Corroba

Citation Converter

Convert any citation into any style.

Got a citation in the wrong style — a professor's example, one copied from another paper, or your own in APA when the assignment wants MLA? Paste it and Corroba re-checks it against real databases and rebuilds it in whichever style you need — accurate, not just re-punctuated.

Re-checked against real databases · always free

How it works

  1. 1

    Paste a citation in any style

    A professor's example, one copied from another paper, or your own in the wrong format — APA, MLA, Chicago, anything.

  2. 2

    We re-check it against real databases

    Corroba looks the source back up in Crossref and via its DOI, then rebuilds the citation from the authoritative record — not just by re-shuffling your text.

  3. 3

    Pick a style, copy the clean version

    Switch between APA, MLA, Chicago, Harvard, IEEE and 10,000+ styles instantly, and copy the correctly formatted result.

Why re-checking beats re-punctuating

Ordinary converters shuffle the text you paste, so a wrong page number, a missing author, or a typo rides straight through into the new style. Because Corroba looks the source back up and rebuilds it from the authoritative record, the converted citation is often more correct than the one you started with— and every verified one is marked, so you know it's real.

Questions

How do I convert a citation from one style to another?
Paste the citation, then choose the style you want. Corroba re-resolves the source against real databases and rebuilds the citation from authoritative metadata, so switching between APA, MLA, Chicago and thousands of other styles is instant and accurate.
Is it more accurate than other citation converters?
Most converters just re-punctuate the text you paste, so any error carries straight through. Corroba re-looks-up the source in Crossref (and via its DOI) and rebuilds the citation from the real record — fixing details along the way. When a source can't be verified, it still converts what you pasted but clearly flags it as unverified.
Which styles can I convert to?
APA, MLA, Chicago (author–date and notes), Harvard, IEEE, Vancouver and over 10,000 other CSL styles, including thousands of journal-specific ones.
Is it free?
Yes — convert up to 20 citations per run, free, with no sign-up.

Starting from a source instead of a citation? Build a citation from a link, DOI, or title → or check a whole bibliography is real →