Niconico is a Japanese video hosting website that offers a variety of anime series, music videos, game videos, etc. It is often hailed as the Japanese version of YouTube. Niconico’s most distinctive feature is the bullet comment system, which brings a highly interactive viewing experience and has influenced many other online TV platforms.
How to Download Niconico to MP3
The first method is to use a Niconico downloader to download Niconico in MP3 format. Here are 2 free Niconico to MP3 downloaders for you.
- Online-Convert
- Video DownloadHelper
Commonly, downloading Niconico to MP3 only needs several simple steps.
- Find a Niconico to MP3 downloader
- Paste a URL from Niconico to import files
- Start the conversion
- Download the converted audio file
#1 Online-Convert

Online-Convert is an online converter for video and audio conversions. You can upload a video from your computer or by entering a URL and convert it into MP3, AAC, FLAC, M4A, M4R, MMF, OGG, WAV, and WMA.
Here’s how to convert Niconico to MP3.
1. Enter the Online-Convert website in the web browser.
2. Select the Convert to MP3 option in the Audio converter tab.
3. Copy the URL of the Niconico video you like.
4. Click on Enter URL and paste the copied link in the box. Then click the Add URL button.
5. Press the Start conversion button to convert Niconico video to MP3.
#2 Video DownloadHelper
If Online-Convert doesn’t work, you can use another Niconico downloader – Video DownloadHelper. Besides downloading Niconico audio, this tool can download and convert streaming videos to MP3, MP4, AVI, WMV, etc.
Here’s how to download an MP3 from Niconico.
1. Find Video DownloadHelper in the Chrome Web Store.
2. Download and install the extension.
3. Go to Niconico and play the video that you want to extract MP3 from.
4. Click the extension icon. From the popup window, click the three dots.
5. Then select Download & Convert and choose MP3 as the output format.
6. Save the MP3 file from Niconico.
How to Convert Downloaded Niconico Videos to MP3
Another method is to use an MP3 converter to convert downloaded Niconico videos to MP3.
- MiniTool Video Converter
- Online Converter
What about the general conversion steps? Just a few easy steps.
- Download a video/audio-to-audio converter
- Upload the target file
- Set MP3 as the output format
- Start the conversion
- Check or save the converted file
#1 MiniTool Video Converter
MiniTool Video Converter supports converting the downloaded Niconico file to MP3, WMA, AAC, OGG, and more. It also allows you to customize advanced parameters, such as bitrate and sample rate.
1. Download and Install MiniTool Video Converter
Download and install MiniTool Video Converter.
MiniTool Video ConverterClick to Download100%Clean & Safe
2. Upload the Target File
Launch MiniTool Video Converter on the computer. In the default Convert Video tab, click on the Add Files option to import the file downloaded from Niconico.

3. Specify MP3 as the Output Format
Click on the Gear icon to open the output format window. Next, go to the Audio tab and choose MP3. Then, choose an audio quality option, like High Quality.

4. Begin the Conversion Process
Expand the Output option to choose a storage location for the converted MP3 audio. Then, click on the Convert button to begin the conversion process.

5. Check the Converted Audio
Once the conversion ends, the converted audio will land on the Completed tab. Here, click on the Play icon to check it. Or click on the Folder icon to locate the converted audio on PC.

This converter makes it easier to convert Niconico to MP3. It also supports batch conversion of up to 5 tasks.
#2 Online Converter
After downloading Niconico videos, you can use Online Converter to convert them to MP3. Online Converter is an online audio conversion service, which can extract MP3 from Niconico video. The max file size is 200MB.
Here’s how:
1. Visit the Online Converter website.
2. Navigate to Audio Converter > MP3 Converter.
3. Select the Video to MP3 option from the Convert box and upload the downloaded Niconico video.
4. Click on Convert to start the Niconico to MP3 conversion.
Conclusion
This article shows how to download Niconico to MP3 with 2 effective downloaders, including Online-Convert and Video DownloadHelper. Also, the post shares 2 video/audio to MP3 converters, which are MiniTool Video Converter and Online Converter.
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