Free Tools

Free to all registered users. No paid subscription or credit card required.

Fit Kit Studio offers a variety of free tools and resources to support your bike fitting work. Explore the calculators below, with illustrated measurement references to guide your inputs.

Quick Size

Bike sizing recommendations from body measurements.

Bar XY to Frame XY

Calculate frame reach and stack from handlebar position and the stem and headset setup.

Frame XY to Bar XY

Calculate handlebar position from frame reach and stack and the stem and headset setup.

Stem Delta Calculator

Compare current and proposed stem setups to see the change in handlebar position.

XY to Polar Conversion

Convert horizontal and vertical coordinates to a distance and angle.

Polar to XY Conversion

Convert a distance and angle to horizontal and vertical coordinates.

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