The simplest way to record audio on your computer

The fastest way to record audio is to use the built-in recording tool that came with your operating system. On Windows, that's the Voice Recorder app. On Mac, it's QuickTime Player. Both are free, already installed, and require no setup—you open the app, hit record, and start speaking into your microphone.

If you want to record audio from another source—a video call, music playing through your speakers, or a podcast—you'll need a different tool, because the built-in recorders only capture sound from your microphone. For that, free programs like Audacity work on Windows, Mac, and Linux, and they let you record from any audio source your computer can play.

The choice between these two paths depends on what you're recording. If it's just your voice—a memo, an interview, a voiceover—use Voice Recorder or QuickTime. If it's system audio, music, or a mix of sources, use Audacity or a similar multi-source recorder.

Key Takeaways

  • Windows Voice Recorder and Mac QuickTime Player are built-in tools that record your microphone with one click and save as MP3 or M4A files.
  • To record audio playing through your speakers—music, videos, or call audio—you need a third-party program like Audacity, which is free and works on all operating systems.
  • Before you record, check that your microphone is plugged in and set as the default input device in your system settings.
  • Most recordings save as MP3 or WAV files, which play on any device and can be edited later if needed.

Recording your voice with Windows Voice Recorder

Open the Start menu and type "Voice Recorder" into the search box. Click the app when it appears. You'll see a microphone icon in the center of the window and a red "Record" button below it. Click the button to start recording. Your voice will be captured as long as your microphone is plugged in and working.

While recording, you'll see a timer showing how long you've been recording. Click the stop button (a square icon) when you're done. The app will ask you to name the file. Type a name and press Enter. The recording saves automatically as an M4A file in your Documents folder under "Sound recordings."

If you need to pause without stopping, click the pause button (two vertical lines). You can resume from where you paused. If you want to delete a recording, open the file in File Explorer, right-click it, and select Delete.

Recording your voice with Mac QuickTime Player

Open QuickTime Player from your Applications folder or by pressing Command + Space and typing "QuickTime." Click File in the menu bar, then select "New Audio Recording." You'll see a red circle button in the center—that's your record button. Click it to start capturing audio from your microphone.

The timer shows elapsed time. Click the stop button (a red square) when finished. A new window opens with your recording. Click File, then "Save" to name the file and choose where to store it. QuickTime saves as M4A by default, which works on any device.

If you want to trim the recording before saving, click Edit in the menu bar and select "Trim." Drag the handles at either end of the timeline to remove unwanted sections, then save.

Recording system audio and other sources with Audacity

Audacity is a free, open-source recorder that captures audio from your microphone, your speakers, or both at once. read it from audacityteam.org and install it like any other program. When you open Audacity, you'll see a blank timeline and a red record button in the toolbar at the top.

Before you record, check the input source. Look at the dropdown menu that says "Microphone" or "Stereo Mix" near the top left. If you want to record your microphone, leave it on "Microphone." If you want to record audio playing through your speakers—music, a video, a call—select "Stereo Mix" or "What U Hear" (the name varies by computer). If you don't see "Stereo Mix," your system may not have it enabled; see the FAQ section below for how to turn it on.

Click the red record button to start. The timeline will fill with a blue waveform showing your audio in real time. Click the pause button (two vertical lines) to pause without stopping, or click the stop button (a square) to finish recording. The audio stays in Audacity so you can edit it before saving.

Checking your microphone and audio settings before recording

Before you record anything, make sure your microphone is set as the default input device. On Windows, right-click the speaker icon in the bottom right corner of your screen and select "Open Sound settings." Scroll down to "Input" and check that your microphone appears in the dropdown. If it doesn't, plug it in and wait a few seconds for Windows to recognize it.

On Mac, click the Apple menu, select "System Settings," then click "Sound." Go to the "Input" tab and select your microphone from the list. If you don't see your microphone, unplug it, wait five seconds, and plug it back in.

Test your microphone by speaking into it while watching the input level meter in your recording app. You should see the meter move when you talk. If it doesn't move, the microphone isn't working or isn't selected. If the meter jumps too high and the audio sounds distorted, move the microphone a few inches away from your mouth.

Saving and exporting your recording in the right format

Voice Recorder and QuickTime save automatically in formats that work everywhere—M4A on both apps. Audacity requires you to export your recording before it's saved as a usable file. Click File in the menu bar, then "Export," then choose your format. MP3 is the most common choice because it plays on any device and takes up less space than WAV.

When you export, Audacity asks you to name the file and choose a location. Type a descriptive name—"Interview with Sarah" instead of "Recording1"—so you can find it later. Click "Save" and Audacity will process the file, which takes a few seconds depending on how long the recording is.

After exporting, the file appears in the folder you chose. You can now email it, upload it, or edit it in another program. The original Audacity project stays open in case you want to make more changes, but closing Audacity without exporting means your changes won't be saved as a file.

Common mistakes that ruin recordings

The most common mistake is recording without checking that the microphone is working first. Always do a short test recording and listen to it before you record something important. If you hear nothing or heavy static, your microphone isn't connected or isn't selected as the default input.

Another mistake is recording system audio without enabling "Stereo Mix" on Windows. If you try to record music or a video and get silence, it's usually because Stereo Mix is off. The same applies on Mac with "Soundflower" or similar tools—they need to be installed and configured before you can record what's playing through your speakers.

A third mistake is forgetting to export in Audacity. Many people record something, close the app, and think it's saved—but Audacity only saves as an editable project file, not as an MP3 or WAV. Always export before closing if you want to use the recording outside Audacity.

Finally, recording too close to the microphone causes distortion and makes speech hard to understand. Position the microphone 6 to 12 inches from your mouth, and speak at a normal volume. If you're recording a quiet source, move the microphone closer rather than turning up the volume in software.

Frequently Asked Questions

Can I record a phone call or video meeting?

Yes, but the method depends on the platform. Most video call apps like Zoom and Google Meet have a built-in record button—click it during the call and the app saves the recording automatically. For phone calls through your computer, use Audacity with Stereo Mix enabled to record both sides of the conversation. Always tell the other person you're recording, as some places require consent.

Why do I see no audio waveform when I try to record system audio?

On Windows, "Stereo Mix" is usually disabled by default. Right-click the speaker icon in the bottom right, select "Open Sound settings," scroll to "Advanced," then "Volume mixer." Look for "Stereo Mix" in the list. If it's grayed out, right-click it and select "Enable." On Mac, you may need to install a tool like Soundflower to record system audio; QuickTime alone cannot record what's playing through your speakers.

What's the difference between MP3 and WAV files?

MP3 files are smaller and work on any device, making them ideal for sharing and storage. WAV files are larger but preserve more audio detail, making them better for professional editing or archiving. For most purposes—voice memos, interviews, podcasts—MP3 is the right choice. Use WAV only if you plan to edit the recording heavily in audio software.

How much storage space does a recording take up?

An MP3 recording takes roughly 1 megabyte per minute of audio. A one-hour recording is about 60 megabytes. WAV files are roughly 10 megabytes per minute, so a one-hour WAV recording is about 600 megabytes. Most computers have plenty of storage for recordings, but if you record many hours, MP3 saves significant space.

Can I record audio while using other programs?

Yes. Recording apps run in the background and don't prevent you from using your browser, email, or other software. However, if you're recording system audio and you open a video or music player, that sound will be captured along with whatever else you're recording. Close or mute other audio sources if you want to record only one thing.