Introduction to Ukulele Tuning
The ukulele is one of the easiest instruments to tune and maintain. With only 4 strings and a reentrant tuning (4th string is higher than 3rd), it’s perfect for beginners. Standard ukulele tuning is GCEA, and we’ll walk you through everything you need to know.
Standard Ukulele Tuning (GCEA)
String Notes (4th to 1st)
- 4th String (Thickest): G4 (392.00 Hz) — reentrant (highest)
- 3rd String: C4 (261.63 Hz)
- 2nd String: E4 (329.63 Hz)
- 1st String (Thinnest): A4 (440.00 Hz) — highest note
What is “Reentrant” Tuning?
“Reentrant” means the 4th string (thickest) is actually tuned higher than the 3rd string (thinner). This is unique to ukuleles and creates the characteristic bright, happy sound.
Traditional Alternative: Some players prefer “low G” tuning (G2 instead of G4), which creates a deeper sound. For beginners, standard GCEA is recommended.
Why GCEA?
- Bright, Happy Sound — The reentrant tuning creates the classic ukulele tone
- Natural Chord Shapes — Open strings form C and G chords
- Easy Transitions — Most chords involve just 1-2 finger changes
- Historical Standard — The tuning used since the 1920s
- All Ukulele Sizes — Soprano, concert, tenor, and baritone all use GCEA
How to Tune Your Ukulele
Using Guitar Tuner Ultra
- Visit the Guitar Tuner app
- Select “Ukulele” as your instrument
- Choose “Standard” tuning
- Click on each string (4th, 3rd, 2nd, 1st)
- Play the string and match the note to your tuner
- Move to the next string
Step-by-Step Tuning
Before You Start
- Use new strings (they’re easier to tune and hold tuning better)
- Ensure tuning pegs turn smoothly
- Have a reference note (tuner app, YouTube video, or tuning fork)
The Process
- 4th String (G) — Tune to G (higher G)
- 3rd String (C) — Tune to C (middle C, lower than 2nd and 1st)
- 2nd String (E) — Tune to E (higher than 3rd, lower than 1st)
- 1st String (A) — Tune to A (the highest note)
Pro Tips
- Tune from below — Always approach from lower pitch to avoid overstretching
- Turn slowly — Use fine adjustments for precise tuning
- Let it settle — After tuning, let each string vibrate for a moment
- Cross-check — Tune all strings, then check the first string again
- Check intervals — Play pairs of open strings to verify correct intervals
Tuning by Relative Pitch (No Tuner)
If you have one string in tune, you can tune the rest by intervals:
- Start with 4th String (G) — Use a reference (piano, another instrument, or memory)
- 3rd String (C) — Tune C to be lower than 4th string; fret 4th string at 5th fret and match
- 2nd String (E) — Tune E higher than 3rd; fret 3rd string at 4th fret and match
- 1st String (A) — Tune A higher than 2nd; fret 2nd string at 5th fret and match
Common Ukulele Chords
The beauty of GCEA tuning is the simplicity of basic chords:
Easiest Chords (No Fingers)
- Open/G — All strings open (G, C, E, A)
One-Finger Chords
- C Major — Press 3rd string, 3rd fret (most natural C in ukulele tuning)
- F Major — Press 1st string, 1st fret
Two-Finger Chords
- G Major — 2nd fret (2nd string) + 2nd fret (4th string)
- A Minor — 1st fret (2nd string) + 1st fret (4th string)
- D Major — 2nd fret (1st string) + 2nd fret (4th string)
Three-Finger Chords
- D Minor — 1st fret (2nd string) + 2nd fret (3rd string) + 2nd fret (4th string)
- Bb Major — 1st fret (1st string) + 3rd fret (2nd string) + 1st fret (4th string)
Why Ukuleles Go Out of Tune
- New Strings — Stretch and need frequent retuning first week
- Temperature Changes — Heat affects wood and string tension
- Humidity Changes — Wood expands/contracts, affecting neck tension
- Playing Intensity — Vigorous strumming stretches strings
- Age — Strings gradually lose elasticity
Keeping Your Ukulele in Tune
Daily Practice
- Tune before every practice session
- Check tuning between songs
- Gentle tuning (slow peg turns) prevents overstressing
Weekly Maintenance
- Clean your ukulele with a soft cloth
- Check for loose tuning pegs
- Inspect strings for wear
Monthly Care
- Change strings if they sound dull or feel rough
- Store in a stable temperature/humidity environment
- Use a ukulele strap to prevent drops
Storage
- Keep in a case or gig bag
- Maintain moderate temperature (60-75°F is ideal)
- Avoid direct sunlight
- Don’t leave in hot cars or damp basements
Reentrant vs Low G Tuning
Standard (Reentrant) GCEA
| Aspect | Reentrant | Low G |
|---|---|---|
| 4th String | G4 (high) | G2 (low) |
| Sound | Bright, happy | Deep, mellow |
| Strumming | Delicate | Percussive |
| Fingerstyle | Natural | More bass |
| Best For | Ukulele beginners | Folk/blues |
For beginners, standard GCEA is easier and more traditionally “ukulele.”
Troubleshooting
“My Ukulele Won’t Stay in Tune”
- Check tuning pegs for looseness
- Ensure strings are seated in nut and bridge grooves
- Use new strings
- Check for structural damage
“I Can’t Get Precise Tuning”
- Use a digital tuner (more accurate than by ear)
- Tune in a quiet environment
- Let each string vibrate for 2-3 seconds before checking
- Tune all strings once, then recheck
“The 4th String Keeps Going Slack”
- Make sure 4th string is G4 (high), not G2 (low)
- Check that tuning peg turns smoothly
- May need a new string
Easy Practice Song
Try “Twinkle Twinkle Little Star” in C major:
C Major throughout — just one chord!
Twinkle, twinkle, little star,
How I wonder what you are...
Perfect for practicing smooth strumming in one position.
Resources
- Download ukulele chord chart
- Learn ukulele songs for beginners
- Explore ukulele techniques
- Check ukulele brand reviews
Pro Tip: The ukulele is incredibly forgiving. Even if not perfectly in tune, it sounds pleasant. This makes it perfect for beginners to build confidence before tackling more demanding instruments.
Fun Fact: The ukulele came from Hawaii in the 19th century and “ukulele” means “jumping flea” in Hawaiian—supposedly because players’ fingers moved so quickly!