Calculators & Tools

Fit and sizing

Start with frame size, cockpit setup, kids bikes, and fit comparison before chasing parts.

• Bike Size Calculator By Type Road, gravel, mountain, hybrid, and city bike starting size.
• Kids Bike Size Calculator Child wheel-size starting point from height, inseam, age, and confidence.
• Bike Fit Comparison Tool Compare two bikes by frame and cockpit dimensions.
• Bike Saddle Height Calculator Set a practical saddle-height starting point from inseam.
• Bike Stem Length Calculator See how stem length, angle, and spacers affect cockpit position.
• Bike Handlebar Width Calculator Width starting points for road, gravel, MTB, and commuting.
• Crank Length Calculator Inseam-based crank ranges and common stock lengths.

Tires and wheels

Dial tire pressure, clearance, rollout, sealant, spokes, studs, and wheel computer setup.

• Bike Tire Pressure Calculator Road, gravel, MTB, fat bike, and winter pressure estimate.
• Winter Bike Tire Pressure Calculator Pressure checks for snow, ice, studs, and cold conditions.
• Bike Wheel Circumference Calculator Rollout and cycle-computer circumference estimate.
• Tubeless Sealant Calculator Sealant amount estimate by wheel and tire size.
• Rim Width to Tire Size Compatibility Chart Check rim inner width against planned tire width.
• Spoke Length Calculator Spoke length starting point for common wheel builds.
• Studded Tire Selector Pick a winter tire style by ice, snow, and pavement mix.
• Tire Clearance Checker Check room for wider tires, mud, snow, and fenders.

Drivetrain and maintenance

Check gearing changes, chain wear, derailleur capacity, bolt torque, brake wear, and yearly costs.

• Gear Inches Calculator Compare your chainrings and cassette by gear inches, development, and speed.
• Bike Torque Spec Finder Common bolt torque ranges plus Nm to in-lb conversion.
• Bike Gear Ratio and Speed Calculator Gear ratio, gear inches, cadence, and speed visualizer.
• Fixed Gear and Skid Patch Calculator Fixed gear ratio and skid patch comparison.
• Derailleur Capacity Calculator Chain wrap and max-cog compatibility check.
• Bike Chain Wax vs Lube Calculator Compare yearly drivetrain cost and maintenance time.
• Bike Brake Pad Wear Calculator Estimate inspection and replacement timing.
• Bike Maintenance Cost Calculator Annual service, tire, brake, chain, and tune-up estimate.

E-bike and commuting

Plan battery range, charging, commute time, savings, cargo loads, and trailer margins.

• E-Bike Range Elevation Calculator Estimate range after battery, assist, load, and climbing.
• E-Bike Charging Time and Cost Calculator Charge time and electricity cost estimate.
• E-Bike Battery Replacement Cost Calculator Replacement cost and cost-per-cycle estimate.
• Bike Commuting Time Planner Door-to-door commute timing with stops and prep time.
• Cargo Bike Payload Calculator Passenger and cargo margin checker.
• Bike Trailer Weight Calculator Combined load and trailer safety estimate.

Training and ride planning

Estimate zones, power, calories, climbing time, fueling, water, and bikepacking load.

• Cycling Heart Rate Zone Calculator Zones from max HR, heart-rate reserve, or cycling threshold HR.
• Cycling FTP and Training Zones Calculator FTP, W/kg, and power zone estimate.
• Cycling Power Calculator Watts estimate from speed, grade, wind, weight, and position.
• Bike Calories Burned Calculator Calorie estimate from time, weight, terrain, speed, and effort.
• Stationary Bike Calorie Calculator Indoor cycling calories from time, weight, cadence, and effort.
• Cycling to Steps Calculator Convert cycling time and distance to step-equivalent estimates.
• Bike Pace Calculator Convert ride time and distance into pace, speed, and splits.
• Cycling Climb Time Calculator Climb time estimate from grade, distance, weight, and power.
• Bikepacking Water Capacity Calculator Water capacity estimate by heat, effort, duration, and resupply.

Ownership, storage, and shipping

Estimate resale, lock security, storage footprint, shipping, lighting, and clothing choices.

• Bike Shipping Cost Calculator Billable weight, insurance, oversize, and rough cost estimate.
• Bike Value Calculator Used-bike resale value range and depreciation curve.
• Bike Weight Limit Calculator Total system weight and load margin checker.
• Bike Lock Security Calculator Lock and parking security score.
• Bike Storage Space Calculator Storage footprint and rack-style estimator.
• Bike Light Runtime Calculator Cold-weather light runtime checker.
• Cycling Clothing Temperature Calculator Layer planner by temperature, wind, precipitation, and effort.