Free Podcast Tool

Record Your Voice Online

Record, pause, and export a podcast-ready MP3. Free, private, and entirely in your browser.

Click below and allow microphone access when your browser asks.

Recording happens entirely in your browser. Nothing is uploaded until you choose to download it.

Not sure how you sound? Test your mic first →

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How To Record Your Voice Online

  1. Step 1

    Allow Microphone Access

    Click Start Recording and allow microphone access when your browser asks. Pick a different microphone from the dropdown if you have more than one connected.

  2. Step 2

    Record, Pause, Or Resume

    Watch the level meter and elapsed timer while you record. Pause anytime without ending the take, then resume right where you left off.

  3. Step 3

    Export And Download Your MP3

    Click Stop & Export MP3 and download a podcast-ready file. Turn on noise reduction, silence trimming, or loudness normalization first if you want a quick cleanup pass.

A Quick Way To Capture Your Voice

A voice memo for a script idea, a quick backup of a guest's side of a call, or a first take of an intro you want to hear back before you commit to it. Not every recording needs a full editing setup. This tool captures your voice and exports it as an MP3 without installing anything or creating an account.

Nothing Leaves Your Device

Recording and exporting both happen in your browser. Your microphone audio is never sent to a server while you record, and the MP3 export runs locally too. Close the tab and the working files disappear.

Podcast-Ready MP3 At 128 kbps

Every recording is exported as an MP3 at 128 kbps, a standard podcast bitrate that keeps spoken audio clear at a practical file size. There is no format menu to configure and no extra setting to second-guess before you upload it to a host.

A Quick Cleanup Pass, If You Want One

Three optional checkboxes sit above the export button: reduce background noise, trim silence from the start and end, and normalize loudness toward the -16 LUFS most podcast platforms target. All three run in the browser as part of the same export, so turning them on doesn't cost you a second pass or a different tool.

Recording Ready? Publish Your Podcast In 3 Steps

  1. Upload a new episode in Castos

    Upload The MP3

    Create a show in Castos and upload your recorded MP3 with your episode title, description, and artwork.

  2. Fill in podcast details in Castos

    Get Your Feed And Website

    Castos creates the RSS feed podcast apps need and a customizable site where listeners can find every episode.

  3. Link your feed to each podcast directory

    Publish Everywhere

    Submit your feed to Apple Podcasts, Spotify, and other directories once. Future episodes are distributed automatically.

Frequently Asked Questions

How do I record my voice online?
Click Start Recording and allow microphone access when your browser asks. Pick a microphone from the dropdown if you have more than one, then record, pause, and resume as needed. When you're done, click Stop & Export MP3 to download a podcast-ready file.
Is this voice recorder free?
Yes. This recorder is free, requires no account, and adds no watermark. The output is a standard 128 kbps MP3.
Is my recording uploaded anywhere?
No. Your browser captures and exports the recording on your device with WebAssembly. Castos never receives or stores your audio. The first export may take a moment because the browser needs to load the exporter first.
Can I pause and resume a recording?
Yes. Click Pause at any point to stop capturing without ending the take, then click Resume to continue from where you left off. The elapsed timer only counts time spent actively recording.
Why is the export always an MP3 at 128 kbps?
128 kbps is a standard podcast bitrate. It keeps spoken audio clear at a practical file size for hosting and listening, so there is no format menu to configure or second-guess.
Which browsers and microphones does this work with?
Any browser and microphone your operating system already recognizes for video calls will work here, including built-in laptop mics, USB mics, and Bluetooth headsets. Chrome, Firefox, Edge, and Safari all support the recording and export.
Can I clean up background noise or trim silence automatically?
Yes. Before you export, check Reduce background noise, Trim silence from the start and end, or Normalize loudness for podcast platforms. All three are optional and run as part of the same export, so there's no extra pass or separate tool needed.
What happens if my browser crashes while I'm recording?
Your recording is checkpointed to your browser's local storage every 30 seconds while you record. If the tab closes or crashes before you export, reopening this page offers to recover and export what was saved.

Publish Your Recording With Castos

Upload your MP3, create your podcast feed, and distribute every episode from one place.