Free audio tools

Finish a song from its stems, then check the result — loudness, peaks, dynamics, stereo, tempo, AI artifacts. Drag a file and get a real answer. 100% in your browser · nothing is uploaded.

Make a song

Mix Vocals Over a BeatLine up a vocal take with its beat, mix, then master it Music VisualizerTurn a song into an MP4 clip for Reels, TikTok or Shorts

Loudness & peaks

Loudness Penalty CalculatorHow much each platform turns your track down What LUFS Should I Master To?Decisive target per platform + genre Streaming Loudness TargetsEvery platform’s LUFS/true-peak + check yours True-Peak & Clipping DetectorClipping + inter-sample peaks + headroom Loudness NormalizerNormalize to −14 LUFS + download WAV

Release checks

Release-Ready GraderA–F “can I release this?” scorecard Dynamic Range MeterHow squashed is your master? MP3-vs-WAV Cutoff CheckerIs your top octave missing? BPM FinderTap or drop — instant tempo Song Key FinderDetect musical key + Camelot code

Tone, stereo & AI music

Reference Tonal-BalanceCompare your mix to a pro reference Mono Compatibility CheckerDoes your low end survive in mono? Does Your Song Sound AI?AI-tell score for Suno/Udio tracks Spectrum AnalyzerSee your track’s frequency balance Stereo Width & Phase MeterPhase correlation + mono safety

Files & format

WAV ↔ MP3 ConverterConvert audio, nothing uploaded Audio File AnalyzerSample rate, bit depth, bitrate, LUFS

Why these are different

Most free audio checkers upload your file to a server. These don't — every measurement runs locally in your browser with the Web Audio API, using the same analysis engine as TrackGleam's mastering app, so what a tool reports is exactly what you get when you master. No signup, no watermark, no upload.

Found a problem? Every tool links straight into TrackGleam, where you can master your track free and download a streaming-ready WAV — with an optional AI-tuned master for $1.99.