Bike Cadence and Speed Calculator

Your details

Choose whether you know your cadence and want speed, or know your target speed and want cadence.
The rim bead seat diameter (BSD). 700c and 29" share the same 622 mm BSD.
The tyre section width in millimetres (the number after the hyphen on your sidewall, e.g. 700x25c = 25 mm). This affects the effective rolling diameter.
mm
The number of teeth on your front chainring (the large sprocket attached to the cranks).
teeth
The number of teeth on your chosen rear sprocket. A smaller cog gives a harder, faster gear.
teeth
Your pedaling rate in revolutions per minute. Most road cyclists cruise between 80 and 100 rpm; sprinting peaks above 120 rpm.
rpm
SpeedTempo / brisk
33.5km/h

Ground speed at the entered cadence and gear

Speed20.8mph
Gear ratio2.94
Gear development6.21m
Wheel rollout2,111mm
33.5 km/h
Easy<15Endurance15-25Tempo25-35Race pace35-45Sprint45+

33.5 km/h (20.8 mph) in a 2.94 gear ratio.

  • At 90 rpm in this gear you cover 6.21 m per pedal stroke.
  • Your cadence is in the 70-100 rpm zone, the range most cyclists and coaches consider optimal for sustained riding.

Next stepTo go faster without changing gear, raise your cadence. To cruise at the same speed with less effort, shift to a slightly easier gear and spin faster.

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