Ukulele Tuner
Tune your ukulele perfectly with this free browser-based chromatic tuner. Uses your microphone to detect pitch in real time and shows the detected note, cents deviation, and a visual gauge so you know exactly how far off you are. Supports 8 tuning presets: Standard High-G (G C E A) for soprano, concert, and tenor ukuleles, Low-G for extended range fingerpicking, D Tuning (the original soprano tuning), Baritone (D G B E matching guitar top strings), Slack Key / Open C for Hawaiian music, Open G, English / A Tuning, and Half Step Down. Click any string to hear its reference tone. All processing happens locally in your browser — no data is uploaded.
Click "Start Tuner" to begin. Allow microphone access when prompted.
Play a single string and the tuner will detect the pitch.
String Reference
Click any string to hear its reference tone
Tuning Guide
Standard ukulele tuning (re-entrant). The G string is higher-pitched than the C and E strings, giving the ukulele its characteristic bright, jangly sound. Used on soprano, concert, and tenor ukuleles.
How to Use
- 1
Allow Microphone Access
Click "Start Tuner" and grant microphone permission when your browser asks. The tuner needs to hear your ukulele to detect the pitch. All audio processing happens locally — nothing is uploaded.
- 2
Select Your Tuning
Choose a tuning preset from the dropdown. Standard High-G (G C E A) is the default for soprano, concert, and tenor ukuleles. Switch to Low-G, Baritone, or other presets as needed.
- 3
Play One String at a Time
Pluck a single string and let it ring. The tuner shows the detected note, how many cents sharp or flat you are, and highlights the closest target string. Green means in tune (within ±5 cents).
- 4
Use Reference Tones
Click any string in the reference section to hear what it should sound like. Match your string to the reference tone by ear for an alternative tuning method.
Examples by Niche
Start with Standard High-G tuning (G C E A). Remember the mnemonic "Good Children Eat Apples" for the string order from top to bottom.
Switch to Low-G tuning for solo arrangements and fingerpicking. The extended bass range lets you play melody and bass lines simultaneously.
Select Baritone (D G B E) if you play a baritone ukulele. The tuning matches guitar top strings, so guitar chord shapes transfer directly.
Try Slack Key / Open C tuning (G C E G) for traditional Hawaiian music. Strumming all open strings gives you a C major chord.
Frequently Asked Questions
What is standard ukulele tuning?
Standard ukulele tuning is G4-C4-E4-A4 (strings 4 to 1). This is called re-entrant tuning because the G string (4th) is higher in pitch than the C and E strings, giving the ukulele its distinctive bright, jangly sound. This tuning is used for soprano, concert, and tenor ukuleles.
What is Low-G tuning and when should I use it?
Low-G tuning drops the G string one octave lower (G3 instead of G4), creating a linear low-to-high pitch order. This extends the ukulele range downward, making it better for fingerpicking, solo arrangements, and jazz. You need a special wound or fluorocarbon Low-G string — a regular high-G string cannot be tuned that low.
How do I tune a baritone ukulele?
Baritone ukuleles use D3-G3-B3-E4 tuning — the same notes as the top four strings of a standard guitar. This is a linear (non-re-entrant) tuning. Select the Baritone preset in the tuner. If you already play guitar, baritone ukulele chord shapes will feel familiar.
What tuning presets are available?
Eight presets: Standard High-G (G C E A), Low-G, D Tuning (A D F# B), Baritone (D G B E), Slack Key / Open C (G C E G), Open G (G B D G), English / A Tuning (B E G# C#), and Half Step Down (F# B D# G#). Each preset shows the correct frequency for every string.
Related Tools
Guitar Tuner
Free chromatic guitar tuner using your microphone — detects pitch in real time with visual tuning meter.
Virtual Piano
Play piano in your browser using your computer keyboard — 2-3 octaves with realistic sound and sustain control.
Drum Machine
Create drum patterns with a 16-step sequencer — kick, snare, hi-hat, clap, and more with Web Audio synthesis.