Interactive Utilities
CALCULATORS
Work out your numbers. Precision engineering calculators for cadence, gear ratios, recommended tire pressures, and climbing power requirements.
Drivetrain
Gear Ratio & Cadence Calculator
Calculate gear ratio, gear inches, development distance per pedal revolution, and speed across various cadence levels.
Key Inputs
- Chainring teeth
- Cassette cog teeth
- Tire size (e.g. 700x28c)
- Cadence (RPM)
Calculated Outputs
- Gear Ratio
- Gear Inches
- Meters per Development
- Speed (km/h & mph)
Wheels & Tires
Tire Pressure Optimizer
Compute ideal front and rear tire pressures accounting for system weight, rim internal width, and road surface roughness.
Key Inputs
- Rider + Bike Weight
- Tire Width (mm)
- Rim Internal Width
- Surface Type
Calculated Outputs
- Front Pressure (PSI / Bar)
- Rear Pressure (PSI / Bar)
Performance
Climbing Time & VAM Estimator
Model climb completion time, average VAM (Vertical Ascent Meters/hour), and required power-to-weight ratio.
Key Inputs
- Distance (km)
- Elevation Gain (m)
- Average Gradient (%)
- Rider Power (Watts)
Calculated Outputs
- Estimated Time
- VAM (m/h)
- W/kg
Nutrition
Energy Expenditure & Calorie Calculator
Calculate total mechanical work done in Kilojoules (kJ) and corresponding nutritional calorie burn based on power and duration.
Key Inputs
- Average Power (Watts)
- Ride Duration (hh:mm)
- Human Mechanical Efficiency (%)
Calculated Outputs
- Total Work (kJ)
- Caloric Burn (kCal)
- Carbohydrate Target (g/hr)