Wind Chime Tuning Calculator

Tube length and diameter for target musical notes.

Note Frequency (Hz)

Outer Diameter (mm)

Wall Thickness (mm)

Material (1-4)

Tab to move between fields

Tube Length (mm)

320.9

Tube Length (inches)

12.63

Hang Point from End (mm)71.9

Hang Point from End (in)2.83

Tube Mass (grams)71.4

Bar Speed of Sound (m/s)5,055

2nd Overtone (Hz)1,213.1

3rd Overtone (Hz)2,377.8

How to Use This Calculator

Look up the frequency in Hz for your desired musical note (A4 = 440 Hz, C5 = 523 Hz).
Enter the outer diameter and wall thickness of your tube in millimeters.
Select the material: 1 = Aluminum, 2 = Steel, 3 = Copper, 4 = Brass.
Read the tube length in mm and inches — cut the tube precisely to this measurement.
Drill or tie the suspension cord at the hang point distance from either end (22.4% of tube length).

How the result changes with Outer Diameter (mm)

Note Frequency (Hz): Target pitch. A4=440, C5=523, G4=392. Use a note-to-frequency chart.
Outer Diameter (mm): Outer diameter of tube (3/4 in = 19mm is common).
Wall Thickness (mm): Tube wall thickness. Standard EMT conduit: ~1.5mm.
Material (1-4): 1=Aluminum, 2=Steel, 3=Copper, 4=Brass.

Tube Length (mm): Cut the tube to this length for the target note.
Tube Length (inches): Tube length in inches.
Hang Point from End (mm): Drill/tie at this distance from either end (22.4%).
Hang Point from End (in): Hang point in inches.
Tube Mass (grams): Weight of one tube.
Bar Speed of Sound (m/s): Speed of sound in the tube material.
2nd Overtone (Hz): 2nd mode frequency (2.757x fundamental).
3rd Overtone (Hz): 3rd mode frequency (5.404x fundamental).

Identify Input Parameters
4 parameters
Note Frequency (Hz) = 440, Outer Diameter (mm) = 19, Wall Thickness (mm) = 1.5, Material (1-4) = 1 = 4 input(s) provided
Calculate Tube Length
Tube Length = lengthM * 1000
320.9 = 320.9
Calculate Tube Length
Tube Length = lengthMm / 25.4
12.63 = 12.63
Calculate Hang Point from End
Hang Point from End = lengthMm * 0.224
71.9 = 71.9
Calculate Hang Point from End
Hang Point from End = lengthIn * 0.224
2.83 = 2.83