Half-Step Down Tuner Online

What half-step down tuning is

Half-step down tuning is Eb Ab Db Gb Bb Eb (low to high) — standard EADGBE with every string lowered by exactly one semitone. The relationships between the strings never change, so all of your chord shapes, scale patterns and licks stay identical; the entire instrument simply sounds one fret lower. Guitarists also call this "Eb standard," because the lowest string is now Eb rather than E.

Reading low to high: E→Eb, A→Ab, D→Db, G→Gb, B→Bb, and high E→Eb. Every string moves the same distance, which is what preserves the intervals — the gap between any two strings is exactly what it was in standard tuning. That is why nothing you already know about fingerings has to change.

Why and when to use it

There are three classic reasons to tune down a half step. The first is tone: lowering the whole guitar a semitone gives a darker, slightly heavier sound that many rock and metal players prefer. The second is feel — the reduced tension makes the strings a touch slinkier and easier to bend, which is a big part of why blues and rock lead players from Hendrix onward favored it. The third is vocals: dropping a half step lowers the key of every song just enough to suit a singer whose range sits a little below standard pitch, without forcing the guitarist to relearn anything.

Reach for half-step down when you want a fatter, warmer tone with easier bends, when you are covering a band that recorded in Eb (a long list, from Hendrix to Slash-era Guns N' Roses), or when a vocalist needs the whole song nudged down. Because the fingerings are unchanged, it is the lowest-effort alternate tuning to adopt.

String-by-string change from standard

To reach it from standard tuning, lower every string by one half step: E→Eb, A→Ab, D→Db, G→Gb, B→Bb, and high E→Eb. Work string by string, tuning each down a single semitone until the dial reads the flat target. Because all six move the same amount, there is nothing new to learn — a barre chord at the third fret now sounds a half step lower than usual, but it is still the same shape and the same relative chord.

Songs and artists that use half-step down

• Voodoo Child (Slight Return) — Jimi Hendrix
• Texas Flood — Stevie Ray Vaughan
• Sweet Child o' Mine — Guns N' Roses
• Little Wing — Jimi Hendrix

Hendrix recorded almost his entire catalogue a half step down, and Stevie Ray Vaughan followed suit — much of the slinky, vocal bending in their playing comes directly from the lower tension of Eb standard.

Common Genres

• Blues and rock (Hendrix, Stevie Ray Vaughan)
• Hard rock and metal
• Pop and singer-songwriter (vocal-friendly keys)
• Punk and alternative

Practical tips and common mistakes

• Drop, don't sharpen. Every string comes down to its target, so approach each from below to keep the string settled — sneaking up to the flat note rather than dropping past it.
• Heavier strings help. Because tension drops, very light strings can feel floppy at Eb; many players who live in this tuning move up a gauge to keep the feel tight.
• Re-check intonation. Down-tuning slightly affects intonation on some guitars; if chords sound off above the twelfth fret, a small saddle adjustment may be needed.
• Mind the reference. Set the reference (A4) to 440 Hz below — Eb standard at 440 is different from E standard at 432, and mixing them up will leave you out of tune with recordings.

How to use this tuner

• Click Start Tuner and allow microphone access when prompted.
• Pluck each string in turn — the matching peg below lights up automatically.
• Tap any peg to hear its exact flat target pitch as a reference.
• Lower every string a half step until each dial sits inside the green band, then play a familiar chord to confirm the shapes still feel right.