Manual
Spoke length worksheet

Spoke calculator

Calculate the correct spoke length with SpokeCalc. New!! Wheel geometry and Lacing configuration drawings!

Select version
Lite version only calculates your desired spoke length.
In PRO version you can name your components, view tension details and access print sheet.
Seen on

FRONT WHEEL

Hub

Type:

i
i
i
i
i
i
i
i
i
i
i
i
i
i
i
NEW
Hub measurements visual tool

Rim

i
i
i
i
i

Lacing

LACING PATTERN

i
i

SPOKES

Select:

i
*This feature automatically calculates weight according to spoke length and also estimates spoke stretch!
LEFT SIDE

RIGHT SIDE

?

REAR WHEEL

Hub

Type:

i
i
i
i
i
i
i
i
i
i
i
i
i
i
i
NEW
Hub measurements visual tool

Rim

i
i
i
i
i

Lacing

LACING PATTERN

i
i

SPOKES

Select:

i
*This feature automatically calculates weight according to spoke length and also estimates spoke stretch!
LEFT SIDE

RIGHT SIDE

?
Seen on

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Disclaimer

IMPORTANT: All measurements are in mm. Also, please enter all the measurements without units. You can enter decimal values if desired. Make sure you use DOT(.) instead of comma(,) as a separator.
NOTE: This spoke calculator is intended for metal or stainless only and not titanium spokes.

This spoke calculator is provided only as a guide for your convenience in determining spoke lengths. It is provided on an "AS IS" and "WITH ALL FAULTS" basis only. For the calculation function to take place, the disclaimer must be accepted. Spoke calculator for classic hub type is Damon’s Rinard exact spoke calc, just rewritten as a web application. All the calculations should be the same. If you like this tool, please like it and share it.

WHEEL & SPOKE CALCULATIONS

Wheel birth certificate
HUB
L R
Type
Flange to center
Flange diameter
RIM
Type
Effective rim diameter
Max rim tension
LACING
Type
Spoke number
Lacing

Non-drive side spokes:

Drive side spokes:

Total weight:
Hub
Rim
Spokes
Spoke balance index™ i
Left side
Right side
Target tensions™ i
GEOMETRY DETAILS
Parameter Left side Right side
i Tension distribution
i Bracing angle (γ)
i Rim wrap angle (α)
i Flange exit angle (β)
i Theta angle (θ)

LACING CONFIGURATION

Lacing configuration

Spoke placement overview for selected wheel configuration.

LACING DIAGRAM

Left side

Spoke position

i

Right side

Spoke position

i

NOTE: If both checkboxes above are checked (or both are unchecked), the spoke placement is symmetrical. This means leading and trailing spokes follow the same in/out pattern on both sides of the wheel.

INPUT ERROR

Please check the following inputs: