Free AI music mastering online

Master your track with real AI mastering — no subscription, no credit card. Export a genuine WAV (not an MP3-only preview), with true BS.1770 LUFS and true-peak metering. Built for AI music creators.

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What you get for free

Free online mastering without the usual catches

Most “free” mastering tools hand you an MP3, a watermark, or a subscription wall before you can download anything usable. Quantara's free tier gives you a real WAV master and the same transparent engine paying users get — the only difference is the monthly export count.

Compare the approaches: vs LANDR · vs eMastered · vs BandLab.

How to master a song online for free

When you'd upgrade (honestly)

The free tier is capped at 3 exports per month. If you release a lot, paid plans lift that limit and add higher bit depths. Everything else — the transparent chain, real metering, A/B, per-platform targets — is in the free tier. No feature is paywalled behind “pro-only sound quality” gimmicks.

New to loudness?

Start here: What is LUFS? · True peak explained · RMS vs LUFS.

FAQ

Is Quantara AI mastering really free?

Yes. The free tier gives you 3 real WAV exports every month with no credit card and no subscription. You get the full transparent mastering chain and real BS.1770 metering — not a watermarked or MP3-only preview.

Do I need a subscription to master a song online?

No. You can master and export on the free tier without any subscription. Paid plans (Pro and above) simply lift the monthly export limit and add higher bit depths for people who release a lot.

Is the free export a real WAV or just an MP3 preview?

A real WAV. Many free mastering tools only let you download MP3 (or add a watermark) unless you pay. Quantara's free tier exports a genuine, full-quality WAV master.

What's the catch with free AI mastering?

There isn't a hidden one. The free tier is capped at 3 exports per month; beyond that you upgrade. Everything else — the transparent chain, real metering, loudness-matched A/B, per-platform targets — is available for free.

Is it good for AI-generated music (Suno, Udio, Mureka)?

Yes — Quantara is built for AI music. It has a dynamic EQ suited to already-compressed AI material and dedicated guidance for Suno and Udio tracks.

Open the free Studio →