🚲 Gear Speed Calculator
Speed
Climbing Power
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Speed
Gear #
Realistic
Cadence (RPM)
Wheel / Tire
Custom circ (mm)
Units
mph
km/h
+ Add comparison
Climbing power inputs
watts needed to hold each gear up the grade
Grade (%)
System weight (rider + bike)
kg
lb
Rolling resistance (Crr)
Custom Crr
Position (CdA, m²)
Custom CdA
Target power (W)
0 = off
Air density ρ (kg/m³)
Drivetrain efficiency (%)
Range at a glance
Speed per gear
Power per gear
Gear ladder & overlap
Speed table