Strings are the only part of a ukulele that touches both your fingers and the sound, and they cost less than lunch. A tired uke with fresh, well-chosen strings routinely beats a better uke with dead ones — which makes this the highest-leverage page in the gear section.
Materials, honestly
- Nylon is the traditional voice: warm, soft under the fingers, slightly quiet, a little stretchy (expect a longer settling-in). Fine, friendly, forgiving.
- Fluorocarbon is the modern default: denser than nylon, so strings are thinner at the same pitch — brighter, louder, more precise, faster to settle, and more stable once there. If you do not know what you want, you want fluorocarbon.
- Wound strings (a metal wrap over a core) appear where plain strings would be too fat to speak clearly — low-G strings, baritone’s low D and G, every bass-uke set. They add sustain and a piano-ish clarity, plus a little finger squeak.
- Titanium and “carbon” marketing names are mostly fluorocarbon-family variants with different stiffness and shine — differences are real but small; material class matters more than brand poetry.
Sets are size-matched — buy yours
A string set is engineered for a scale length: the same pitch needs different tension on a 13-inch soprano than a 17-inch tenor, so packets say soprano, concert, or tenor for a reason (the full size map is in ukulele sizes). Baritone sets are their own world — DGBE with two wound strings — and bass-uke sets are fat polymer or wound strings entirely. Mixing sizes “because they fit” yields floppy or cheese-wire tension; matched sets are the whole game. Standard sets are reentrant high-G GCEA, which is what this site’s soprano charts assume.
The low-G purchase, specifically
Low-G is a different string, not a retuned one — either wound metal (clear, sustaining, slightly squeaky) or a very fat plain fluorocarbon (blends better, needs a generous nut slot). Buy it as a dedicated low-G set rather than improvising a single string into a high-G set, and expect the nut question on older or budget ukes. Whether you want it at all is a real decision about what the instrument is for — the full argument, both directions, is low-G vs high-G.
When to change, and how
Uke strings do not snap on a schedule; they die quietly — intonation drifts, the sound dulls, tuning wanders. A practical rule: every six months for a daily player, yearly for a casual one, immediately for any uke that arrived with mystery factory strings. Change one string at a time (the neck stays under even tension and you always have a reference pitch), leave two or three wraps on each peg, stretch each string gently as you bring it up, and expect two or three days of retuning — the tuner earns its keep that week. Then celebrate the new brightness properly: fresh strings make the daily drills sound like an upgrade you screwed on for pocket money.