MP3 to Chords: The 5 Best Tools Compared (2026)

Full disclosure up front

I run mp3chords.com, one of the five tools on this list. I'm not going to pretend otherwise, and I'm not going to pretend the others are bad just because they're competitors. I've used all five, and each one is genuinely good at something. What I want to do here is tell you what each one is actually built for, so you pick the right one instead of the one with the loudest ad copy.

I've been playing guitar for 40 years. What I care about when I test these tools isn't "does it produce a chord symbol" — it's "does it produce the right chord, in the right order, in a format I can actually take to a gig." That's the lens for this whole comparison.

The quick answer

• mp3chords — best if you want lyrics and chords together, free unlimited on-screen use, and you gig with ChordPro/OnSong apps or think in Nashville numbers.
• audio2guitar — best if you want note-level guitar tab with technique markings (bends, slides) and don't mind paying for it.
• Chordify — best for casual strumming along in real time, weakest free tier of the group.
• Moises — best all-around band tool: stems, pitch/key change, chord difficulty levels — but no note-level tab.
• Klangio (Guitar2Tabs) — best if your priority is exporting to Guitar Pro or MusicXML for notation software.

Now the actual breakdown.

mp3chords

mp3chords is built specifically around the workflow of taking a full song — Suno-generated or otherwise — and getting both chords and lyrics out of it, synced together, in a format you can use outside the browser.

What it does well:

• Free tier has no song cap. Unlimited songs on-screen, synced play-along chords, transpose, capo view, sharp/flat toggle, and inline chord editing, all without paying.
• Exports to ChordPro (.cho), OnSong, plain text, and PDF — the only tool here with native OnSong/ChordPro support, which matters if you gig with an app.
• Built-in Nashville Number System view.
• Paste-your-own-lyrics option, so you can skip transcription entirely if you already have the lyrics (this is the reason a lot of Suno users end up here — see our Suno chords guide).
• Pipeline runs Demucs stem separation, three separate chord-detection engines with ensemble voting, and Whisper transcription — five to ten minutes of processing per song, not an instant lookup.

Where it's still catching up: no note-level guitar tab, no Guitar Pro/MusicXML export, no YouTube link input yet. If you need tab with bends and slides, look at audio2guitar or Klangio instead.

Pricing: free on-screen use with no cap. Paid tiers are $9.99 for a 10-download credit pack (credits don't expire) or a Pro plan around $6.99/mo or $49/yr for unlimited downloads, stems, and backing tracks — these are launching soon, so treat availability as "coming shortly" rather than live today.

audio2guitar

The most direct competitor to mp3chords in terms of ambition. audio2guitar goes further than most tools into actual guitar tab — not just chord symbols, but note-level tab with technique annotations like bends and slides, plus word-synced lyrics and stem separation with per-stem MIDI download.

What it does well: genuinely deep feature set — tab, lyrics, stems, MIDI, speed control down to 25%, a free tuner. If you want tab, not just chords, this is the strongest option in the group.

Where it's weaker: no transpose or capo UI as of this writing, no OnSong/ChordPro export, no Nashville numbers, no paste-your-own-lyrics option. And on accuracy specifically — this is the one place I'll cite our own numbers, so take it with the appropriate grain of salt — in a piano-verified benchmark, audio2guitar scored 80% on chord roots and 34% on chord order versus our 91% and 79% respectively. I go through exactly how that test was run in how accurate are AI chord detectors.

Pricing: free for 3 songs, then $9.99 for a 10-song one-time pack, or subscriptions around $8.99/mo or $59.99/yr.

Chordify

Chordify has been around the longest of this group and is built around a simple, real-time strumming experience — chords scroll by as the song plays, and you strum along. It's the tool most casual guitarists have already heard of.

What it does well: simple, fast, works with YouTube links directly, has a mobile app with a tuner.

Where it's weaker: the free tier is the most limited here — transpose, capo view, and speed control are all locked behind premium. No lyrics at all (word-synced or otherwise), no tab, no stems, no OnSong/ChordPro export, no Nashville numbers.

Pricing: subscription-based premium; free tier is functional but light.

Moises

Moises is less a "chord tool" and more a full band-practice app that happens to include chord detection. If your main need is pulling out a bass line, muting the vocal to practice singing, or slowing a song down, Moises is strong. Chords are one feature among many.

What it does well: stem separation is core (not an afterthought), pitch and key change, speed control, and a chord difficulty toggle (easy/medium/advanced) that nobody else in this group offers — genuinely useful if you're teaching or learning.

Where it's weaker: no note-level tab generation (tabs are synced to existing tab data, not generated from audio), no OnSong/ChordPro, no Nashville numbers, no lyrics-paste option.

Pricing: the cheapest subscription in the group at $3.99/mo, with a $9.99/mo Pro tier.

Klangio (Guitar2Tabs)

Klangio's angle is notation software compatibility. If you read music, or you want your chart to land inside Guitar Pro or a MusicXML-based app, Klangio is built for that handoff.

What it does well: exports to both Guitar Pro and MusicXML — the only tool here that does both. Editable tab output.

Where it's weaker: only a 20-second demo before you're into a subscription, no transpose/capo, no lyrics at all, no stems, no OnSong/ChordPro, no Nashville numbers.

Pricing: subscription required beyond the short demo.

How to actually choose

If you write or generate songs (Suno especially) and want a chart with lyrics you can take to a gig app, start with mp3chords — it's free to try and the OnSong/ChordPro export is unique to it (see our Suno to OnSong walkthrough). If you want note-level tab with technique markings, audio2guitar or Klangio. If you want a full practice suite with stems and speed control and don't care about tab, Moises. If you just want to strum along casually and don't mind a locked-down free tier, Chordify.

Try mp3chords free on your own track — no song cap, no signup wall to see your first chart.

FAQ

Which mp3-to-chords tool is most accurate?

Accuracy varies by song complexity, and no tool is perfect. In our own piano-verified benchmark against audio2guitar, mp3chords scored 91% on chord roots and 79% on chord order versus their 80% and 34%. Full methodology is in our accuracy testing article — we'd encourage you to verify claims from any tool, including ours, against your own ear.

Is there a free mp3-to-chords tool with no song limit?

mp3chords offers unlimited songs on-screen for free, with no cap. Chordify's free tier is more limited, locking transpose and capo view behind a subscription. audio2guitar and Klangio both cap or time-limit free use.

Which tool should I use if I need Guitar Pro or MusicXML export?

Klangio is the only tool in this group that exports to both formats. audio2guitar and mp3chords do not currently support Guitar Pro/MusicXML.

Can any of these tools give me lyrics and chords together?

mp3chords and audio2guitar both sync lyrics with chords. mp3chords additionally lets you paste your own lyrics to bypass transcription entirely, which is useful if you already have an accurate lyric sheet (common for Suno users).

Do I need a subscription to use any of these tools?

Not necessarily. mp3chords and audio2guitar both offer one-time credit packs instead of forcing a subscription. Chordify, Moises, and Klangio are subscription-first, though Moises' entry price is low at $3.99/mo.