Calculator
Enter a DNA sequence using only A, C, G and T. This learning tool returns the complementary strand in antiparallel orientation and a reverse complement in 5′→3′ orientation.
Length8 bases
Complementary DNA (3′→5′)TACGCATG
Reverse complement (5′→3′)GTACGCAT
Complementary RNA (3′→5′)UACGCAUG
GC content50%
Method and input format
DNA Sequence Helper
Formula: A pairs with T; C pairs with G; GC% = (G + C) / total bases x 100
Assumption: The entered sequence is DNA and contains only the standard bases A, C, G and T.
Worked example
DNA Sequence Helper
For 5'-ATGC-3', the complementary strand is 3'-TACG-5' and the reverse complement is 5'-GCAT-3'.