Sequence Formatter & DNA/RNA Converter
Clean, case-convert, wrap, reverse and convert between DNA and RNA.
🔒 Runs entirely in your browser — nothing is uploaded
Clean up and reformat messy sequences in seconds: change case, wrap lines to a fixed width, strip numbers, spaces and gap characters, reverse the sequence, or convert between DNA and RNA. Perfect for tidying sequences copied out of papers, alignments or database records before you analyse them.
Formatted sequence
Result appears hereHow to use the Sequence Formatter tool
- 1Paste the sequence you want to clean or convert.
- 2Toggle the options you need — case, line wrap, remove gaps/numbers, DNA⇄RNA.
- 3Copy the cleaned, correctly formatted sequence.
Frequently asked questions
- Can it clean messy pasted sequences?
- Yes — it can strip numbers, spaces and gap characters that often come from alignments or copied records, leaving a clean sequence.
- How do I convert DNA to RNA?
- Enable the DNA→RNA conversion option; every T becomes U (and case is preserved). RNA→DNA converts U back to T.