Why does the tuner show the wrong note?

Background noise, multiple ringing strings and strong overtones can confuse pitch detection. Move closer to the microphone, play one note at a time and let the first noisy attack pass.

Does Viralkey record my microphone?

No. The tuner processes microphone samples locally for live feedback. It does not record or upload them, spend credits or save a History entry. Stop the microphone when you finish.

Free online tuner & guitar tuner

Play a string and watch its pitch settle into place. This chromatic tuner listens through your microphone and shows how close you are to the note.

Your next note starts here

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— Hz— Cents

Play one string or sing one steady note. Headphones help prevent feedback.

A4 calibration · Hz

Standard guitar tuning

Hear your instrument at its best.

Tune one string at a time in a quiet room. The chromatic tuner recognizes notes rather than assuming a tuning, so you can use standard guitar tuning or follow your own reference. The reference is A4 = 440 Hz unless you change it.

Use

Guitarist adjusting an acoustic guitar's tuning peg in daylight

An online guitar tuner for all six strings

Use E2 A2 D3 G3 B3 E4 as your guide to standard guitar tuning, from the lowest string to the highest. Enable your microphone on this free online tuner, then pluck one string at a time while watching the note and cents reading. Turn the tuning peg gently, let the sound settle, and check the strings again before playing a familiar chord to hear how they sit together.

Use the guitar tuner

Violinist tuning a violin in a bright rehearsal room

Tune beyond standard guitar notes

The chromatic tuner follows individual notes rather than locking you to six guitar strings, so you can check a different tuning or a sustained note on another instrument. For voices, switch to the free vocal tuner. Adjust the A4 reference between 430 and 450 Hz when matching an ensemble, then take a tuned take into a music video template.

Use the guitar tuner

Three steps. Straight to the music.

Allow your microphone
Click Enable microphone and accept your browser’s permission request. Your microphone is not accessed before you ask.
Play one clear note
Pluck one open string and let it ring. Damp the other strings and avoid background music.
Bring the pitch to center
If the note is flat, carefully raise it; if sharp, lower it. For standard guitar, follow E2, A2, D3, G3, B3 and E4.

Use

Keep going with the same session

A tempo or a pitch is rarely the only question. Stay on Viralkey to finish the next part of the same practice.

Explore Tools

Start from harmony and instruments

Hear a key, play a shape, or try a voicing in the browser before you take it back to your track.

Free interactive music tools

What creators say about Viralkey

Explore how creators turn photos and music into music videos with Viralkey.

Jason Mitchell

Indie Musician

One portrait plus my track — a performance-ready AI MV in 3 minutes.

Short-form for the next release finally keeps up.

Grace Fox

Label Manager

Same face, different style — the team gets a new visual direction without reshooting or rebuilding the concept.

Emma White

Electronic Musician

Upload a song and AI builds around rhythm and emotion — drops and energy shifts land in the picture.

Mia Chen

Producer

No shoot crew.

Upload the track and get a release-ready AI music video in minutes.

Diego Martins

Musician

Lip-sync and expression actually feel like singing — not a mismatched face track.

Viewers feel the emotion land.

Hannah Parker

Label Manager

Same face across performance, story, and VFX, then 100+ styles on top — series posting finally scales.

Ravi Nair

YouTuber

TikTok needs hooks and watch-through structure.

Viralkey clips can stop the scroll in the first seconds.

Yuki Lin

Creator

Scenes and looks change, but the face stays the same — no face drift, consistent character at last.

Leo Santos

Creator

Ship on release day: image to music video or song to music video — both modes cover what I need.

A few things worth knowing

Both. The same chromatic detector recognizes notes across the scale, while the standard guitar string buttons provide convenient reference tones. It is not limited to six-string guitar.