TuneUniversal

TuneUniversal

Online guitar tuner

Use your microphone to tune standard guitar strings quickly.

Digital tuner
Lock selected stringRecommended: choose a string and the tuner stays on that target.

Reference tone

Mi2 / 82.41 Hz

All-string check

Strum all open strings once to see which strings are out of tune.

FlatIn tuneSharp

Detected note

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Frequency--
Cents--
TargetMi2

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Guitar Standard Strings: Mi - La - Re - Sol - Si - Mi

+/-5 cents = In tune

Move the instrument closer to the microphone.

Play one open string and let it ring.

Use Manual mode in noisy rooms.

How it works

  1. Allow microphone access.
  2. Play one string at a time.
  3. Adjust until the indicator says in tune.

Related guides

Choose the right tuning

Use standard tuning for most songs, Drop D for lower riffs, Eb Standard for lower tension, and Open G or Open D for open chord sounds.

Get a steadier reading

Keep the instrument close to the microphone, play one string at a time and wait a moment for the pitch to settle before adjusting.

Chords and key

Use the chord transposer when a song feels too high or too low. Move every chord by the same number of semitones.

Related guides

How to tune Guitar onlineA quick guide to tuning Guitar with a microphone. Reference notes: E - A - D - G - B - E.Standard tuning for GuitarLearn Standard tuning for Guitar. Reference notes: E - A - D - G - B - E.Eb Standard tuning for GuitarLearn Eb Standard tuning for Guitar. Reference notes: D# - G# - C# - F# - A# - D#.Half Step Down tuning for GuitarLearn Half Step Down tuning for Guitar. Reference notes: D# - G# - C# - F# - A# - D#.D Standard tuning for GuitarLearn D Standard tuning for Guitar. Reference notes: D - G - C - F - A - D.Full Step Down tuning for GuitarLearn Full Step Down tuning for Guitar. Reference notes: D - G - C - F - A - D.Drop D tuning for GuitarLearn Drop D tuning for Guitar. Reference notes: D - A - D - G - B - E.Drop C tuning for GuitarLearn Drop C tuning for Guitar. Reference notes: C - G - C - F - A - D.Open G tuning for GuitarLearn Open G tuning for Guitar. Reference notes: D - G - D - G - B - D.Common guitar tuningsA quick guide to Standard, Drop D, Eb Standard, D Standard, Open D and Open G.How to read chord symbolsLearn what C, Am, G7 and common chord names mean.

FAQ

Does it work on mobile?

Yes, modern mobile browsers with microphone access are supported.

Which tuning is included?

TuneUniversal supports most common guitar tunings, including Standard, Eb Standard, D Standard, Drop D, Drop D#, Drop C#, Drop C, Open D and Open G.

Why does the needle jump?

Room noise or multiple ringing strings can confuse pitch detection. Play one string clearly and let it settle.

Which tuning should beginners use?

For six-string guitar, start with standard E A D G B E before trying Drop D, Eb Standard or open tunings.