Online Voice Recorder
Record your voice in the browser with pause and resume, then save it as WebM/M4A, MP3 or WAV. Optional silence trimming. Nothing is uploaded.
A simple voice recorder that runs in your browser: press Calculate, speak, and press Stop. You can pause and resume, see the input level while you talk, and save the result as MP3 for sharing or WAV for editing, with silence at the ends trimmed if you like. The recording is made and kept on your device; nothing is sent to a server.
How to use this tool
- Choose MP3 or WAV and the maximum length.
- Press Calculate and allow microphone access.
- Speak; use Pause and Resume as needed, and press Stop recording when done.
- Play the recording back and download it before you leave the page.
Formula
MP3 size ≈ 128 kbps × 1000 ÷ 8 × seconds ≈ 0.94 MB per minute (mono)
The browser records with MediaRecorder: Chrome, Edge and Firefox make Opus audio in WebM, Safari makes AAC in M4A. That file is always offered. For MP3 or WAV it is decoded and re-encoded (MP3: LAME at 128 kbps mono, 44.1 kHz; WAV: 48 kHz, 16-bit mono). Silence trimming cuts quiet parts below −50 dBFS at the ends and keeps 0.15 s of margin.
Example
A 3-minute voice memo saved as MP3 is about 128,000 ÷ 8 × 180 = 2.9 MB. As WAV (48 kHz, 16-bit mono) it is 48,000 × 2 × 180 ≈ 17.3 MB, which is better only if you plan to edit it.
Frequently asked questions
Is my recording uploaded?
No. It is recorded into the page's memory and offered as a download. Closing or reloading the page discards it, so save it first.
Should I keep echo cancellation and noise suppression on?
For speech in a normal room, yes. For singing, instruments or a good external microphone, turn them off: they can make music sound thin or pumping.
Can I record on a phone?
Yes, in current Chrome, Safari, Firefox and Edge. Keep the page in front while recording, because phones may pause background tabs.
What happens if I switch tabs or close the page?
On a computer the recording keeps going in another tab, and the browser shows its recording indicator on this tab. Closing, reloading or leaving the page stops the recording and turns the microphone off at once, and an unsaved recording is lost.
Last updated:
Page address with these inputs: https://kakao.mobile/tools/voice-recorder/
Cite or embed this tool
kakaoCalc. (2026, November 8). Online Voice Recorder. https://kakao.mobile/tools/voice-recorder/
“Online Voice Recorder.” kakaoCalc, 8 Nov. 2026, kakao.mobile/tools/voice-recorder/.