Ukulele strings are sold by size and by material. Fluorocarbon, nylon, synthetic gut and polygut all feel and sound different, and a set made for a concert uke will not suit a baritone. Some sets include a wound low G, others keep every string plain.
The six sets below cover soprano, concert and tenor sizes. Materials, sizes and tuning come from each listing page. We have not played these strings ourselves, and tone claims are the makers’ own.
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What to Look For
| Feature | Why it matters |
|---|---|
| Size | Soprano, concert and tenor sets differ in length and gauge |
| Material | Fluorocarbon, nylon and synthetic gut are listed as sounding different |
| Low G | A wound or low-octave G changes the range |
| Ends | Ball end or plain end affects how you tie them on |
Specs at a Glance
| Set | Fits | Material | Notes |
|---|---|---|---|
| Martin M600 | Soprano or concert | Fluorocarbon per title | Material field conflicts; light gauge |
| D’Addario EJ88C | Concert, GCEA | Nyltech nylon | Made to emulate gut per the maker |
| D’Addario EJ99SC | Soprano or concert, GCEA | Fluorocarbon (Pro-Arte Carbon trebles) | Non-ball end |
| Aquila AQ-104 | Concert | Super Nylgut | Low G; 1 year limited warranty |
| Ernie Ball P02327 | Concert and tenor | Black nylon monofilament | Brass wound G; ball end; gauges .028 to .040 |
| Martin M625 | Tenor | Graphite gray polygut | Developed with Aquila per the maker |
The 6 Best Ukulele Strings
1. Martin M600 Fluorocarbon
A four-string set for soprano or concert ukuleles, titled as fluorocarbon with a light gauge. The listing is inconsistent: the material field says phosphor bronze and the item type says acoustic guitar body, so confirm the details on the page before ordering.
Suits: soprano or concert players. Strengths: a well-known maker. Weaknesses: conflicting listing fields. Skip it if you play tenor.
View Martin Ukulele Strings Fluorocarbon Soprano/Concert Gauge 4-String Set on Amazon
2. D’Addario Nyltech Concert EJ88C
A concert set for standard GCEA tuning in Nyltech, a material the maker says emulates natural gut. The listing calls the tone bright and projecting, with warmth, intonation and tuning stability.
Suits: a concert uke in GCEA. Strengths: a clear tuning match. Weaknesses: concert size only. Skip it if you want a low G.
View D’Addario Ukulele Strings Nyltech Concert EJ88C, 4-String Set on Amazon
3. D’Addario Fluorocarbon EJ99SC
A soprano or concert set in GCEA with Pro-Arte Carbon trebles, non-ball ends and gauges listed as .0205, .026, .0319 and .0224. The maker calls the tone bright and modern, and the packaging corrosion resistant.
Suits: bright, modern tone. Strengths: a fluorocarbon treble. Weaknesses: no ball end. Skip it if you want a tenor set.
View D’Addario Ukulele Strings Fluorocarbon Soprano/Concert EJ99SC, 4-String Set on Amazon
4. Aquila Super Nylgut AQ-104
A concert set with a low G in pearl-colored Super Nylgut. The listing says it is less stretchy than earlier strings, with a smooth surface, and notes that stretching is normal when new. The warranty is one year limited.
Suits: a concert uke with a low G. Strengths: a smooth surface. Weaknesses: new strings need to settle. Skip it if you want a high G.
View Aquila Super Nylgut AQ-104 Concert Ukulele Strings – Low G – 1 Set of 4 on Amazon
5. Ernie Ball P02327 Wound G
A set for concert and tenor ukuleles with black nylon monofilament plain strings and an 80/20 brass wound low G. The ball ends are meant to make installation easy, and the gauges are .028, .032, .040 and .030 wound.
Suits: concert or tenor ukes. Strengths: ball ends. Weaknesses: a wound G changes the feel. Skip it if you want all plain strings.
View Ernie Ball Concert and Tenor Nylon Ball End Ukulele Strings Wound G, Black (P02327) on Amazon
6. Martin M625 Polygut
A tenor-gauge set in graphite gray polygut, which the maker says was developed with Aquila. The listing describes a layered, vintage look, clear balanced tone and projection.
Suits: tenor ukuleles. Strengths: a distinctive gray color. Weaknesses: tenor only. Skip it if you own a soprano.
Changing Strings
- Replace one string at a time so the bridge keeps its shape.
- Stretch new strings gently and retune several times.
- Check that the set matches your ukulele size.
- Keep spare sets in their packaging.
Mistakes to Avoid
- Buying a set for the wrong ukulele size.
- Forgetting whether you want a high or low G.
- Ignoring ball end or plain end.
- Trusting a title when the listing fields disagree.
Ukulele Strings FAQ
Which sets have a wound low G?
The Ernie Ball P02327 lists a brass wound G. The Aquila AQ-104 is a low G set in Super Nylgut.
Which fit a tenor?
The Ernie Ball P02327 lists concert and tenor, and the Martin M625 is tenor gauge.
The Short Version
For a Martin set, the M600. For Nyltech, the D’Addario EJ88C. For fluorocarbon, the EJ99SC. For a Nylgut low G, the Aquila AQ-104. For a wound G, the Ernie Ball P02327. For tenor polygut, the Martin M625.
