Frequently Asked Questions

Yes, completely free. No account registration, no payment, and no usage limits. All features are available with no restrictions.

No. The MP3 Cutter Tool runs entirely in your browser — just open the webpage and start using it. It works with all major browsers including Chrome, Firefox, Safari, and Edge.

After uploading a file, drag to select the region you want to keep in the waveform display, set the start and end times, then click Export. For detailed steps, see the complete step-by-step guide.

Yes. Using the "Add Segment" feature, you can select multiple different segments from the same audio file and then export them individually or merge them into one file. See the Merge Audio guide for details.

There is no fixed upload-size limit because the file is not uploaded. The practical limit depends on available device memory, media duration, format, and browser. Long videos and lossless audio use more RAM; close other tabs or use a desktop if processing stalls.

You can achieve millisecond-level precision by entering times manually. The time input fields accept seconds with decimal points (e.g., 1:23.456), which is more than enough for most precise editing needs.

Import common browser-decodable audio such as MP3, WAV, OGG, M4A, AAC, and WebM, plus video with an audio track such as MP4, MOV, M4V, and WebM. Actual decoding varies by browser and operating system. Export supports MP3, WAV, and iPhone M4R.

Yes. Although the main feature is cutting, you can upload one format (e.g., WAV) and select the entire audio to export as another format (e.g., MP3), effectively converting between formats. See the Audio Format Conversion Guide for details.

M4A is a container that can hold different codecs. If the current browser cannot decode that codec, no waveform appears. Try another browser or convert the file to MP3 or WAV. DRM-protected files cannot be processed.

Direct FLAC decoding depends on the current browser. If no waveform appears, try a current desktop browser or convert FLAC to WAV first. See the Audio Format Comparison for details.

Use a current Chrome, Edge, Safari, or Firefox release. Desktop browsers are generally better for long videos and large audio. iPhone Safari and Android Chrome support core editing, but capacity depends on available phone memory. Codec support still varies by browser and operating system.

The default export is 192 kbps MP3, which provides a good balance between file size and audio quality. If you want to understand how bitrate affects quality, see the Audio Compression & Bitrate Guide.

No. Media content is decoded, edited, and exported in your browser; our servers do not receive or store it. The site still loads advertising, CDN, and necessary website services. Those ordinary network requests do not include your selected media. See the Privacy Policy.

Modern browsers include a powerful built-in Web Audio API that can decode, process, and encode audio directly in the browser. This means no file needs to be sent to a server — all computation is done by your own computer's CPU.

Working media is primarily held in the current tab's memory. Reloading or closing the tab does not leave a copy on our servers. Your source and downloaded export files remain on your own device.

If you upload an MP3 and export as MP3, the audio goes through one re-encoding step, which theoretically causes a very slight quality loss — but it's typically imperceptible under normal listening conditions. If you export as WAV, there is no additional quality loss (though the file will be larger).

On good headphones or speakers, you can hear a difference — 320 kbps has crisper highs and more overall fullness. On average phone speakers or budget earphones, the difference is minimal. For a detailed comparison, see MP3 vs WAV and the Audio Compression Guide.

No. Data discarded during lossy compression doesn't come back when you convert to a lossless format. Converting MP3 to WAV just stores the same quality audio in a larger file. See the explanation in the Format Conversion Guide.

Yes. The MP3 Cutter Tool uses responsive design and works on both phones and tablets. However, due to the performance limitations of mobile devices, processing large files may be slower.

Yes. Select a clip up to 30 seconds and export M4R directly. Adding the custom ringtone to iOS still follows Apple's supported Files or GarageBand workflow. See the Ringtone Creation Guide.

Absolutely — and it's even simpler. Just place the exported MP3 file in your phone's Ringtones folder and select it as your ringtone in Settings. See the Ringtone Creation Guide for details.

Please try the following:

• Confirm the file contains a decodable audio track and is not DRM-protected
• Try a current Chrome, Edge, Safari, or Firefox release
• Check whether the file is corrupted (try playing it in another media player)
• Clear your browser cache and try again
• If the file is very large, it may take longer to load — please be patient

Please check the following:

• You have correctly set a start and end time for at least one segment
• The start time is before the end time
• Your browser isn't blocking the download (check your browser's download settings)
• Try refreshing the page and repeating the steps

Audio processing speed depends on your computer's performance and the file size:

• Close other resource-intensive tabs or applications
• If the file is over 100 MB, consider compressing or splitting it with another tool first
• Use a recent version of your browser for the best performance
• Make sure your computer has enough available memory (at least 4 GB recommended)

This is rare, but if it happens, try the following:

• Try playing it in a different media player (VLC is a free player that supports almost every format)
• Redo the cut and export process from scratch
• Try exporting as a different format (if MP3 has issues, try WAV)
• Make sure the clipped segment is not zero seconds long (start and end times must be different)

If your question isn't covered above, feel free to submit it via the Contact Us page. We'll get back to you as soon as possible and will keep updating this FAQ.