eCalc - electric drive simulation and calculation - the most reliable RC Calculator on the Web

 news - April 22th

We are out of office till May 7th and have only limited access to our emails & system - thanks for your patience

 4/17/17 - Motor database updated: AXI 283x V2 LONG and 28xx Cyclone

4/8/17 - Motor database updated Turnigy NTM PROPDRIVE v2 series

3/28/17 - Motor database updated MAD Components.

1/9/17 - new eCalc Version 6.72 available - What's new?
  - auto langage detection & wattmeter reading
  - propCalc: Est. speed in level flight under partial load
  - propCalc - easy: improved final version
  - xcopterCalc - easy: Beta Version for smart phones
  - and more...
If you have problems to run the new version, please proceed according the General Procedure here...

11/18/16 - Wondering your center of gravity (CG) is correct for your next maiden flight? Verify or evaluate your CG with our new toolbox service cgCalc...

We apprecite your scan's of any article about eCalc you read in your prefered RC Magazine - info[at]


The restricted Demoversion with reduced functionality and 20% random database is for free. Sign-up now and become an eCalc Member today with instant access to the full funcionality and over 8200 predefined components.


These tools may further support you by calculating RC-related tasks:

  • Explanatory videos on eCalc YouTube Channel and published articles (see below).
  • cgCalc: Calculate, evaluate or verify the Center of Gravity (CG), Neutral Point (NP) and Aerodynamic Center (AC) of your airplan before maiden. The only CG Calculator for upto 5 wing panels.
  • control surface moment: calculate the required torque of your servo.
  • decalage: evaluation with some easy measurments on the table.
  • TRUE C Rating: calculate the true perfomance of your battery.
  • wingDesigner4: evaluate and vizualize the center of gravity (CG) of complex wing
  • wingDesigner: evaluate and vizualize the center of gravity (CG) of your wing
  • xcopterDesigner: optimise and visualises your copter design.

published articles

(sorry german only)

about eCalc - drive calculator

Since 2004 eCalc provides web-based quality services to simulate, calculate, evaluate and design electric brushless motor drives for RC pilots of airplane, multi rotor, UAV, helicopter and EDF jets.
eCalc's motor database is the most comprehensive on the web.

Follow us on Twitter @eCalc_e, Facebook Group eCalc or the eCalc YouTube Channel to get the latest news.

Is my Motor available?
Wondering your motor is in the Database? ...check the full motor list. If you motor is missung just provide us with the specifications...

You are a motor manufacurer?
Please send us your specifications or fill in this form and we will update our database with your motors. Thereafter all visitors may use your motors for calculation. This will increase your visibility on the market considerable.

Did you find a bug or data error?
please report to info[at] with detailed discription and screen shot - Thank you.

Missing your Language?
We are looking for experienced RC Pilots willing to translate eCalc from english or german to any other language. Please contact us info[at]

terms & conditions

The private use is granted without restrictions. The copyright applies.

The commercial use without any contract with Solution for All Markus Mueller is expressly prohibited. For the contracted  commercial users the Terms & Conditions applies. 

Interested in a commercial use? Please contact us by email: info[at]

copyright & author's right

All source codes, data, texts, pictures and graphs and their arrangements are subject to copyright and are the intellectual property of Solution for All Markus Mueller. They may neither be copied for forwarding nor used in an amended form or on other websites or servers or any kind of electronic device.

© by Solution for All Markus Müller  -  -  info[at]



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