• 🪕 Online Banjo Tuner

    Tune your banjo online using your device's microphone. Choose a common banjo tuning, pluck one open string at a time, and see whether the detected pitch is flat, sharp, or in tune.
    Open G is one of the most common 5-string banjo tunings. Select another tuning when your song or banjo setup requires it.
    A4 = 440 Hz is the most common modern reference pitch.
    Open Strings
    Click a string to select it as your target. On a 5-string banjo, the short 5th string is normally the high drone string.
    Select a string or start the tuner and pluck one open banjo string.
    Detected Note
    —
    — Hz
    Selected String: —
    Waiting for a string
    −50¢ Flat In Tune +50¢ Sharp
    0 cents
    Banjo Reference Tones
    Select a string below to hear its target pitch. Keep your device volume comfortable.
    Microphone Note: Your browser must allow microphone access for live tuning. Pluck one open string at a time and let the note ring clearly. Sympathetic vibration from other banjo strings, background music, speech, or room noise can make pitch detection less stable.
    How does the Online Banjo Tuner work?

    The tuner analyzes sound from your microphone and estimates the fundamental frequency of the vibrating banjo string. That frequency is compared with equal-tempered musical notes using the selected concert pitch.

    The meter displays the difference in cents. A negative reading means the note is flat, while a positive reading means it is sharp.
    Tip: Make small tuning-peg adjustments and approach the target pitch gradually. After tuning every string, check them all again. Changes in string tension, bridge movement, new strings, and temperature can cause the other strings to shift slightly.

  • An Online Banjo Tuner helps you tune a banjo directly through your device's microphone. Choose your banjo tuning, pluck one open string at a time, and the tuner detects the note's frequency and shows whether the string is flat, sharp, or in tune.

    This tuner supports several common setups, including 5-string Open G, Double C, Sawmill/Modal, Open D, plectrum banjo tuning, and tenor banjo tuning.

    5-String Banjo Open G Tuning

    One of the most common tunings for a 5-string banjo is Open G, written:

    gDGBD

    The lowercase g represents the short 5th string, which is tuned higher than several of the full-length strings.

    At A4 = 440 Hz, the open strings are approximately:

    5th String — G4 = 392.00 Hz
    4th String — D3 = 146.83 Hz
    3rd String — G3 = 196.00 Hz
    2nd String — B3 = 246.94 Hz
    1st String — D4 = 293.66 Hz

    Strumming the open strings in this tuning produces a G-major harmony, which is one reason Open G is widely used in bluegrass and other 5-string banjo styles.

    Double C and Sawmill Tuning

    The tuner also includes Double C tuning: gCGCD.

    Double C is widely associated with old-time banjo playing and can be useful for tunes centered around C.

    Sawmill or Modal tuning: gDGCD changes the second string from B to C compared with Open G. This creates a more open, modal quality and is commonly associated with certain old-time and modal tunes.

    Open D Banjo Tuning

    The included Open D tuning is:

    f♯DF♯AD

    This creates a D-major harmony when the open strings are played together.

    Alternate banjo tunings are useful because they can change available drone notes, chord shapes, fingering patterns, and the overall resonance of the instrument.

    Tenor and Plectrum Banjo

    Not every banjo has five strings.

    The tuner includes Plectrum Banjo C–G–B–D, a common tuning for four-string plectrum banjo.

    It also includes Tenor Banjo C–G–D–A, a common fifths-based tuning for tenor banjo.

    Tenor banjos can also be played in other tunings, including Irish-style G–D–A–E, so always confirm the intended tuning for your particular instrument and playing style.

    How to Use the Online Banjo Tuner

    Choose your tuning and press Start Microphone Tuner. Allow microphone access when your browser requests it.

    Pluck one open string and let it ring clearly.

    The tuner displays the nearest detected note, its frequency in Hertz (Hz), and its tuning difference in cents.

    If the string is flat, gradually tighten it to raise the pitch.

    If the string is sharp, gradually loosen it to lower the pitch.

    A reading close to 0 cents means the string is close to the target pitch. This tuner considers approximately ±5 cents to be in tune.

    Why Banjo Tuning Can Be Tricky

    A banjo can produce a complex sound with strong overtones, and its other strings may vibrate sympathetically when one string is plucked. This can occasionally confuse microphone-based pitch detection.

    For a clearer reading, pluck one string at a time and lightly mute strings you are not tuning if necessary.

    The banjo bridge is also movable, unlike a permanently fixed guitar bridge. If the open strings are perfectly tuned but notes become increasingly sharp or flat as you move up the neck, bridge position and intonation may need to be checked.

    Use the Reference Tones

    Each open string includes a reference tone. Press the appropriate note to hear its target frequency, then try to match that pitch with your banjo.

    Using both your ears and the visual tuner can help develop stronger pitch recognition over time.

    New Banjo Strings May Need Repeated Tuning

    Fresh strings often stretch during their first playing sessions and may repeatedly drift flat.

    Tune them gradually, play for a while, and check them again. As the strings settle, tuning should generally become more stable.

    Tip: After tuning all of your open strings, check the banjo's 12th-fret notes or harmonics against the corresponding open strings. If the open strings are in tune but fretted notes are consistently sharp or flat higher up the neck, the issue may involve bridge placement or intonation rather than the tuning pegs.

    Related Pages:

    What Instrument Should You Play? Several Choices That May Fit Your Style

    The Top Instruments To Collect As A Hobby