Drop B is Drop C lowered by one more semitone: B, F#, B, E, G#, C#. It keeps the same interval pattern — a fifth between the 6th and 5th strings, fourths above that — so every shape you use in Drop D or Drop C transfers unchanged. Only the pitch moves.
That extra semitone matters more than it sounds like it should. At B1 the 6th string is close to the bottom of what a normal 25.5" guitar can hold cleanly, so Drop B is where string gauge and setup stop being optional. Click here to open the tuner and work through the steps below.
In Drop B tuning, the guitar strings are tuned to the following notes and frequencies:
B1 sits at 61.74 Hz, roughly a fourth below where a standard 6th string is designed to work. Most players use at least a 12-60 set, and many move to a 13-62 or a baritone-scale instrument. Too light a string here will not just sound flabby — it will read as unstable on any tuner, including this one, because the fundamental is weak and the harmonics dominate.
Tuning your guitar to Drop B with OnlineTuner.org is straightforward:
Tune the 6th string in two passes. Take it down to roughly B, tune the other five, then come back to it — the neck relief shifts as five strings lose tension, and the low B will have drifted.
OnlineTuner.org offers a number of features that make tuning to Drop B both easy and precise:
Drop B arrived as the metalcore and deathcore scenes of the mid-2000s pushed past Drop C looking for more weight. It was a natural next step rather than an invention: the same shapes, one fret lower, with the low string finally deep enough to sit under a double-kick pattern without competing with the bass guitar.
Its adoption tracked the spread of heavier factory string sets and better-built extended-range guitars. Once 12-60 sets were on every shop wall and 26.5" baritones stopped being custom orders, tuning a six-string to B became a practical choice for touring bands rather than a studio-only trick.
Drop B is used across metalcore, deathcore and djent-adjacent styles by bands including Parkway Drive, A Day to Remember and Bring Me the Horizon. It gives a six-string much of the low-end reach of a seven-string while keeping a six-string neck, which is the main reason players choose it over adding a string.
Outside heavy music it is also a practical tuning for accompanying low voices, since it puts the guitar a fourth below standard while leaving fingerings alone. If Drop B turns out to be lower than you need, our Drop C tuner is the next step up.
The present Drop B guitar tuner, provided to you by OnlineTuner.org, is designed to suit both novice and experienced musicians' needs. It offers an accurate, robust and versatile tuning experience that can be customized to your specific requirements. You can access each of these settings directly on our Drop B guitar tuner, or by clicking on “Advanced settings”.
One of the most crucial settings to consider when using our Drop B guitar tuner is the adjustable frequency of the A4 note. This setting serves as the foundational pitch from which all other notes are calculated. While the default is set to the international standard of A=440 Hz, many musicians have strong preferences for alternative frequencies such as A=432 Hz or A=442 Hz. The ability to adjust this foundational pitch makes our Drop B guitar tuner flexible enough to accommodate musicians who play in various tuning systems, whether historical temperaments or modern experimental tunings.
Another pivotal feature is the sensitivity setting, which can be altered to suit the specific environment or instrument in use. You control it through the detection algorithm's probability threshold, which determines how readily the tuner commits to a note. This setting earns its keep in Drop B. At 61.74 Hz the low B produces more energy in its harmonics than in its fundamental on most laptop and phone microphones, and a permissive threshold will happily report B2 instead. Raise it, and pick nearer the bridge for a cleaner reading.
Further, the noise gate setting of our Drop B guitar tuner stands as a strong ally for those tuning in acoustically challenging environments. Whether you are in a room with an air conditioner humming in the background or in a rehearsal space with other musicians, the noise gate lets you set a threshold below which sounds are ignored. This ensures that only the sound of your instrument is picked up and analyzed, increasing the tuner’s accuracy.
This last setting is simply a matter of taste, but you can choose whether you prefer our Meter tuner or our Slider tuner. To alternate between one and the other, just click the "Display the slider tuner" switch on our Drop B guitar tuner.
Different songs call for different tunings. Below you will find every free online tuner we offer for this instrument, from standard tuning to alternative options such as drop, open and half-step tunings. Each tuner runs directly in your browser and listens through your microphone. There is nothing to install and nothing to pay. Choose the tuning you need and start playing in seconds.