Guitar gear guide

🎸 Tuner

Fast, accurate tuning for guitar, bass, ukulele, violin — or any instrument (chromatic).

📖 How it works
Instrument
  • Guitar (6-string)
  • Bass (4-string)
  • Ukulele
  • Violin
  • Chromatic (any)
Tuning
  • Standard (E A D G B E)
  • Drop D (D A D G B E)
  • Half-Step Down (Eb Ab Db Gb Bb Eb)
  • Open G (D G D G B D)

Ready to Tune

Click "Start Tuning" to enable your microphone and begin tuning your instrument.

A4 = 440 Hz

📖 How to Tune Your Instrument

  • Tune from the lowest string to the highest (low to high pitch)
  • Pluck the string once and let it ring clearly
  • If flat (note too low) → tighten the tuning peg (turn away from you)
  • If sharp (note too high) → loosen the peg slightly, then tune back up
  • Always finish by tuning up to the note for stability
  • Plucking too hard causes the pitch to read sharp initially
  • Background noise or other strings ringing can confuse detection
  • Make sure you're tuning the right string — check the octave number
  • New strings stretch and need re-tuning several times

Target notes for your selected tuning:

  • Wait about 1 second after plucking — the initial attack can read slightly sharp
  • Look for when the needle settles and holds steady — that's your true pitch
  • The note will show green (In Tune) when it's stable and within range
  • If the reading jumps around, pluck again more gently and let it ring
  • Unplugged electric? Get close to your computer's mic — the signal is very quiet
  • Cents measure how far you are from the target note
  • 100 cents = 1 semitone (one fret on guitar)
  • ±5 cents or less is considered "in tune" for most playing
  • The meter needle should be centered when in tune

Frequently Asked Questions

Make sure you've granted microphone permission. If you're playing an unplugged electric guitar, the signal is very quiet — try getting closer to your computer's microphone, or plug into an amp or audio interface. Also check that your browser isn't muted.

This is normal! The initial "attack" when you pluck a string is slightly higher in pitch. Wait about 1 second for the string to settle, then take your reading when the needle stabilizes.

This is the reference frequency for the note A4 (the A above middle C). 440 Hz is the international standard, but some orchestras and genres use 432 Hz or 442 Hz. Most guitarists should leave it at 440 Hz unless playing with others using a different reference.

Yes! This tuner uses the YIN algorithm with sub-cent accuracy. It's suitable for practice, recording, and live performance. For best results, tune in a quiet environment and let strings ring clearly.

Absolutely! Use the instrument dropdown to select your instrument, or choose "Chromatic" mode to tune any instrument to any note. The tuner supports standard and alternate tunings for guitar, bass, ukulele, and violin.