Audio Converter
Upload files, choose a target format, and convert audio directly in your browser.
Drop files here or
Supports common audio and video formats.
KikiVoice provides audio conversion algorithms that run in your browser on your device. Audio files are not uploaded to KikiVoice servers.
Processing time and large-file experience depend on the device and browser.
Files to convert
Over 200,000 creators trust kikivoice for their cloning needs.
Convert audio files and extract audio from video
The Audio Converter changes audio files from one format to another. It can also extract audio from video files, so you can save the sound from MP4, MOV, WebM, AVI, MKV, and other common video formats.
What the audio converter does
- Convert common audio formats such as MP3, WAV, M4A, AAC, FLAC, OGG, Opus, and AIFF.
- Change output settings such as bitrate, sample rate, channels, quality, compression level, and bit depth when the selected format supports them.
- Import common video files and export the audio track to a regular audio format.
How to convert audio
Add one or more audio or video files, select the target audio format, review the available options, and click Convert All. Choose a less compressed format when quality matters, or a smaller format when you need a file that is easy to share.
What can this audio converter help you do?
Audio conversion changes an existing sound file into another file format. For example, if someone needs an MP3 but your audio is in a different format, you can try converting it here. You can also select a video that contains sound and save its audio as a separate file.
This page changes file formats and extracts audio from video. To keep only part of a recording, join clips, or reduce background noise, use the audio tool for that task. The converter does not generate voiceovers or add sound that was not in the source file.
How do I convert audio to the format I need?
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Choose a file from your device
Click the file selection area above and choose the audio you want to convert. If you only need the sound from a video, select a video that contains an audio track. You can also drag a file into the selection area.
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Choose the target format
After adding a file, choose the format you need from the target format list. For example, choose MP3 if that is what the recipient asks for. A format appearing in the list does not mean every source file can be converted to it successfully.
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Open Options if you need more settings
The Options panel beside the format selector is closed by default. Open it to see the settings available for that format. If you are unsure what to choose, keep the defaults and only change a setting when the recipient has a specific requirement.
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Start converting and keep the page open
Click the conversion button to let your browser process the file. Keep the page open without refreshing it or navigating away, which could interrupt processing. Large files or a busy device may take longer.
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Download and check the result
When processing finishes, click Download next to the file result. Check the filename and output format, then open it in the player or software you plan to use to make sure it meets your needs.
What features can I use?
Convert audio in your browser
Choose a file from your device, set the output, and download the result. Core conversion runs in your browser. No desktop audio software is needed for this workflow.
Save the sound from a video separately
If a video contains an audio track that the tool can read, you can select it and export an audio file. This feature extracts sound; it does not edit the video or remove sound from the video file.
Choose common audio output formats
Common output formats include MP3, WAV, M4A, AAC, FLAC, OGG, Opus, and AIFF. Check what your player, recipient, or next app needs, then choose from the list on the page. Whether conversion succeeds still depends on the source file and browser.
Adjust settings for the selected format
Different formats offer different options, such as bitrate, sample rate, channels, quality, compression level, or bit depth. These settings help you meet file delivery requirements. Keep the defaults if you are unfamiliar with them. The available settings change when you switch formats.
When might you use an audio converter?
Someone needs your recording as an MP3
You already have a recording, but the recipient asks for an MP3 file. Choose your original recording, set the target format to MP3, then download the result and check that the recipient can play it.
You only need the speech or sound from a video
For example, you may want to use speech, music, or background sounds from a video as a separate audio file. Select a video with an audio track and export the format you need. This tool does not transcribe speech or generate new sound.
An editor or collaborator needs a different format
If your next app or collaborator needs a specific format such as WAV, you can try converting it here first. Ask which format and settings they require, then adjust the options actually available on the page.
Your file will not open in another app
Check which formats the target app accepts, then try exporting one of them. Conversion may help you move audio between apps, but it does not guarantee that every source file can be read or converted.
Limits and troubleshooting tips
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Check the source file and the video's audio track
Play the source file on your device first to check that it opens normally. For video extraction, check that the video has an audio track. A video without one cannot provide audio to extract, and a damaged file may not be readable.
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Each format has different options
The Options panel is closed by default, so open it to check the available settings. If a setting is missing, it usually means the selected output format does not offer it. It does not need to be unlocked.
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Large files may need more time and memory
Processing time depends on file size, format, device performance, and browser. Try a smaller file first to check the workflow, and close apps or tabs you do not need to leave more resources for this task.
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Check your connection if processing will not start
On first use, the page may need to load scripts and processing resources. Local browser processing does not mean fully offline use. If the page reports that resources could not load, check your connection and try again.
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Try another available format or browser if conversion fails
After checking that the source file plays normally, try another output format from the list or another browser. Files can use different ways of storing audio, so even files with the same extension are not all guaranteed to convert.
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Changing formats does not automatically improve sound quality
The result depends on the original file, target format, and output settings. Converting MP3 to WAV cannot recover sound details already lost from the source. Do not assume that every conversion is lossless.
How does Audio Converter relate to KikiVoice's AI voice tools?
KikiVoice provides tools for creating and processing audio. AI Voice Cloning is for cloning voices, AI Voice Design is for designing voices, Text to Speech turns text into speech, and AI Voice Changer is for changing voices.
Audio Converter is a separate free audio tool for converting existing files and extracting audio from video. If you want to create a voiceover, clone a voice, or change a voice, choose the relevant KikiVoice feature.
Frequently Asked Questions
How do I extract audio from an MP4 video?
Add the MP4 video, choose the audio format you want, and run the conversion. You can export the audio as MP3, WAV, M4A, AAC, FLAC, OGG, Opus, or AIFF.
What should I do if a video has no audio after conversion?
Check that the original video actually contains an audio track. If the source video has no sound, the converter cannot create audio from it.
Which format should I choose for a smaller audio file?
MP3, AAC, M4A, and Opus are common choices for smaller files. WAV and AIFF are usually larger because they keep more uncompressed audio data.
Will converting audio improve the original sound quality?
No. Conversion changes the format and output settings, but it cannot restore detail that is not present in the original file. Use a higher-quality output when you want to avoid extra quality loss.
What is an online audio converter?
It exports an existing audio file in another audio format. KikiVoice Audio Converter processes files in your browser and can also extract sound from videos that contain an audio track. It does not generate new voiceovers or clone voices.
How do I convert audio to MP3?
Choose the file above, set the target format to MP3, and click the conversion button. When it finishes, download the result next to the file. MP3 is a common output option, but whether a source file can be read and converted still depends on the file, device, and browser.
Which common output formats are available?
Common output formats include MP3, WAV, M4A, AAC, FLAC, OGG, Opus, and AIFF. Choose from the actual list on the page and check that it meets the recipient's requirements. A format appearing in the list does not mean every source file can be converted to it successfully.
Can I adjust output settings, and why are some missing?
Open the Options panel beside the format selector. Depending on the selected format, you may see settings for bitrate, sample rate, channels, quality, compression level, or bit depth. Each format supports different settings, so a missing option does not need to be unlocked. Keep the defaults if you are unfamiliar with the settings.
Are my audio files uploaded to KikiVoice servers?
Audio files are not uploaded to KikiVoice servers, and core conversion runs in your browser on your device. Page scripts and processing resources may still load over the network, so local processing does not mean fully offline use. Processing speed and the experience with large files also depend on your device and browser.
Why does conversion fail, not start, or take a long time?
The source file may be incomplete, its audio may not be readable, the selected conversion may not be compatible, or a large file may need more device resources. Check that the source file plays normally, then try another listed output format or another browser. Keep the page open while it processes. If processing resources fail to load, check your connection and try again.
Where do I download the converted file?
When processing finishes, click Download in that file's result area. Check the filename and target format after downloading, then open it in the player or software you intend to use. If you need another format, choose a different target format and convert again.
Is MP3 to WAV or WAV to MP3 guaranteed to be lossless?
No. Changing formats and settings affects the result, and converting to WAV cannot restore details already lost from the source file. Choose the output format the recipient needs and check how the downloaded file plays.
How do I trim audio or reduce noise after conversion?
Use Audio Trimmer to keep a precise section of audio, or Audio Noise Reducer to reduce background noise in a voice recording. This page handles format conversion and extracting audio from video. Links to the related tools are in the next-step section above.