String gauge is the thickness of the strings, named after the high E string in thousandths of an inch. On electric guitar, 9s are the easiest to play, 10s are the most common all-round choice, and 11s and up give a fuller tone and suit lower tunings. Acoustic guitars usually use heavier sets, with light (12s) and custom light (11s) the most popular. Beginners usually do best on 9s or 10s on electric and 11s or 12s on acoustic.
String gauge changes how a guitar feels under your fingers and how it sounds. Sets are usually named after the gauge of the thinnest string.
How gauges are named
Gauges are measured in thousandths of an inch. A set called “10s” has a high E string of .010 inches. A typical set:
| Set | High E | B | G | D | A | Low E |
|---|---|---|---|---|---|---|
| Extra light (9s) | .009 | .011 | .016 | .024 | .032 | .042 |
| Regular light (10s) | .010 | .013 | .017 | .026 | .036 | .046 |
| Medium (11s) | .011 | .014 | .018 | .028 | .038 | .049 |
Exact gauges vary by brand.
Electric guitar gauges
- 8s and 9s: very easy bends and chords; thinner tone. Popular for lead playing and beginners.
- 10s: the most common electric set and a good default.
- 11s and up: fuller tone and stability for lower tunings; harder bends.
- Hybrid sets (light top, heavy bottom) combine easy bends with a solid low end.
Acoustic guitar gauges
Acoustic sets are heavier because they need tension to drive the guitar’s top.
- Extra light (10s): easiest, quieter.
- Custom light (11s): a good beginner choice.
- Light (12s): the most common acoustic set.
- Medium (13s): louder and fuller, harder to play.
Choosing a gauge
| Priority | Go lighter | Go heavier |
|---|---|---|
| Comfort and easy bends | ✓ | |
| Fuller tone and volume | ✓ | |
| Lower or drop tunings | ✓ | |
| Short scale guitar | ✓ (to keep tension) |
String materials
- Electric: nickel-plated steel (warm, balanced) is most common; pure nickel is warmer, stainless steel is brighter.
- Acoustic: 80/20 bronze is bright; phosphor bronze is warmer and longer-lasting.
- Coated strings last longer but cost more.
When to change strings
Change strings when they sound dull, won’t stay in tune or feel rough. For regular players, that is often every one to three months.
Common questions
What gauge strings should a beginner use?
Lighter gauges are easier on the fingers: 9s or 10s on electric, and custom light (11s) or light (12s) on acoustic.
Do heavier strings sound better?
Heavier strings produce a fuller, louder tone with more sustain, but they are harder to bend and press down. Many players prefer the sound; others prefer the playability of lighter strings.
Do I need a setup when changing string gauge?
Usually, if you change by more than one gauge. Different tension can change neck relief, action and intonation, and the nut slots may need adjusting for much heavier strings.