CdA Calculator

Choose temperature, altitude, tires, drivetrain efficiency and calculate the CdA for a given power output and speed.

  Temperature = °C

  Course Altitude = m

  Rolling resistance coefficientcoeff. CRR = 0.00

  Drivetrain efficiency = %

  Weight of rider + bike = kg

  Speed = km/h

  Power = Watt

  •   Temperature = °C

  •   Course Altitude = m

  •   CRR = 0.00

  •   Drivetrain efficiency = %

  •   Weight of rider + bike = kg

  •   Speed = km/h

  •   Power = Watt

  CdA

0 m2

About the CdA calculator

Maybe the name CdA Calculator is a little bit misleading. Since one has to make quite a few assumptions under which this Calculator works maybe the name "CdA Estimator" would be more suitable - but who would Google this Keywords ;-).

To name the most important assumptions: flat course and no head or tailwind. Moreover it is difficult to get accurate numbers for the rolling resistance coefficient and the drivetrain efficiency.

Here you can find a Power to Speed Calculator together with some notes on the calculators and the formulas behind them.

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