Check audio quality, use an audio spectrum analyzer online, and get detailed metrics instantly
Professional audio analysis tool that works 100% in your browser. Fast, secure, and completely free.
🔒 Privacy First: Your audio files never leave your device. All analysis happens locally in your browser. Trusted by audio professionals worldwide.
Drag & drop your audio file here
or click to browse
Supported: MP3, WAV | Max file size: 10MB | Max duration: 180 seconds
Processing Audio
Analyzing your audio file...
--
--
--
--
Press play to see the spectrum analyzer online visualize live frequency energy in real time
--
--
--
--
Upload a file to see recommendations
Highest momentary level; helps detect clipping risk.
Average loudness over time; closer to perceived volume.
Peak-to-RMS ratio; indicates punch and dynamics.
Signal-to-noise ratio; higher means cleaner audio.
Channel alignment; poor phase reduces mono clarity.
All audio analysis happens in your browser. Your files never leave your device, ensuring complete privacy and security.
Get studio-grade analysis including a spectrum analyzer online, loudness, stereo width, and quality metrics suitable for professional use.
No registration, no hidden fees, no limits. Analyze as many audio files as you need, absolutely free forever.
Welcome to the most comprehensive free audio analyzer available online. Whether you're a music producer, podcast creator, audio engineer, or content creator, our online audio analyzer provides professional-grade audio file analysis directly in your browser. Analyze MP3 and WAV files instantly to check audio quality, examine frequency spectrum, measure loudness levels, and get detailed technical insights.
An audio analyzer is a professional tool that examines audio files to extract meaningful information about their technical properties, quality characteristics, and sonic profile. Our audio analyzer online measures critical metrics including loudness levels (peak amplitude, RMS), frequency distribution (bass, mid, treble balance), stereo imaging (width and phase correlation), dynamic range, signal-to-noise ratio, and quality indicators like clipping detection. Unlike desktop software, our free audio analyzer works entirely in your browser with no installation required.
A spectrum analyzer online shows how energy is distributed across frequencies in real time. This online spectrum analyzer helps you spot muddy lows, harsh highs, and midrange build-up so you can make confident EQ decisions. Our audio spectrum analyzer online pairs a live frequency display with actionable measurements for faster mix and mastering checks.
Sometimes called an AI audio analyzer, this tool uses rules-based signal analysis to generate fast, practical recommendations. You get smart insights without uploading files or waiting on servers.
| Feature | Our Audio Analyzer | Desktop Software |
|---|---|---|
| Installation Required | ✓ No - Works in Browser | ✗ Yes - Download & Install |
| Processing Speed | ✓ Instant Analysis | ~ Varies by Software |
| Privacy | ✓ 100% Private - No Upload | ~ Depends on Software |
| Cost | ✓ Free Forever | ✗ $50-500+ |
| Works on Mobile | ✓ Yes - Any Device | ✗ Desktop Only |
| Real-Time Spectrum Analyzer | ✓ Built-in Spectrum Analyzer Online | ~ Add-on or separate tool |
| Updates | ✓ Always Latest Version | ✗ Manual Updates Required |
Our audio analyzer online free is trusted by professionals for various audio production needs:
Traditional audio analysis software requires installation, takes up disk space, and often comes with expensive licensing fees. Our free audio analyzer online offers several compelling advantages:
Peak amplitude is the maximum level your audio reaches. For digital audio, this should stay below 0 dBFS to prevent clipping and distortion. Our audio analyzer shows you exactly where your peaks are and warns if they're too high.
RMS (Root Mean Square) represents the average loudness of your audio. This is more representative of perceived loudness than peak levels. Professional mixes typically have RMS levels between -12 dB and -6 dB.
Dynamic range is the difference between the loudest and quietest parts of your audio. Higher dynamic range means more variation in volume, which can sound more natural and less fatigued. Our audio quality checker helps you find the right balance.
Stereo width measures how spread out your audio sounds in the stereo field. Wider stereo images sound more spacious, while narrower images sound more focused. Our analyzer helps you check if your stereo width is appropriate for your content.
Our online audio analyzer supports the most popular audio formats:
Different streaming platforms have different loudness requirements. Use our audio analyzer online to check if your audio meets these standards:
An audio analyzer turns a sound file into numbers and pictures you can act on. Instead of guessing why a track sounds thin, muddy, or too quiet, you can see it — the frequency balance across bass, mids and treble, the loudness in LUFS, the true peak level, and how wide the stereo image sits. Drop in any MP3 or WAV and the analysis appears instantly, entirely in your browser.
Reading the numbers is step one; fixing them is step two. If the analyzer shows dead air dragging the loudness down, remove the silence. If the file is bigger than it needs to be for its quality, run the MP3 compressor. And if you're building something new from scratch, our AI jingle maker outputs broadcast-ready audio you can measure right here.
Every reading on this page is a diagnosis waiting for an action. Here is what each one is telling you, what a healthy value looks like, and what to do when it isn't one.
| Reading | What it measures | Healthy range | If it's out of range |
|---|---|---|---|
| Peak (dBFS) | The single loudest sample in the file | −1 dBFS or below | Above −1, lossy encoders can push it over 0 and distort. Pull the whole file down with the normalizer. |
| RMS (dBFS) | Average energy — closer to how loud it feels | −12 to −6 for music; −20 to −16 for speech | Too low and it sounds weak next to everything else; too high and it has already been squashed. |
| Crest factor (peak − RMS) | How much dynamic range is left | 10–14 dB for music, 12–18 dB for spoken word | Under about 8 dB means over-compressed and fatiguing; over 20 dB means the quiet parts will disappear in a car or a club. |
| Clipping detection | Consecutive samples pinned at full scale | Zero | Any clipping is permanent. Re-export from the source at a lower level — no amount of processing recovers it. |
| Stereo phase correlation | How alike the two channels are | +0.3 to +1.0 | Negative values mean parts of the mix cancel when summed to mono — which is what a phone speaker, a club PA and most smart speakers do. |
| Sample rate & channels | How the file was captured or exported | 44.1 or 48 kHz, stereo | A 22 kHz or 8 kHz file has lost its top end for good. A "stereo" file with identical channels is mono in a bigger container. |
Platform targets like Spotify's −14 are stated in LUFS, and LUFS is not the same measurement as the RMS figure on this page. Two things separate them, both defined in ITU-R BS.1770: K-weighting, a filter that discounts deep bass and lifts the upper mids to match how hearing works, and gating, which throws away the quiet passages before averaging so silence cannot drag the number down.
In practice, for a dense, continuous mix the two land within a couple of dB of each other, and comparing RMS between two versions of the same material is a perfectly good way to tell which is louder. For sparse material — a voiceover with pauses, an ambient piece — they diverge badly: the gate ignores the gaps, so the gated LUFS reading is meaningfully higher than an ungated average. If you need to hit a platform number exactly, measure with a gated LUFS meter; use this page to see the shape of the file and catch the problems that stop it sounding right in the first place.
The spectrum display is a frequency analyzer: it shows how much energy sits in each band. What each band does, and what too much of it sounds like:
That last one is the most useful diagnostic on the page: a hard shelf in the spectrum at 15–16 kHz is the fingerprint of a 128 kbps MP3, which tells you the "high quality" file you were sent is a re-encode of something lossy. No processing brings that back — go and find the original.
For speech work, the practical target is simple: a clean voiceover reads about −16 dBFS RMS with peaks at −3 dBFS or lower, a crest factor in the low teens, and nothing of interest below 80 Hz. If yours does not, the normalizer, the silence remover and the trimmer between them fix most of it, free, before you ever open a DAW.
Frederick — founder of AI Jingle Maker and a professional voiceover artist for the past 25 years, working from London. He builds the tools on this site, writes these pages, and still records and mixes the handcrafted jingle packages himself in FL Studio using his own library of music and effects. There is no content team here: if something on this page is wrong, it is his mistake to fix, and you can reach him directly.
Radio World profiled him and these tools in its News Makers section — Using AI to Offer a Big-Market Sound on a Small-Market Budget (25 July 2026).
Yes, our audio analyzer is completely free to use. There are no hidden fees, no registration required, and no limits on how many files you can analyze. You can analyze as many audio files as you need without any cost.
Our audio analyzer supports MP3 and WAV files, which are the most popular audio formats. Simply upload your MP3 or WAV file and start analyzing immediately.
Absolutely. All audio analysis happens directly in your browser - your files are never uploaded to our servers. This means your audio files remain completely private and secure on your device.
Our audio analyzer provides comprehensive metrics including: loudness analysis (peak amplitude, RMS, dynamic range), frequency analysis (bass, mid, treble distribution), stereo analysis (stereo width, phase correlation), and quality metrics (SNR, clipping detection, overall quality score).
Yes! Our audio analyzer provides studio-grade metrics suitable for professional music production, podcast editing, mastering, and quality control. Many audio professionals use it for quick analysis and quality checks.
Yes, our audio analyzer is fully responsive and works on smartphones and tablets. You can analyze audio files on iOS and Android devices directly in your mobile browser.
You can analyze audio files up to 10MB in size with a maximum duration of 180 seconds (3 minutes). This covers most audio clips for music, podcasts, sound effects, and audio projects.
Our audio analyzer uses industry-standard algorithms and provides professional-grade accuracy for all metrics. The analysis is comparable to desktop audio analysis software and suitable for professional use.
A waveform shows amplitude over time, while a spectrum analyzer shows frequency energy across the sound. Using both helps you see timing, dynamics, and tonal balance.
A real-time spectrum analyzer online visualizes frequencies as your audio plays in the browser, making it easy to spot bass, mid, and high energy instantly without uploading files.