Use this free DNA and RNA Calculator to analyze nucleotide sequences, count DNA and RNA bases, calculate GC content, find complementary DNA strands, and convert DNA into RNA. It’s a handy tool for students, biology learners, and anyone studying genetics.
Enter a DNA or RNA sequence to count its bases, calculate GC content, and explore complementary or converted sequences.
Choose DNA (A, T, G, C) or RNA (A, U, G, C).
Load a sample sequence to test the calculator.
Spaces and line breaks are ignored. Enter only A, T, G, C for DNA or A, U, G, C for RNA. FASTA headers and other characters are not supported.
Enter a sequence and select Analyze Sequence to see the results.
Example: DNA and RNA Sequence Analysis
Suppose you enter this DNA sequence:
DNA: ATGCGTAC
The calculator returns these results:
- Sequence length: 8 bases
- Adenine (A): 2
- Thymine (T): 2
- Guanine (G): 2
- Cytosine (C): 2
- GC content: 50%
- Complementary DNA:
TACGCATG - RNA transcript:
AUGCGUAC
You can also enter an RNA sequence to count its bases, calculate GC content, find its complementary RNA strand, and convert U to T for a DNA coding-strand equivalent.
Note: This calculator is intended for educational use. Its sequence conversions are simplified and do not account for all biological processes involved in transcription or reverse transcription.