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Both calculators run independently — change the inputs on either side to compare results.

Bike Spoke Length Calculator

Calculate the exact spoke length needed for any wheel build from rim ERD, hub flange dimensions, and lacing pattern. Essential before ordering spokes for a custom or replacement wheel.

Rim ERD (Effective Rim Diameter) (mm)

Hub PCD (Pitch Circle Diameter) (mm)

Flange Offset from Center (mm)

Spoke Count

Cross Pattern

Fill in the required fields to see your result.

Cycling

Bike Depreciation Calculator

Estimates the current resale value of a bike by accounting for age, annual mileage, and condition. Use it when buying, selling, or insuring a used bicycle to set a fair price.

Purchase Price ($)

Years Owned (years)

Annual Mileage (km)

Current Condition

Bike Type

Fill in the required fields to see your result.

Key differences

	Bike Spoke Length Calculator	Bike Depreciation Calculator
Category	Cycling	Cycling
Inputs required	5	5
Result	Spoke Length (mm)	Current Market Value ($)
What it does	Calculate the exact spoke length needed for any wheel build from rim ERD, hub flange dimensions, and lacing pattern. Essential before ordering spokes for a custom or replacement wheel.	Estimates the current resale value of a bike by accounting for age, annual mileage, and condition. Use it when buying, selling, or insuring a used bicycle to set a fair price.