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.
Values use equal temperament with A4 fixed at 440 Hz. Play one open string at a time and match it against the tuner below.
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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.