Bio Calculator is a free biological calculator software written for Windows. An intuitive interface with convenient features for basic calculation of the nucleic acids (single stranded and double stranded RNA, DNA and oligos), protein and ...

Please find the latest version at  Bio Calculator v1.02

 

In addition, if you are interested in calculating the complementarity and similarity between the DNA oligos you may use the following python codes;

Complementarity  between unlimitec number of oligos: http://software.nanodetails.com/python code for complementarity check.html

Similarity  between unlimitec number of oligos: http://software.nanodetails.com/python code for similarity check.html