BikeSim - Virtual Bike Fit Tool

Welcome to BikeSim!

With BikeSim you can test and simulate different frames and bike settings without the hassle of adjusting or changing the actual components on your bike.

Add Frame

Select frame parameters:

bartype

Stack

Reach

size

Wheels

Seat Tube Length

seat_tube_angle

head_tube_length

head_tube_angle

bb_drop

chainstay_length

wheelbase

Frame Size

Add basic rider measures to show frame sizes
that roughly might fit you.

Rider Height

Rider inseam

Suggested size from height/inseam:

rider_size

Suggested reach (mm) from height/inseam:

rider_reach

Select Frame

Click on frame name below to swap to another frame.

Help | QuickFit | Toggle Frame | Start/Stop

Adjust Settings

Bike

Rider Height

Femur/Thigh-bone

Tibia/Shin

Foot Length

Bike

Frame

Quick Metrics

UBA

KE0

KE180

HA0

FA180

FA90

Click on bars to show details.
Green bar indicates that the angle is within the recommended range. Orange means it's too low, and red means it's too high.

Average from 34 samples.

Chart

For more detailed metrics click here or select 'Chart' in the top-menu.

Summary

Frame
Rider Height
Saddle Height (from crank center)
Seat to Handlebar
Seatpost length
Saddle offset
Stem length
Stem spacers
Cleat position
Crank length
Upper Body Angle	UBA
Knee Extension @ 0°
Knee Extension @ 180°
Foot Angle @ 90°
Foot Angle @ 180°
Hip Angle @ 0°

Chart Metrics

^{1. Curves should be smooth and continuous.
2. If spikes exist, lower the saddle or adjust offset/crank length etc.}
^{3. Short dotted horizontal lines = Optimal intervals.}
^{4. Dotted curves = Data from previous setting.}
^{5. Crank angle 0° = Crank arm @ 12 o'clock.}
^{6. Momentum = Relative momentum of the pedal stroke.}

Restore to Default Settings