Show the inputs
The measurement or assumption behind a result is visible instead of hidden behind a black-box recommendation.
Velopedia Tools
Bicycle Calculators
& Workshop Tools
Practical calculations. Transparent inputs.
Purpose-built tools for wheel building, bicycle geometry and setup, drivetrain service and suspension tuning. Each calculator shows the measurements behind the result and explains how to use it.
01Wheel Building
SpokeMaster
Calculate independent left and right spoke lengths from ERD, hub flange geometry, rim offset, spoke count and lacing pattern.
- Left & right spoke length
- Bracing angle
- Asymmetric rim support
02Bike Setup
Tire Pressure
Estimate independent front and rear starting pressures from system load, mounted tire width, wheel size, terrain, casing and air system.
- Front & rear pressure
- PSI & bar
- Tire/rim limit checks
03Drivetrain
Gear Ratio
Analyze chainring and cassette combinations using ratio, gear inches, development, speed at cadence, overall range and cassette jumps.
- Complete gear table
- Range & cassette jumps
- Speed at cadence
04Suspension
Suspension Setup
Calculate fork and rear-shock sag targets, compare measured sag, evaluate balance and work through common ride-feel symptoms.
- Fork & shock sag
- Air & coil support
- Symptom-based tuning
05Drivetrain Service
Chain Length
Estimate the chain path from drivetrain geometry, account for maximum suspension chain growth and turn manufacturer add-link instructions into a cut-ready worksheet.
- Geometry baseline
- Suspension check
- Stock-chain cut count
06Geometry
Bike Geometry
Calculate mechanical trail, wheel and bottom-bracket height, wheelbase relationships and reach/stack proportions from published or measured geometry.
- Mechanical trail
- Wheelbase & centers
- Reach / stack
07Fit & Position
Bike Fit
Establish a transparent saddle-height baseline, compare a measured setup and calculate repeatable saddle-to-handlebar contact-point coordinates.
- Saddle baseline
- Reach & drop
- Fit coordinates
How Velopedia approaches tools
Useful numbers need context.
Respect the hardware
Manufacturer limits and component-specific setup instructions override generalized calculations whenever they apply.
Give a starting point
Setup tools explain what to change next so a calculated number becomes part of a repeatable workshop process.
Velopedia Tools complements the technical encyclopedia and historical Bike Archive with calculators intended for riders, mechanics and anyone working through bicycle setup.