Audio Metadata Extractor: Duration, Channels and Bitrate Estimate
Inspect audio duration, channels, decoded sample rate, and estimated bitrate with FindUtils. Learn which fields require a separate tag or codec reader.
Drop your audio file here or click to browse
Supports all common audio formats
How to Extract Audio Metadata
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Upload Your Audio File
Drag and drop your audio file onto the upload area, or click to browse your device. The tool accepts MP3, WAV, FLAC, OGG, AAC, M4A, and other common audio formats. -
Wait for Instant Analysis
The tool analyzes your file entirely in the browser using the Web Audio API. Processing takes less than a second for most files, with no server upload required. -
Review Technical Details
View the complete metadata report including duration, sample rate, number of channels, bitrate, codec type, MIME type, and file size. Each property is displayed in a clear, organized layout. -
Copy or Reset
Click Copy All to copy every metadata field to your clipboard in a formatted text block. Use the Reset button to analyze another file.
Guides and articles
Read instructions and examples for this tool.
Audio Resampler: Change Sample Rate and Export WAV
Resample supported audio to a selected sample rate with FindUtils. Compare 44.1 kHz and 48 kHz, check WAV output, and understand conversion limits.
How to View Media File Info Online Free Without Uploading
Inspect any video or audio file in depth with the free Media Info Viewer. See every track, codec and property in your browser with no upload.
Common Use Cases
Podcast Production
Verify that exported podcast episodes meet platform requirements for sample rate (44.1 kHz or 48 kHz), bitrate (128 kbps+), and channel configuration (mono or stereo) before uploading to hosting services.
Music Mastering QA
Confirm that final masters match the intended specifications. Check that WAV files are truly 24-bit/96 kHz, or that MP3 exports hit the target 320 kbps bitrate before distributing to streaming platforms.
Troubleshooting Playback Issues
Diagnose why an audio file will not play in a particular application. Mismatched sample rates, unsupported codecs, or unexpected channel counts are common culprits that metadata inspection reveals instantly.
Archival and Cataloging
Build a detailed inventory of an audio library by extracting technical specs from each file. Useful for librarians, sound designers, and anyone managing large collections of recordings.
Why use our Audio Metadata Extractor?
Our audio metadata extractor reveals all the technical details hidden in your audio files. This information is essential for audio engineers, podcasters, and anyone who needs to understand their audio files. Extract information including sample rate, number of channels, duration, bitrate, and file format. All data is displayed in an organized, easy-to-read format. All analysis happens locally in your browser. Your audio files are never uploaded anywhere, ensuring complete privacy.
The Audio Metadata Extractor is a browser-based tool that reads the technical properties embedded in any audio file. Drop an MP3, WAV, FLAC, OGG, AAC, or M4A file into the tool and instantly see its sample rate, bitrate, duration, channel count, codec, and file size. Because the analysis runs entirely in your browser using the Web Audio API, your files are never uploaded to a server, making this one of the most private ways to inspect audio metadata online.
Audio metadata matters more than most people realize. Podcast hosts enforce specific bitrate and sample-rate requirements. Streaming platforms reject files that do not meet their codec or channel specifications. Mastering engineers need to verify that exported files match the intended quality settings before delivery. Instead of opening a full DAW or installing desktop software, you can answer all of these questions in seconds with this tool. If you also need to inspect video files, try the Video Metadata Extractor, or use the Media Info Viewer for a combined overview of any media file.
After reviewing your metadata, you might decide the file needs adjustments. The Audio Format Converter can switch between formats, and the Audio Resampler lets you change the sample rate without re-encoding the entire file. For verifying file integrity after transfers, the File Hash Calculator generates checksums you can compare against the original.
How it compares
Most audio metadata tools fall into two categories: heavyweight desktop applications like MediaInfo or FFprobe that require installation, and online services that upload your file to a remote server for analysis. The FindUtils Audio Metadata Extractor takes a third approach by running entirely in the browser. There is nothing to install, no account to create, and no file ever leaves your device. For quick checks of sample rate, bitrate, channels, and duration, this client-side workflow is faster and more private than either alternative.
Desktop tools remain the better choice when you need to inspect deeply nested container metadata, embedded album art, or dozens of files in batch. But for the most common task, verifying the core technical specs of a single audio file, a browser-based extractor delivers the answer in seconds without any setup overhead.
Tips for Working with Audio Metadata
- Always check sample rate and bitrate before converting formats to avoid unnecessary quality loss.
- Stereo files (2 channels) are standard for music, while mono (1 channel) is often preferred for spoken-word podcasts to reduce file size.
- A bitrate of 128 kbps is generally acceptable for speech; 256-320 kbps is recommended for music in lossy formats like MP3.
- Lossless formats such as WAV and FLAC preserve full audio quality but produce significantly larger files than MP3 or AAC.
- If your file shows unexpected metadata values, it may have been re-encoded multiple times, which degrades quality with each pass.
Frequently Asked Questions
What information can I extract?
You can view file name, size, duration, sample rate, number of channels (mono/stereo), bitrate, and MIME type.
Why would I need audio metadata?
Metadata helps verify audio specifications, troubleshoot playback issues, ensure compatibility, and understand quality settings.
Are my files uploaded to a server?
No, all analysis happens entirely in your browser. Your files never leave your device.
Can I export the metadata?
Yes, use the 'Copy All' button to copy all metadata to your clipboard in a formatted text format.
What audio formats are supported?
We support most common formats including MP3, WAV, OGG, FLAC, AAC, and M4A.
What is sample rate and why does it matter?
Sample rate is the number of audio samples captured per second, measured in Hertz (Hz). A rate of 44,100 Hz (44.1 kHz) is CD quality, while 48 kHz is the standard for video production. Higher sample rates capture more detail but produce larger files.
What is the difference between bitrate and sample rate?
Sample rate determines how many snapshots of the audio waveform are taken per second, while bitrate measures how much data is used per second of audio. A higher bitrate generally means better quality in compressed formats like MP3, whereas sample rate affects the frequency range that can be reproduced.
Can I check metadata for multiple files at once?
The tool currently analyzes one file at a time. Drop a new file or click Reset to inspect another. For batch analysis of many files, a desktop tool like MediaInfo may be more efficient.
Does this tool show ID3 tags like artist and album?
This tool focuses on technical metadata such as sample rate, bitrate, channels, and duration. For ID3 tag editing including artist, album, and artwork, a dedicated tag editor is recommended.
Is there a file size limit?
There is no strict file size limit since everything runs in your browser. However, very large files (over 500 MB) may take longer to decode depending on your device's available memory and processing power.