Voice Recorder
Record audio from your microphone directly in the browser. Click record, speak, then stop and download the audio file. Nothing is recorded or stored on any server.
Voice Recorder
Record audio from your microphone
Recorded audio = microphone stream captured via the MediaRecorder API, output as a downloadable WebM audio file. All recording happens client-side.
How Voice Recording Works
Voice recording uses the MediaRecorder API, a standard browser web API:
**Supported APIs**: - `navigator.mediaDevices.getUserMedia({ audio: true })` - microphone audio input - `MediaRecorder` - encodes and exports the audio stream
**Recording process**: 1. User clicks 'Start Recording' 2. Browser prompts for microphone permission (browser security feature) 3. MediaRecorder starts capturing the audio stream 4. Audio is encoded in real-time to WebM format 5. User can pause/resume the recording 6. User stops the recording 7. MediaRecorder finishes the blob and generates a downloadable URL
**File format**: WebM audio (VP8/Opus codec). Playable in all modern browsers and most media players. If WebM is not supported, the output is OGG audio.
**Privacy**: No audio is ever transmitted to our servers. All recording happens entirely in your browser. You can revoke microphone permission in your browser settings at any time.
- 100% private - recording never uploaded to server
- No signup required
- Works in all modern browsers
- Microphone permission is browser-native
Worked Example
Example: Recording a 2-minute voice memo:
- Click 'Start Recording' and allow microphone permission - Speak for 2 minutes (120 seconds) - Pause once for 30 seconds to gather thoughts, then resume - Final recording duration: 1 minute 30 seconds of speech - Estimated file size: ~2-4 MB (WebM audio at moderate bitrate) - After stopping, preview appears with play controls - 'Download Audio' saves 'voice-recording.webm' to downloads folder
**Tips for good voice recordings**: - Speak clearly and at a consistent distance from the microphone - Use a headset or external mic for cleaner audio than built-in laptop mic - Record in a quiet room to minimize background noise - Test audio levels before starting a long recording
Voice vs. Screen Recording
- **Voice Recorder**: Audio only. Small file size, ideal for voice memos, interviews, dictation, and quick notes. - **Screen Recorder**: Video + optional audio. Larger file size, ideal for tutorials, demonstrations, and walkthroughs. - **Webcam + Screen Recorder**: Video with picture-in-picture webcam overlay. Ideal for tutorials where you want to show your reactions. - **GIF Maker**: Short looping animations from screen recordings, no audio. Ideal for quick demos and social sharing.
**This tool's focus**: Pure audio recording with minimal file size and maximum privacy.
Related Calculators
Percentage Calculator
Find percentages, calculate % of a value, and percentage increase/decrease.
Open calculator →Screen Recorder
Record browser tab, entire screen, or window with audio; pause/resume; MP4 download, no time limit, no watermark.
Open calculator →Webcam + Screen Recorder
Record webcam overlay on screen recording; picture-in-picture for tutorials.
Open calculator →GIF Maker
Convert screen area recording to animated GIF, with frame rate and size limits.
Open calculator →Frequently Asked Questions
Is there a time limit on voice recordings?
No. The tool does not impose a time limit. Your recording duration is limited only by your available storage space and browser performance.
Can I record audio from both system and microphone?
This voice recorder captures microphone input only. For system audio + microphone together, use the Screen Recorder tool.
What audio format does it produce?
WebM audio by default, with OGG as a fallback. Both are widely supported in modern browsers and media players.
Looking for a different calculator?
CalculatorPlus has free tools across finance, construction, math, health and more — each one showing the formula and a worked example.