- the most reliable RC Calculator on the Web
get your drive right - get the right drive - no more guess work and mispurchase...
For renewal or extension of your membership follow this link...
✓ «The cost for eCalc is even lower then a mispurchase of a propeller only, let alone from a wrong motor, esc or battery...» more testimonials...
more than 83'341'054 setups
calculated and simulated so far.
eCalc - reliable RC
Calculators since 2004
Terms and Conditions:
eCalc is subject to copyright and intellectual property rights.
Your membership is for personal use only. All values are calculated and may deviate from the real. Before flight you have to recheck the actual max. values. They must stay within the manufactuerers limitations.The functionality of eCalc may change without any notice. System outage or unforseen service discountinuation are not refundable. Use of the calculators is on your own risk - We reject any liablity.
Any misuse or extensive use will result in expiration of your membership without refund.
(For usage with commercial intent or commercial use please contact info[at]ecalc for a quote.)
I agree to the terms and conditions for private use only:
With your Payment you accept these terms and our general terms and conditions. Your membership does NOT renew automatically.
VAT: reverse tax procedure applies.
Payment by PayPal account: after clicking on «Buy Now» you will be redirected to PayPal. Choose «Pay with my PayPal account» and login to your PayPal accound. Follow the payment process... At the end follow the link «Return to info[at]ecalc.ch» and your eCalc login details for immediate access will be dispayed.
Payment by Credit Card with PayPal: after clicking on «Buy Now» you will be redirected to PayPal. Choose «Create an Account» and pay easy and secure with your Credit Card. Follow the payment process... At the end follow the link «Return to info[at]ecalc.ch» and your eCalc login details for immediate access will be dispayed.
Note: Your payment is fully handeled by PayPal - we do not store any card details. To decrease credit card fees PayPal did change there policy by Janary 1st 2017. A credit card payment is still possible but only by creating an account.
Some people hesitate do create a PayPal account - why? PayPal offers an extensive and sophisicated security for byers including purchase protection. Think about this: I personaly prefere to have my credit card details at a single place (PayPal) and pay online by PayPal instead of spreading my credit cartd details all over the different web shops.
Payment by Credit Card with Stripe: after clicking on «Pay with Card» a dialog will open requesting your card details. Follow the payment process for immediate access.
eCalc is a Web Application and runs on computers, tablets and smartphones with a state-of-the-art web browser (Microsoft Edge, FireFox, Chrome, Safari and Opera) indepentent of the operating system (Win, iOS, Anreoid, Unix,...).
We refund your membership only in exeptional cases when requested within 3 days of your sign-up. Please email to info[at]ecalc.ch with your username. If refund applies we refund your membership fee less payment fee of PayPal or card fee of Stripe.