# Online Voice Recorder — Record Audio in Your Browser

> Record voice notes or audio from your microphone and download the file. No account, no upload.

To record audio in your browser, allow microphone access, press record and speak. The audio is encoded by MediaRecorder as Opus in a WebM container — or AAC in MP4 on Safari — and saved straight to your device. Nothing is uploaded, so voice notes and interviews never touch a server.

**URL:** https://convertto.tech/t/audio-recorder
**Category:** Browser & Device (https://convertto.tech/c/browser-tools)
**Privacy:** Runs entirely in the browser; no upload
**Cost:** Free, no sign-up
**Last updated:** 2026-08-01

## Key facts

- **Codec:** Opus at around 128 kbps — transparent for speech at a fraction of MP3's size
- **Privacy:** Runs entirely in your browser — nothing is uploaded
- **Cost:** Free, unlimited, no sign-up

## How to use

1. Turn "Ready" on or off as needed.
2. The result appears immediately — copy or download it.

## FAQ

### What format is the recording?

Opus audio in a WebM container on Chrome, Edge and Firefox; AAC in MP4 on Safari. Opus is the better codec for voice — it stays clean at bitrates where MP3 sounds obviously compressed — and every modern player handles it. Convert to MP3 afterwards if a specific tool demands it.

### Can I record a phone call or system audio?

Not from a microphone tool. Browsers only expose microphone input here; capturing what your computer is playing requires the screen recorder with audio sharing enabled, and capturing a phone call is not something a browser can do at all.

### Is my recording uploaded anywhere?

No. The audio chunks are collected in the page, assembled into a blob and handed to your browser's download mechanism. Closing the tab discards them — there is nowhere else for them to go.

## Related tools

- [Screen Recorder](https://convertto.tech/t/screen-recorder): Record your screen, a window or a browser tab with optional audio, straight from this page.
- [Video Converter](https://convertto.tech/t/video-converter): Convert video between MP4, WebM and MKV entirely in your browser.
- [Microphone Test](https://convertto.tech/t/microphone-test): Check that your microphone works, watch the live waveform and see whether your level is right.
- [Browser Permissions Inspector](https://convertto.tech/t/permissions-inspector): Check the permission state of camera, microphone, location, notifications and more for this origin.
- [What Browser Am I Using?](https://convertto.tech/t/browser-info): See your browser, engine, version, platform and which web features it supports.
- [Camera Test](https://convertto.tech/t/camera-test): Check that your webcam works, see the resolution it delivers and take a test photo.
- [Connection & Network Information](https://convertto.tech/t/connection-info): See what your browser reports about the network: connection type, downlink estimate and round-trip time.
- [File Type Identifier](https://convertto.tech/t/file-type-identifier): Identify any file from its magic bytes, and see whether the extension is telling the truth.