How to Tune a Ukulele:
Step by Step
Standard ukulele tuning puts your four strings at G–C–E–A. When every string reads in tune on a chromatic tuner, you're ready to play. This guide walks you through each string one at a time using a free microphone tuner.
| String Position | Target Note | Status |
|---|---|---|
| String 4 (Nearest chin) | G4 | In Tune ✓ |
| String 3 | C4 | In Tune ✓ |
| String 2 | E4 | In Tune ✓ |
| String 1 (Nearest floor) | A4 | In Tune ✓ |
How to Tune Your Ukulele: 7 Steps
Follow these steps in order. Each step has one action and a clear signal that it's complete.
Open a free microphone tuner
Open GuitarTuner.io on your phone or computer. The tuner works in any modern browser with no download required.
Allow microphone access
When the browser asks for permission, tap Allow. Hold your ukulele close to the device so the mic picks up the sound.
Pluck String 4 (G)
Pluck the string nearest your chin. This is the G string. Let it ring out clearly.
Check the Tuner Display
Look at the needle. If it's to the left, you are 'flat' (too low). If it's to the right, you are 'sharp' (too high).
Identify the direction
Decide if the string needs to be tightened to raise the pitch or loosened to lower it.
Adjust the tuning peg
Turn the peg slowly. Tighten to raise pitch; loosen to lower it. Pluck again after each small adjustment.
Re-pluck and repeat
Confirm the reading holds, then move to the next string (C, E, then A).
Three Mistakes Beginners Make
Mixing up string order
The string nearest your chin is String 4 (G4). String 1 (A4) is nearest the floor. Check your plucking if the tuner shows the wrong note.
Turning the peg too far
One large turn can overshoot the target. Turn in small increments and let the tuner settle before turning again.
New strings going flat
Brand-new strings stretch for the first few days. If it goes out of tune in minutes, just keep re-tuning until they settle.
Understanding the GCEA String Order
Standard ukulele tuning is written G–C–E–A, listed from String 4 to String 1. This 're-entrant' tuning is what gives the ukulele its unique, cheery sound.
"Unlike a guitar, the strings don't go strictly from lowest to highest pitch, as the G string is tuned higher than the C string."
Frequently Asked Questions
How do I tune a ukulele without a tuner?
The most reliable method is a chromatic tuner like GuitarTuner.io. Otherwise, you can tune the ukulele to itself by matching the 5th fret of String 2 (E4) to String 1 (A4) open.
Why does my ukulele go out of tune so quickly?
New strings stretch, and temperature changes affect pitch. Ensure your tuning pegs are tightened and the strings are properly broken in.
Can I use GuitarTuner.io to tune a ukulele?
Yes. It is a chromatic tuner that detects any note. Select your string, pluck it, and follow the visual guide.
Ready to tune your ukulele?
Open the free microphone tuner to get started immediately.