Tune with precision. Choose your frequency.

432 Hz Guitar Tuner is a professional-grade chromatic tuner designed for guitarists and musicians who want accurate tuning with support for alternative tuning standards.

Tune your instrument to 432 Hz, 440 Hz, or 430.54 Hz scientific pitch, with real-time visual feedback and cent-level precision. Whether you’re exploring alternative tunings or just need a reliable everyday tuner, this app delivers accuracy, clarity, and simplicity.

Core Features

- Chromatic tuner for guitar, bass, ukulele, and any instrument
- Three tuning standards: 440 Hz – modern industry standard, 432 Hz (Verdi tuning) - popular alternative tuning, 430.54 Hz scientific pitch - mathematically derived system with middle C at 256 Hz
- Guitar-first design with automatic string detection (E A D G B E)
- High-precision pitch detection (±1 cent accuracy)
- Fast, low-latency response for real-time tuning
- Works completely offline
- Dark mode support

Designed for Musicians

The tuner works chromatically by design, meaning it can detect and tune any note you play. Instrument presets simply provide a clearer, more intuitive interface - making tuning faster and easier without sacrificing flexibility.

Learn About Tuning Standards

Includes a built-in Learn section that explains:

- What 432 Hz tuning is and why musicians use it
- The history of Verdi tuning
- What 430.54 Hz scientific pitch means and how it differs
- How modern 440 Hz became the standard
- How to use the tuner effectively

Who This App Is For

- Guitarists exploring 432 Hz or alternative tunings
- Musicians who want a reliable chromatic tuner
- Players interested in the history and theory of tuning systems
- Anyone who wants a clean, accurate, free tuner with no distractions

Free & Simple

- No accounts
- No internet required
- No unnecessary permissions
- Free to use

Download 432 Hz Guitar Tuner and tune your instrument your way - accurately, clearly, and confidently.