This hub collects all of the free online tuning tools on this site alongside guides for getting the most out of each one. All tools use your device’s microphone and work in any modern browser — no download, no app, no account.
Tune Your Instrument Right Now
Choose your instrument below and open the dedicated tuner:
String Instruments
Guitar Tuner — Standard EADGBE plus Drop D, Open G, DADGAD, half step down, Open D, Drop C, full step down, Double Drop D, and Open A. Works for acoustic, electric, and classical guitar on any device.
Ukulele Tuner — Standard GCEA (High-G) for soprano, concert, and tenor ukuleles. Plus Low-G, Baritone DGBE, D tuning (ADF#B), and Slack Key GCEG. Explains the re-entrant tuning that confuses new players.
Violin Tuner — Standard GDAE tuning for violin and fiddle. Covers fine tuners vs pegs, correct tuning order (A first), and how the same tool works for mandolin. Includes viola CGDA guidance.
Instrument Tuner — Multi-instrument tuner with presets for guitar, bass, ukulele, violin, and other common instruments. Adjustable A4 reference (432 Hz, 440 Hz, 442 Hz, custom).
Universal Tuning
Chromatic Tuner — Detects all 12 chromatic notes across all octaves with no presets. Use for any instrument, any custom tuning, or any non-standard setup. Includes dedicated guidance for transposing instruments (Bb clarinet, Eb alto saxophone, F horn).
Guitar Tuning — Deep Guides
- Guitar tuning guide — Complete reference for standard tuning and 10 alternate tunings. String notes, Hz values, famous songs, and genre guidance for every tuning.
- 12-string guitar tuning chart — Octave pairs and tuning reference for 12-string guitar
- Basic guitar notes chart — Open string notes and first position reference for beginners
- Beginner guitar practice routine — How to structure practice sessions after tuning
- Beginner guitar warm-ups — Physical and musical preparation for guitar practice
- Can a pitch detector help tune a guitar — How the frequency detector approach to guitar tuning works
- Instrument quick-starts: guitar, violin, and piano — Getting started with pitch detection for string and keyboard instruments
Violin and Strings
- Using pitch detection for violin intonation practice — How to use the pitch tools for fretless string intonation work
- Bass guitar tuning chart — Standard and alternate bass guitar tunings with string frequencies
- Bass guitar string chart — String gauges and scale length reference for bass players
Piano Tuning
- Pitch detection for piano tuning basics — How pitch detection tools assist piano tuning checks
- Average cost of tuning a piano — Professional piano tuning cost guide
- Bass clef notes for piano chart — Note reference for piano bass clef reading
- Bass notes piano chart — Low register piano note reference
Wind, Brass, and Other Instruments
- Alto saxophone fingering chart — Standard fingerings for alto saxophone
- Alto saxophone note chart — Note-to-fingering reference for alto sax
- Alto saxophone scale chart — Major and minor scales for alto sax
- Bass clarinet fingering chart — Fingering reference for bass clarinet
- Bass trombone slide chart — Slide positions for bass trombone
- How saxophone players can stay in tune with pitch detection — Using pitch tools for wind instrument intonation
- Baritone notes finger chart — Fingering reference for baritone
- Baritone scale finger chart — Scale reference for baritone
Tuning Science and Reference
- A440 tuning standard explained — Why A4 = 440 Hz is the universal reference pitch
- Historical pitch standards — How tuning references have changed from Baroque to modern
- 432 Hz vs 440 Hz — The debate about alternate tuning references with the actual physics
- Intonation and temperament explained — Equal temperament, just intonation, and why they differ
- Frequency to note converter — Convert any Hz value to its musical note name
- Musical note frequency chart — Full Hz reference for all notes A0 to C8
- Frequency ranges for instruments and voices — Hz ranges for all common instruments
- Why tuners show multiple notes — harmonics explained — Why a tuner sometimes reads the wrong note