Frequently Asked Questions
Everything you need to know about the Codon Table.
What is a codon table?
A reference chart mapping all 64 possible three-base mRNA codons to the amino acid (or stop signal) each one encodes.
How do I use this codon table?
Browse the grid or search by codon, amino acid name, or letter code; click any codon for full details.
Which codon is the start codon?
AUG, which also encodes methionine and signals the ribosome where translation begins.
Which codons are stop codons?
UAA, UAG, and UGA — none of these encode an amino acid; they signal translation to stop.
Can I translate a full mRNA sequence?
Yes, switch to translate mode, paste your sequence, choose a reading frame, and get the amino acid chain instantly.
What if I paste a DNA sequence instead of mRNA?
It's automatically converted to mRNA (T→U) before translation.
Why are codons color-coded?
Start and stop codons are highlighted so you can spot them at a glance.
What does codon degeneracy mean?
Most amino acids are encoded by more than one codon; the detail panel shows how many codons map to the same amino acid.
Is this tool free?
Completely free, no sign-up or downloads.
Does it work on mobile?
Yes, the grid and translate mode are both fully responsive.