🧬 DNA to mRNA Converter
Build a short DNA coding-strand sequence base by base and see the mRNA strand it transcribes into, along with its complementary strand and GC content.
What this calculator does
Transcription is the process where a segment of DNA is used as a template to build a matching strand of messenger RNA (mRNA). This tool lets you build a short DNA coding-strand sequence, base by base, and shows the mRNA transcript that would be produced from it, along with its complementary DNA strand and basic sequence statistics.
How the conversion works
The mRNA transcript is generated from the DNA coding (sense) strand by keeping every base the same except thymine (T), which is replaced with uracil (U) — the base unique to RNA. The complementary strand shown is the base-pairing partner strand of your input (A pairs with T, C pairs with G), which in a real cell is closer to the template strand actually read by RNA polymerase. GC content is the percentage of guanine and cytosine bases in your sequence, and codons are non-overlapping groups of three bases, the units later read during translation.
Good to know
This is a simplified educational model of transcription meant for general learning purposes. Real transcription is directional (5′ to 3′) and involves reading the template strand in reverse, plus additional processing steps such as splicing and capping in eukaryotic cells, which this tool does not simulate.