Violin Tuner
Tune a violin to standard tuning GDAE with a free mic tuner that shows note, Hz and cents for each of the four strings.
Microphone tuner
Play a string, see exactly how far off it is
- Your browser asks once for the microphone. Choose Allow.
- Audio is analysed on this device. Nothing is recorded or uploaded.
- The screen stays awake while the tuner runs.
Space start or stop 1 to 4 pick a string and hear it Esc stop the tone
Values use equal temperament with A4 fixed at 440 Hz. Every frequency links to its own reference page. The tuner above rescales them when you calibrate A4.
Standard violin tuning is G3, D4, A4 and E5, four strings tuned a perfect fifth apart. A4 at 440 Hz is the same reference pitch orchestras tune to, which makes the violin's A string a natural anchor for tuning the rest of the instrument.
Tuning a violin string by string
The four strings sit a fifth apart: G3 at 196 Hz, D4 at 293.66 Hz, A4 at 440 Hz and E5 at 659.26 Hz. Many players tune the A string first to concert pitch, then match D and G below it and E above it, checking each pair of adjacent strings for a clean, beatless fifth once they are close.
Fine tuners on the tailpiece make small adjustments easier and safer than the pegs, especially on the thinner, higher-tension E string, which can snap if over-tightened quickly with a peg. Bow each string cleanly and let it ring before reading the tuner, since a scratchy or muted bow stroke gives the pitch detector a noisier signal to work with.
Frequently asked questions
What is standard violin tuning?
G3, D4, A4, E5 from the lowest string to the highest, each pair of adjacent strings a perfect fifth apart.
What frequency is the violin A string?
A4 is 440 Hz, the same international concert pitch reference used to tune an entire orchestra, which is why violinists often tune the A string first.
Why use fine tuners instead of the pegs?
Fine tuners on the tailpiece allow small, precise pitch changes without the risk of a peg slipping or a string snapping, which matters most on the higher-tension E string.
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Frequencies on this page are computed at build time from twelve tone equal temperament with A4 = 440 Hz, using the twelfth root of two (about 1.059463) per semitone. Nothing is typed in by hand. See the full method and sources. Maintained by FusionStudios. Last reviewed: .