Simply inverting a sequence is almost an everyday task. With this little Java tool, it is done in a second. Simply keep this page open in a browser window in the background, and sequence inversions are no longer a problem for you!

Instructions: Paste your DNA sequence into the upper text field, then click “Start”. The program will reverse the sequence. If you check the option “Replace nucleotides by complementary bases”, each base will be replaced by its complementary base (e.g. A replaced by T, G by C).

You can copy the result into the clipboard and paste it into any other program.

We are sorry that you have experienced a problem with one of our online tools. Please enter a problem description and your contact data into the form below. We will then take care of the problem and contact you as soon as possible.

Please use this form only for problem reporting and suggestions, NOT for the sequence optimization.

Of course you can also place suggestions and remarks here, not just problem descriptions.