access. Watch the level bar: green is good, red means too loud.
- 3
Trim the ends
Drag Keep from and Keep until to cut silence or false starts; the waveform shows what stays.
- 4
Save
Save the kept part as WAV, or the whole take in the format it was recorded in.
How the recording stays on your device
The page asks the browser for the microphone, and the browser's MediaRecorder, a standard part of every modern browser, encodes the sound into a file in memory. The waveform is drawn by decoding that file with the Web Audio interface, and the WAV export writes the samples straight into a WAV file in the page. None of it involves a server: the recording exists only in this tab until you save it, and closing the tab discards it. That makes it suitable for private notes, interview practice or a voiceover that is not ready to share.
Getting a clean take
Distance and room matter more than the microphone. Speak about a hand's width from a phone or headset microphone, a little further from a laptop. Soft furnishings absorb echo, so a wardrobe full of clothes or a small carpeted room records better than a kitchen. Turn off fans and close windows. Keep the level bar mostly green with occasional peaks; if it touches red, move back or speak softer, because clipped sound cannot be repaired afterwards. Record ten seconds of silence first to hear the room.
Recording formats by browser
Chrome, Edge and Firefox record WebM or Ogg with the Opus codec, which is small and clear for speech. Safari records M4A with AAC. All of these play in modern browsers and most media players, but some older software expects WAV or MP3. The WAV export is the universal option: every audio and video editor opens it, at the cost of a much larger file. For an upload with a size limit, the original recorded format is usually far smaller.
Trimming without an editor
Most takes start with a click and a pause and end with a reach for the mouse. The two handles set where the kept part starts and ends, and the waveform greys out the rest. Trim on a quiet moment rather than mid word. The trimmed WAV is cut at the exact sample, so it can be dropped straight into a video timeline. For edits in the middle of a recording, such as removing a mistake, use an audio editor; this tool deliberately keeps to the two ends.
Voice for videos and forms
A recorded voiceover can go into a video: the video builder accepts audio uploads up to 25 MB, so a few minutes of WebM or M4A fits easily, while a long WAV may need shortening. For collecting voice answers from other people, a conversational form can include a recording field, which by default allows up to 120 seconds per answer and stores the response with the rest of the form.
Permissions and privacy
The browser shows a microphone indicator while recording and asks permission the first time. If access was blocked, re-enable it from the address bar's site settings. The page never sends the audio anywhere, and no network request carries it, which you can confirm in the browser's developer tools.
Limits
- No MP3: browsers record in their own formats, usually WebM with Opus, or M4A in Safari, and MP3 encoding would need an extra library.
- A phone may stop recording if the screen locks or the tab goes into the background.
- Trimming is at the ends only; cutting out a cough in the middle needs an audio editor.
- WAV files are large: about 11 MB a minute for stereo at 48 kHz.
What it does not do
- It does not upload or transcribe the recording.
- It does not remove background noise.
- It does not keep the recording after the tab closes.
Questions people ask
How do I record my voice online?
Open this page, press Start recording and allow microphone access when the browser asks. Speak, then press Stop. The take appears as a waveform you can play, trim and save. Everything happens in the browser on your device, and nothing is uploaded.
What format does it save in?
Two choices. The whole take saves in the format the browser recorded, usually WebM with Opus in Chrome, Edge and Firefox, or M4A with AAC in Safari. The trimmed part saves as WAV, uncompressed, which every audio and video editor can open but which is much larger.
Can I trim the recording?
Yes, at the start and the end. Drag the Keep from and Keep until sliders and the waveform shows what stays. Save the kept part as WAV. Removing a section from the middle needs an audio editor, such as Audacity.
Why does the recording stop on my phone?
Phones pause pages that go into the background or when the screen locks, and the microphone stops with them. Keep the screen on and the page in front while recording. For long recordings, the phone's own voice memo app is more reliable.
Is there a time limit on recordings?
No fixed limit is set, but the recording is held in memory until you save it, so very long sessions use more and more of it. For takes over about half an hour, save in parts. WAV exports of long takes are also large, around 11 MB per minute.
Use your voice in a video
Take what you made here into videos.
Create a video with OneCraftMore tools like this
- Audio waveform viewerAn audio waveform viewer for MP3, WAV, OGG and M4A: the waveform, peak and average level in dBFS, clipped samples and silent stretches, in your browser.
- Screen recorder onlineA free screen recorder online: record a screen, window or tab with or without your microphone, review it, and save a WebM file. Nothing to install, no upload.
- Speaking time calculatorPaste a script and see it laid out on a clock, section by section, against the slot you have. Six measured speaking rates, and a rehearsal timer.
- Online teleprompterA free online teleprompter: paste your script and it scrolls at a words per minute pace you set, with text size, mirror mode, full screen and a tap to pause.
- Video file size calculatorVideo file size calculator: size from bitrate and length, or the bitrate that fits an upload limit, with 1080p and 4K presets from YouTube's recommended rates.
Background reading: the question page on this.
Written and checked by the OneCraft team. Last checked .