https://rna.urmc.rochester.edu/RNAstructureWeb/Servers/Predict1/Predict1.html

http://rna.tbi.univie.ac.at/cgi-bin/RNAWebSuite/RNAfold.cgi

http://rna.tbi.univie.ac.at/

http://www.rnasoft.ca/

http://unafold.rna.albany.edu/

https://molbiol-tools.ca/Repeats_secondary_structure_Tm.htm

Many on internet,  i want to ask the one of best and easy.... 

My personal favourites are mfold and RNAstructure

Try mFold and RNAfold.  I wrote my own script to send RNA seqs to their server/run on your local computer.  Let me know if you need any help.

Hi there,

There are lots of tools or methods can be used to predict secondary structure of RNAs, such as Mfold,  RNAStructure, Sfold, MC-Fold.......[the following review would be helpful].

Best whishes!

What are the online tools by which I can predict the secondary structure of RNA??? - ResearchGate. Available from: https://www.researchgate.net/post/What_are_the_online_tools_by_which_I_can_predict_the_secondary_structure_of_RNA [accessed Apr 15, 2016].

Article RNA structure prediction: Progress and perspective

https://www.rosettacommons.org/docs/latest/application_documentation/rna/rna-denovo-setup

http://rnacomposer.cs.put.poznan.pl/

https://en.m.wikipedia.org/wiki/List_of_RNA_structure_prediction_software

https://rna.urmc.rochester.edu/RNAstructureWeb/Servers/Predict1/Predict1.html

http://rna.tbi.univie.ac.at/cgi-bin/RNAWebSuite/RNAfold.cgi

http://rna.tbi.univie.ac.at/

http://www.rnasoft.ca/

http://unafold.rna.albany.edu/

https://molbiol-tools.ca/Repeats_secondary_structure_Tm.htm