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RC Calculators

Radio Control Calculator

The Radio Control RC Info Calculator can calculate anything from speed, Power type, to watts per pound for Radio Control RC Boats, Planes and Cars.

Visit the specific RC – Radio Control Section on the above menu bar for more information or to learn how to get the most out of each calculator.

RC General Calculator
– Calculate Max Run Time / average current by providing information based on a shorter duration test.
– Calculate amount of oil to use for a Gas / Oil Mixture.

RC Gear Calculator

– Determine the Diametral Pitch or Metric Module of your gears to determine the needed type of mating gear.

RC Airplane Calculator
– Calculate wing loading, performance style, watts per pount, stall speed, best targeted peak speed
– Determine the amount of torque required on a control surface for selecting proper servo. Based on max speed, surface area and degree of deflection
– Predict Propeller pitch speeds, tip speeds, and prop noise factor.

RC Boat Calculator
– Calculate prop pitch from diameter and pitch ratio
– Predict Speed of Brushless electric powered boat and nitro/gas powered boat
– Confirm a conservative prop selection for a brushless powered electric boat

If you are a new boater who has read all the pages in the Fast Electric section and are still having trouble selecting a Power system / setup or just want additional ideas – Give this fast electric boat setup, power system application a try.

fast electric boat setup, power system calculator

RC Car/Truck Calculator
– Predict Speed for a Brushless Powered Car or Truck
– Predict Speed for a nitro powered Car or Truck


Enter Values in to the empty cells. To complete another calculation, first select the Reset Button to reset all cells. Keep in mind there are minimal checks for incorrect input values. Incorrect Input values will Result in Incorrect Output Values.

All the calculators found on the left hand side bar are for general assistance only. Please use the information wisely and safely. Use at your own Risk.

Car Truck Specs

Car/Truck Specs

CofG Calc Using Scales

This Center of Gravity calculator is based on being able to determine the individual weight per landing gear. We use this to calculate the Center of Gravity ( CofG ) for a tricycle gear configuration. The tricycle gear configuration consists of one nose wheel and 2 main wheels as shown in the image below. To …

Float Plane Calculator

Output after Submission button is clicked will appear above.

RC Airplane Calculator

Enter the Prop Diameter and Pitch in inches (in.) Enter the LiPo cells in series. Example “4” Enter the motor kv provided by the manufacture The Tip and pitch speed of the prop is calculated in km/h. The prop noise category is provided. Prop RPM at max speed is predicted.

RC Boat Calculator

Enter The Loaded RPM of the engine Select the Prop to be used from the drop down menu. Select the Hull type to represent slippage.

RC Boat Propeller Database

RC Car Calculator

Enter the Maximum Loaded RPM Value Enter the amount of teeth for the pinion gear and spur gear Enter the amount of teeth for the pinion hear and spur gear of the differential Enter the diameter of the tires in mm.   

RC Charger Wattage Calculator

RC EDF Calculator

Output after Submission button is clicked will appear above. Enter the values as described on the thrust tube page.Output values will be in the same units as you have entered them in. Do not enter a value in mm and the other in inches. The Case diameter will always be larger than the Hub Diameter.

RC Gear Calculator

RC General Calculator

Enter Fuel in L, and ratio in xx:1. If 25:1 is desired enter 25. Amount of oil to be added in ml is displayed

RC LiPo Battery Power & Configuration Calculator

The power and configuration calculator has been created to assist models in making sure they have all the information they require to purchase application matching battery packs. You may use the calculator to simply run through all the specifications for either one battery pack or two battery packs! To use the RC LiPo Battery Power & …

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