Enter the wheel diameter, tire size, number of chaining teeth, number of cog teeth, and cadence to determine your estimated bike speed.

## Bike Speed Formula

The following formula is used to calculate the speed at which you are riding your bike.

V = pi * (D + (2 * T )) * (CH/COG) * CA

- Where V is your bike speed (mph)
- D is the wheel diameter (in)
- T is the tire size(thickness) (in)
- Ch is the number of teeth in chain
- COG is the number of teeth in the COG
- CA is your cadence (RPM)

## Bike Speed Definition

Bike speed is defined as the velocity of a bike based on the RPM or cadence of the biker and the bikes physical characteristics.

## Bike Speed Example

How to calculate bike speed?

**First, determine the wheel diameter.**Measure the wheel diameter.

**Next, determine the tire size.**Measure the tire thickness.

**Next, determine the number of teeth.**Measure the number of teeth in the chain.

**Next, determine the number of teeth in the COG.**Measure the teeth in the COG.

**Next, determine the cadence.**Calculate your cadence in RPM.

**Finally, calculate the bike speed.**Use the equation above to calculate the bike velocity.

## FAQ

**How do i know how fast i’m riding my bike?**

The best and most accurate way is to measure your speed through the use of a radar gun. Since that is not available to most people, the next best option is using the formula above.

**How do i bike faster?**

Biking faster involves increasing your cadence (RPM) or increase the ratio of teeth in the cog to total teeth (aka going up in a gear) all while keeping cadence steady.

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