How to Tune a Guitar Down
Updated Nov 12, 2026 · By 
Jonah Mercer · Editorial policy
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Tuning down means lowering every string by the same amount. From standard tuning, E, A, D, G, B, E, a semitone down gives Eb, Ab, Db, Gb, Bb, Eb, and a tone down gives D, G, C, F, A, D. A chromatic tuner shows each new note as you turn the pegs.
Start from standard tuning
Check that the guitar is in standard tuning: E, A, D, G, B, E. Use a chromatic tuner and pluck each string, reading the note the tuner shows. If a string is off, bring it to its standard note before you change anything, so you know where each string starts.
Choose how far down to tune
Decide how far down to go before you touch a peg. A semitone down moves every string to Eb, Ab, Db, Gb, Bb, Eb. A tone down moves every string to D, G, C, F, A, D. Every string moves by the same amount, so the pattern of notes stays the same at the lower pitch.
Use chromatic mode on the tuner
Set the tuner to chromatic mode, since a guitar mode is built for standard tuning. A chromatic tuner reads any note, so it shows Eb, Db and the other lowered notes as you tune. The KLIQ and the Snark SIL-RED list chromatic mode, and the KLIQ also lists an octave display.
Lower each string to its new note
Work through the strings and loosen each peg slowly until the tuner reads the new note. Tune the low E string down to Eb for a semitone, or to D for a tone, then do the same for the rest of the strings. Watch the tuner as you turn the peg, and stop as soon as it reads the note you want.
Check the octave as you tune
Tuning down drops each string by a small amount, so check the tuner reads the note in the right octave. The KLIQ lists an octave display that shows which octave you are tuning in. If the octave looks wrong, loosen the string and bring it back to the note in the right octave.
Recheck the strings after tuning down
Pluck each string again after you finish, since a string can shift as you tune the rest. If a string reads sharp, loosen it below the note and bring it back up. If a string reads flat, tighten it up to the note. Check the strings again after a short pause, then tune any string that has moved.
What you need
KLIQ UberTuner-MAX USB Rechargeable Clip On Guitar
A rechargeable clip-on chromatic tuner with an octave display, vibration-based pitch detection and USB charging.
- Chromatic mode
- Rechargeable
- Tuner type: Clip On
Snark SIL-RED Silver Snark Chromatic Tuner Red
A clip-on chromatic tuner with a high-resolution display that rotates 360 degrees.
- Chromatic mode
Snark ST-8HPT High Precision Rechargeable Clip-On Tuner
A rechargeable clip-on tuner with a bright screen, pitch calibration and an anechoic sound shield that keeps room noise out.
- Rechargeable
- Tuner type: Clip-On
These come from our ranked list Best Tuners, which compares them spec by spec.
Frequently asked questions
Why tune a guitar down?
Tuning down lowers the pitch of the guitar, so the strings sit at lower tension and the guitar sounds lower. The notes stay in the same pattern, Eb, Ab, Db, Gb, Bb, Eb for a semitone down, so the guitar stays in tune with itself.
Do I need a chromatic tuner to tune down?
Yes. A chromatic tuner reads any note, so it shows the lowered notes as you tune each string. The KLIQ and the Snark SIL-RED list chromatic mode. A tuner set to guitar mode is built for standard tuning, so use chromatic mode for the lowered notes.
What if a string reads sharp after tuning down?
Loosen the string until the tuner reads below the target note, then tighten it back up to the note. Tuning up to the note keeps the string at pitch. Check the string again after you move to the next string.
What calibration should my tuner use?
A440 is the standard reference pitch. The KLIQ lists a calibration range of 430 to 450 Hz, and the Snark ST-8HPT lists pitch calibration at 432 and 442 Hz. Leave the calibration at A440 unless you need to match another instrument.
Ranked guitar tuners lists
More how-to guides
Product details come from each Amazon listing and can change. Check the listing before you buy.