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A banjo tuner that shows you the peg, not just the letter
You pluck a string, the needle says G, and you still are not sure which peg to turn. On a five-string banjo in open G, G and D each show up twice at different octaves, and the short fifth string has its own peg down the neck. Clip-ons and generic apps handle the pitch fine; they just do not map that pitch to the hardware in front of you. This online banjo tuner is built around the headstock instead: pluck once, read the cents gauge, and see which button matches the string you are on. Pick open G for bluegrass, or switch to tenor C-G-D-A or plectrum C-G-B-D if that is what you play. No download, no account—open the page, allow the mic, and go.
How is a banjo tuned?
Most five-string banjos use open G: fifth string G, fourth D, third G, second B, first D (high to low in pitch: G-D-G-B-D from the first string up). You turn each tuning peg until the string matches the target note. Four-string tenor banjos are often strung C-G-D-A like a viola; plectrum banjos commonly use C-G-B-D. The notes are not exotic—the friction is keeping track of which peg belongs to which string while you are mid-turn. That is especially true when two strings share a letter name and your tuner does not tell you which one it heard.
Here the layout mirrors the instrument. Buttons sit where the pegs sit on the graphic, including the fifth-string peg on the neck in open G mode. Tap a button if you want a reference pitch in your headphones; enable loop playback if you prefer to tune by ear and use the meter as a check. A semicircular gauge above the headstock shows the note, frequency, and cents offset in real time. Drift too far and a plain hint tells you to tighten or loosen—useful when you are halfway through a peg rotation and cannot remember which way you last went. When a string settles, its button turns green and stays green until you switch the mic off, so you can capo, grab a snack, or talk to the guitar player without losing your place.
Easy to pick up
One microphone button, one tuning-mode menu, peg buttons that match the photo. Flat and sharp hints spell out what to do with the peg—you are not interpreting needle physics on your first day with the instrument.
Visual progress on the headstock
Amber marks the string you are working toward; green means that peg has locked in. You see a checklist on the graphic instead of holding five string names in your head while the banjo rings.
Accurate enough to trust
Pitch tracking is scoped to banjo range, with cents readout fine enough that small peg moves show up on the gauge. Reference tones on each peg let you cross-check by ear when the room is noisy.
What makes this banjo tuner different from a generic chromatic app
Plenty of tuners name a note. Fewer tie that note to the peg in your hand, tell you which way to turn, and let you see at a glance which strings are done.
Visual, accurate, and low-friction by design
The gauge answers how far off you are; the headstock answers which string you are on. Detection focuses on the frequencies banjos actually produce, including the low fourth string D and the high fifth-string G, rather than treating every instrument like a guitar. Green peg latches give you a visual done list; optional looped reference tones support ear tuning without a second device. Everything runs in the browser—your playing stays on your machine.
- Headstock peg map for 5-string open G, plus tenor and plectrum presets in the tuning menu.
- Live cents gauge with note name and frequency—readable while you pick, not only on a hard attack.
- Plain-language flat/sharp hints when you are close but not there yet.
- Reference tone on each peg button; loop playback for slow turns after a string change.
- Fifth-string peg graphic in open G mode so the short string is not an afterthought.
- Works on phone or laptop when you forgot the clip-on at the jam.
How to tune a banjo with this page
Five minutes before the jam starts
The room is already loud. Run through your strings once with the mic on; the green pegs are a checklist you can trust even when you cannot hear yourself think.
First lesson on a rental banjo
The student knows the note names but not the peg map—especially which G is which. Point at the headstock buttons while they turn; it beats drawing peg diagrams on a whiteboard every week.
After swapping to a new fourth string
Stretch, tune, play, tune again. Loop the reference tone on that peg while you turn in quarter steps; the gauge tells you when you have actually arrived, not when the string merely stopped squealing.
Where a browser tuner earns its keep
Not paid endorsements—just situations banjo players run into.
I clip a tuner on the bracket at home. On the road it is just my phone. This one actually tells me flat or sharp in words, and the peg picture saves me from tuning the wrong D string when I am half awake at a festival camp.
Tom H.
Bluegrass jam · 5-string banjo
"I make students watch the cents number while they learn to hear beats. The green lights are a cheat sheet I do not have to apologize for—they still have to turn the peg themselves."
Sarah L.
Banjo teacher / Community music school
"Tenor banjo in Irish sessions—switching the mode to C-G-D-A is one menu click. Beats digging through a guitar app trying to find the right preset."
Mike R.
Tenor banjo player / Session musician