About the DNA to mRNA Converter

Transcribes a DNA sequence into mRNA, with base-by-base display, validation, and sequence stats.

What it is

Paste a DNA sequence, choose whether it represents the coding (sense) or template (antisense) strand, and the tool transcribes it into the mRNA transcript instantly, following the correct rule for each strand type.

Features

Coding/template modes

Coding strand is copied with T→U; template strand is complemented and read 5'→3'.

Reverse mRNA→DNA

Toggle reverse mode to derive the coding DNA strand from an mRNA sequence.

Base-by-base aligned display

Color-coded monospace output makes the substitution visually obvious.

Validation

Non-ACGT characters are flagged at their exact position, not silently dropped.

GC content & base stats

Sequence length, base counts, and GC/AT percentage shown automatically.

Copy button

Copy the resulting mRNA (or DNA) sequence with one click.

Ready to transcribe?

Free, no sign-up required.

Open the DNA to mRNA Converter