True Peak Checker
Drop a track to see its sample peak vs inter-sample true peak, whether it's clipping, exact clip timestamps and your headroom to −1 dBTP. Measured in your browser — nothing is uploaded.
Is my song clipping? Sample peak vs true peak
Your DAW's meter usually shows sample peak — the loudest single stored sample. But the real analog waveform passes between those samples, and a converter (or a lossy MP3/AAC encoder) reconstructs peaks that can sit well above the highest sample. That reconstructed level is the inter-sample true peak, measured in dBTP. A master can read −0.1 dBFS on the sample meter and still true-peak clip at +0.5 dBTP once it hits Spotify or Apple Music, adding crackle and distortion that never showed up on your session. This checker upsamples 4× (the ITU-R BS.1770 method) to catch exactly those hidden overshoots, and separately counts runs of samples pinned at full scale — the hard digital clipping that means your mix was already too hot before mastering.
The practical rule for mastering headroom: keep your true peak at or below −1 dBTP for streaming (Amazon Music prefers −2 dBTP). That 1 dB cushion absorbs codec overshoot and keeps transients clean. If this tool shows you're over −1 dBTP, don't just pull the fader — a true-peak limiter reshapes the peaks so you keep loudness while locking the ceiling. That's exactly what TrackGleam's mastering does, and it exports a real, watermark-free WAV without anything leaving your browser.
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FAQ
What's the difference between sample peak and true peak?
Sample peak is the loudest stored digital sample. True peak (dBTP) estimates the real waveform level between samples by upsampling 4× — often higher than any single sample. A file can read −0.1 dBFS yet true-peak clip at +0.6 dBTP, which is why platforms ask for a −1 dBTP ceiling.
How much headroom do I need for mastering?
Keep the true peak at or below −1 dBTP for streaming (Amazon prefers −2 dBTP). That 1 dB absorbs the inter-sample overshoot lossy codecs add during transcoding, so the track stays clean on Spotify, Apple Music and YouTube. Check your loudness too →
Does this upload my file?
No. Your audio is decoded and analyzed entirely inside your browser with the Web Audio API. It never leaves your device.