Instrument Tuner
Play a reference tone for each string and tune by ear. Presets for guitar, bass, ukulele and mandolin, standard or dropped.
Workspace
Related tools · Practice · FAQ
Related
Tune up and play these chords
Common scales to explore
Related lessons
Deepen your understanding with the structured lesson behind this tool.
Questions
How do I tune my instrument by ear?
Select your instrument (guitar, bass, ukulele, or mandolin), choose a tuning preset, and the tuner plays reference tones for each string. Listen to each reference pitch and adjust your tuning peg until the pitch matches.
What instruments and tunings are available?
The tuner covers guitar (standard, drop D, open G, open D, DADGAD), bass (standard, drop D, drop C, D standard, 5-string), ukulele (standard, low G, baritone, slack key), and mandolin (standard GDAE, open G, cross G, open D, GDAD). Use the instrument selector to switch between them.
How often should I tune?
Tune every time you pick up your instrument. Temperature and humidity changes, playing, and string aging all cause drift. Regular tuning trains your ear and ensures you always sound your best.
Is this tuner free?
Yes, the ChordLookup instrument tuner is completely free. No download or account required — just open the page, select your instrument, and start tuning.