This website is still in development. The data is not complete and the results are not yet accurate.
- Bass strings and acoustic guitar strings are not yet available.
- Electric guitar string data may contain errors regarding high gauge strings (higher than .050).

We are in the process of collecting the remaining data from the d'Addario product catalog, and plan on including other brands in the future.
Instrument preset
Electric
Electric
Electric 7-string
Electric 8-string
Electric (extended scale)
Electric (multiscale)
Bass
Bass 5-string
Bass 6-string
Multiscale
Constant scale
Constant scale
Fanned frets
Free scale

Quick tuning
Quick tension

String range
NYXL
XL PROSTEELS
NYXL
XS NICKEL
XL NICKEL
XT NICKEL
XL HALF ROUNDS
XL PURE NICKEL
XL CHROMES

Tension unit
Pounds (lb)
Newtons (N)
Kilograms (kg)
Pounds (lb)
Length unit
Inches (in)
Millimeters (mm)
Meters (m)
Inches (in)
Tuning
Tension
Scale length
Best match
Actual tension

How it works

Mersenne's laws provide us with a mathematical equation to describe the behaviour of oscillating strings.

Given the vibrating length of the string L, its tension T and its unit weight (mass per unit length) W, we can calculate the fundamental frequency f that the string will play when plucked.

f=12LTWf = \frac{1}{2L}\sqrt{\frac{T}{W}}

By switching the equation around, we can compute the unit weight W required for the string to vibrate at the desired frequency, according to the instrument's tuning.

W=T(2Lf)2W=\frac{T}{\left(2Lf\right)^{2}}

Finally, we can compare against publicly available data from string manufacturers to find the real string that most closely matches our ideal unit weight.

{ "reference": "NYNW022", "range": "nyxl", "diameter": 0.022, "unitWeight": 0.00009105057518733917 }, { "reference": "NYNW030", "range": "nyxl", "diameter": 0.03, "unitWeight": 0.0001697195018399874 }, ...