Set the Starting Tuning
Select the tuning currently on the guitar. Standard E2–A2–D3–G3–B3–E4 is the default, but another preset or a custom starting point can be used.
RONTER AUDIO LAB · GUITAR TOOL
Use this free alternate guitar tuning calculator to compare standard tuning with an alternate tuning string by string. Choose the starting and target notes to see the pitch movement, semitone difference and frequency for every string.
A browser-based instrument utility from Ronter Sound and Ronter Audio Lab.
STRING-BY-STRING CALCULATION
Start with a preset or build your own tuning. The calculator shows how far each string moves from its original pitch and calculates the corresponding note frequencies.
String 6: E2 → D2 Tune down 2 semitones · 82.41 Hz → 73.42 Hz
This calculator compares pitch values. Physical string tension also depends on factors such as string gauge, scale length and string construction, so pitch change alone does not describe the mechanical tension of a guitar string.
SEE WHAT CHANGES BEFORE YOU RETUNE
Alternate tunings can change one string, every string or anything in between. The calculator compares each open-string pitch independently, so you can see exactly which strings stay where they are and which need to move.
Choose a familiar preset or select individual notes to create a custom configuration. The result is calculated locally in your browser and updates without uploading audio or sending a file anywhere.
Select the tuning currently on the guitar. Standard E2–A2–D3–G3–B3–E4 is the default, but another preset or a custom starting point can be used.
Pick Drop D, DADGAD, Open G, Open D, a lowered standard tuning or create your own combination of six pitches.
Each row shows the original note, target note, semitone difference and target frequency. An unchanged string is clearly marked so you can focus on the strings that actually move.
Use the Copy Results button to create a compact text version of the tuning and its string-by-string changes for practice notes, rehearsal preparation or your own reference.
MORE THAN A LIST OF LETTERS
A tuning name tells you the destination, but it does not always make the movement obvious. Comparing the original and target pitches shows whether a string moves up, moves down or remains unchanged.
Drop D is an easy example. From standard tuning, only the lowest string changes: E2 becomes D2. The other five strings stay at their standard pitches. More extensive alternate tunings can rearrange several strings, so a string-by-string view becomes more useful.
When you later develop those tunings into playable parts, the instrument recording guide provides a broader look at preparing instruments for recording.
WHAT THE NUMBERS MEAN
The semitone value tells you the pitch distance between the starting note and the target note. A negative value means the target is lower; a positive value means it is higher.
Every calculated pitch is also displayed in hertz. The calculator uses equal-tempered pitch values referenced to A4 = 440 Hz, giving a numeric view of the destination pitch.
Octave numbers matter. E2 and E3 share the same note name but are an octave apart, so the calculator includes the octave with every selectable pitch.
CUSTOM TUNINGS
Presets are convenient when you already know the tuning you want, but experimentation often starts somewhere less defined. Selecting Custom lets you assign the starting and target pitch of every string individually.
That makes the calculator useful when testing a tuning derived from a chord, drone, riff or particular register rather than choosing a conventional preset. You can change one note, calculate the result and continue adjusting the tuning until the open strings form the pitch collection you want to explore.
This kind of experimentation can be paired with other recording, mixing and ear-training tools when you want to move between instrument decisions and listening practice.
Think of alternate tuning as six individual pitch decisions. A tuning name is convenient shorthand, but the string-by-string changes explain what actually happens to the instrument's open notes.
FROM CALCULATION TO THE INSTRUMENT
Compare the current tuning with the target so you know which strings need to move and in which direction.
Work through the six strings systematically rather than trying to remember the entire tuning at once.
The relationship between the open pitches is one of the defining characteristics of an alternate tuning.
Chords and scale patterns may produce different notes after the open strings change. Treat the new tuning as a fresh map rather than assuming every familiar shape behaves identically.
ONLINE TUNING WORKSPACE
The calculator can serve as a quick alternate guitar tuning tool for established tunings or as a workspace for designing your own. It keeps the comparison visible so you do not have to translate note names into pitch movement manually.
Some alternate tunings preserve most of standard tuning. Drop D lowers the sixth string while strings five through one remain A2, D3, G3, B3 and E4. The calculator makes that difference visible immediately.
This is useful when moving back and forth between tunings during practice: the unchanged rows show what can be left alone.
When every string is lowered by the same interval, the results show the repeated movement across the guitar rather than presenting the target tuning as an isolated list.
Open tunings rearrange several strings to create a different relationship between the open notes. Compare the result before exploring new chord shapes, drones and melodic positions.
ARRANGEMENT AND PRACTICE
Changing the open strings changes the pitch produced by familiar fret positions on those strings. It can make previously awkward note combinations easier to reach, create useful open-string drones or simply encourage a player to approach the neck differently.
If the experiment becomes part of a song, it can help to document the final tuning before rehearsing or tracking. The first-time recording studio guide covers other practical preparation that can happen before a session.
For projects where the arrangement is still developing, the song demo production page looks at the next stage of turning an idea into a recordable song.
QUICK QUESTIONS
Enter the current and target pitch for the string. The Change column reports the signed semitone difference.
Compare Standard with Drop D. The calculator identifies the sixth string as changed while the other five remain at their original pitches.
Yes. Select Custom and choose an individual pitch for each of the six starting or target strings.
Yes. Every target note is converted to its equal-tempered frequency using A4 = 440 Hz as the reference.
Yes. The starting tuning does not have to be standard. Choose any available preset or custom combination on both sides.
No. The calculator reports pitch movement. Actual string tension also depends on the physical string and instrument, including gauge, construction and scale length.
HEAR THE RESULT IN CONTEXT
A numeric comparison is most useful when you return to the instrument and listen to what the new open-string relationships do to actual music. Try familiar chords, build new voicings, let open strings ring against fretted notes and notice how the available register changes.
Guitar parts also behave differently once they sit beside drums, bass, vocals and other instruments. The Interactive Online Audio Mixer offers a different kind of browser-based practice for exploring balance, while the Mixer Console Simulator provides another way to experiment with signal and mix decisions.
When the goal becomes a finished production rather than practice, mixing and mastering addresses how recorded parts are shaped together after tracking.
Calculate the tuning, move to the guitar and discover what the new open pitches make possible.
Try chord voicings, drones, riffs and melodic positions that take advantage of the altered string relationships.
Different musical styles may use guitar register and open strings in different ways. Browse music genre recording or the more guitar-oriented Blues and Country recording material for additional context.
KEEP EXPLORING
Alternate tuning is only the starting point. Once the six open pitches are established, the useful work happens on the instrument: learning where notes moved, finding new shapes and deciding whether those sounds support the music you are making.
For musicians preparing material for a session, the recording confidence guide explores the performance and preparation side of studio work. You can also browse the broader recording, mixing and mastering services section when a practiced arrangement is ready to move toward production.
Explore 168 free browser-based tools for musicians, singers, producers, engineers and creators. Open a category to find your next tool.