Bike Gear Calculator
Calculate gear inches and speed estimates for different chainring and cog combinations.
Drivetrain Setup
Wheel & Cadence
Preset Combinations
32T x 52T
Ratio: 0.62 | Inches: 17.8
4.2 mph
@ 80 RPM
32T x 42T
Ratio: 0.76 | Inches: 22.1
5.3 mph
@ 80 RPM
32T x 28T
Ratio: 1.14 | Inches: 33.1
7.9 mph
@ 80 RPM
Results
Gear Ratio
1.14
Gear Inches
33.1
inches per pedal revolution
Speed Estimate
7.9
MPH @ 80 RPM cadence
Related Calculators
Explore more calculators and converters for related scenarios.
speedSpeed Converter
fastfoodCalorie Calculator
straightenLength Converter
percentPercentage Calculator
Related Trackers
Keep your progress organized with matching trackers on SimpleTrackers.io.
editor_choice
Bike Tools & Accessories
Professional-grade tools to maintain and service your bikes like a pro.
Browse Tools