Violin Tuner
Tune your violin online with your microphone. Standard violin tuning is G – D – A – E, from the lowest string to the highest. Press Start tuner, pluck or bow one string and adjust until the needle is centered.
Your browser will ask to use the microphone. Choose Allow.
✓ All strings in tune
Tap a string to hear it and tune only that string. Audio is analysed on this device and never uploaded. How it works →
- What it does
- Hears each violin string, shows which one, its note, Hz and cents
- What it does not do
- Record or upload audio · detect chords
- Reference pitch
- A4 = 440 Hz, adjustable 415–466 Hz
- Tested with
- 58 studio recordings of 11 instruments (right note on about 95% of frames at normal volume) and test tones from B0 to C6
- Made by
- The Appcellent team
- Updated
- November 2026
Tuner not hearing you?
- Allow the microphone. If you blocked it: in Chrome or Edge, click the icon left of the address bar → Microphone → Allow, then reload. In Safari on iPhone, tap aA → Website Settings → Microphone → Allow. In Firefox, click the crossed-out microphone in the address bar. On a Mac, also check System Settings → Privacy & Security → Microphone for your browser.
- Open the page in Safari or Chrome. In-app browsers (Instagram, Facebook, TikTok) often block the microphone.
- Play one note at a time, louder. Hold your phone or laptop close to the instrument and let the string ring. A quiet room helps.
- Wrong octave or jumping notes? Let the attack fade for a moment — the reading settles once the note is steady.
- No microphone at all? Tap a string button to hear its note and tune by ear.
Violin string notes and frequencies
Standard violin tuning is G3 (196.00 Hz), D4 (293.66 Hz), A4 (440.00 Hz) and E5 (659.26 Hz), from the lowest string to the highest (A4 = 440 Hz).
| String | Note | Frequency |
|---|---|---|
| 4 | G3 | 196.00 Hz |
| 3 | D4 | 293.66 Hz |
| 2 | A4 | 440.00 Hz |
| 1 | E5 | 659.26 Hz |
How to tune your violin
- Press Start tuner and allow the microphone.
- Start with the A string — it is the reference string orchestras tune to.
- Pluck or bow the string. Use the fine tuner for small changes; use the peg only if the string is far off.
- Tune D, G and E the same way, then check A again.
Violin tuning: G D A E
The four violin strings are tuned in perfect fifths. The A string is the reference: most orchestras use A = 440 Hz, and some tune slightly higher (441–443 Hz). You can change the reference pitch in the tuner’s settings.
Pegs or fine tuners?
Fine tuners on the tailpiece are for small adjustments of a few cents. Pegs are for bigger changes: push the peg gently into the pegbox while turning so it does not slip back. Many beginner violins have fine tuners on all four strings; most advanced players keep one only on the E string.