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Key takeaways
- A common four-string baseline is 45–65–85–105, but construction changes the exact response.
- Five-string low-B gauges commonly sit near .125–.135; scale and core design matter as much as diameter.
- Dropping E1 to D1 leaves about 79% of the original tension with the same string.
- Bass scale labels refer to winding fit as well as nominal speaking length, so measure before ordering.
How to use this: Use these recommendations to compare options, then check the final set against the string maker's specifications and confirm that it suits your instrument.
Quick answer
Use .045–.105 as a four-string reference, not a rule
A .045–.105 set is a common long-scale four-string baseline, while five-string sets often add a low B around .125–.135. The right bass string gauge depends on scale, tuning, construction, taper, attack, and the response you want from the lowest string.
A common E-standard comparison point.
Scale and construction determine whether it feels clear or stiff.
Gauge alone does not confirm hardware compatibility.
How to use the bass string gauge chart
Choose the row that matches string count and tuning, then calculate that complete set at the bass’s actual scale. Compare low strings separately because construction and speaking length have the largest practical effect there.
- Identify short, medium, long, extra-long, or multiscale speaking length.
- Record all gauges rather than only the low and high package numbers.
- Compare the chart set with the installed set in the tension calculator.
- Adjust the dropped or extended low string without automatically changing every upper string.
- Verify winding length and taper placement before purchase.
Bass gauge starting points by job
These ranges organize the decision; they do not describe identical tension across brands. Recalculate the actual set whenever construction data is available.
| Job | Gauge family to compare | Main check |
|---|---|---|
| 4-string E Standard | .040–.095 to .050–.110 | Attack and fretting effort |
| 5-string B Standard | Add roughly .125–.135 low B | Scale, clarity, and taper |
| 4-string Drop D | Low string roughly .110–.120 | Match the former E response |
| Low C or lower | Custom low string | Hardware fit and construction data |
Common bass gauge comparison mistakes
Pack labels hide core-to-wrap choices and taper geometry. Those construction details can make two strings with the same outside diameter behave differently.
- Do not compare a tapered and non-tapered string by gauge alone.
- Do not assume every .130 low B has the same unit weight or stiffness.
- Do not use overall bass length in place of speaking scale.
- Do not install a larger gauge before checking nut, bridge, and tuner fit.
Four-string bass gauge families
Sets are listed highest to lowest as G–D–A–E. Custom sets often smooth the progression more effectively than swapping only the lowest string.
| Set class | Typical gauges | Common use |
|---|---|---|
| Extra light | 35–55–75–95 | Soft response and lighter touch |
| Light | 40–60–80–100 | Flexible general playing |
| Medium | 45–65–85–105 | Common all-purpose baseline |
| Heavy | 50–70–90–110 | Firm response or modest down-tuning |
Five-string and low-B gauges
A standard five-string adds B0 below E1. Common low-B gauges range roughly from .125 to .135, with lighter or heavier choices depending on scale and construction. A 35-inch or multiscale bass can improve low-B response without an extreme diameter.
| Response | G–D–A–E–B example | Typical scale fit |
|---|---|---|
| Light | 40–60–80–100–125 | 34–35 in |
| Balanced | 45–65–85–105–130 | 34–35 in |
| Firm | 45–65–85–110–135 | 34–35+ in |
Low-B clarity depends on core design, setup, pickup position, and playing technique as well as tension.
Drop D, C-sharp, and C on bass
Dropping E1 to D1 removes about 21% of tension with the same string. C-sharp1 retains about 71%, and C1 retains about 63%. A larger low string can recover the load, but changing only that string may create a noticeable step in stiffness and output.
For a dedicated low tuning, calculate all four strings and consider a custom set. For occasional detuning, a moderate compromise may be more practical than optimizing only one pitch.
Fit, winding length, and taper
Bass strings are sold in scale categories that refer to winding length, not simply nominal instrument scale. The silk or taper must not fall across the nut, and full-thickness winding must not stack excessively on the tuner. Measure the ball-to-nut and ball-to-post distances before ordering an unfamiliar set.
Reference material
Technical references
Use these manufacturer references when you need product-specific tension or setup information. They were last reviewed on ; the gauge suggestions on this page remain starting points because strings and instruments vary.
Before you change strings
Save your current setup, change one variable at a time, and recheck tuning, neck relief, action, and intonation after the new strings settle. If a result looks inconsistent with your instrument or a manufacturer's data, send the setup details through the contact page.