To convert references to IEEE format, replace author-date citations with numbers in square brackets, renumber them in order of first use, and rewrite each reference in IEEE's element order.
This guide walks through the full conversion from APA, MLA and Harvard, with before-and-after examples, a checklist and the mistakes that most often slip through.
What Changes When You Convert to IEEE
- In-text citations become numbers in square brackets, such as [1], placed before punctuation.
- Sources are numbered in the order you first cite them, not alphabetically.
- Author names become initials followed by surname: A. B. Smith.
- Article titles go in quotation marks; journal and book titles in italics, with journal names abbreviated.
- The date moves towards the end of the reference.
Why You Might Need to Convert to IEEE
IEEE style is standard in electrical engineering, electronics, computer science and many technical fields. You may need to convert when you move a paper from a general module to an engineering one, or prepare coursework for an IEEE conference or journal.
It also happens when a reference manager exports the wrong style, or when you reuse notes written for another course. Converting by hand is slow, so a methodical order of work saves time.
Manual Conversion or a Reference Manager?
If your sources are already stored in Zotero, Mendeley or EndNote and linked to your document, switching the style to IEEE renumbers everything automatically. That is the fastest route, but only as good as the stored data.
If your citations were typed by hand, you need the manual method below. Many students combine both: rebuild the entries in a reference manager, then insert the numbered citations as they go.
Key Differences Between IEEE and Author-Date Styles
| Feature | APA 7 / Harvard | MLA 9 | IEEE |
|---|---|---|---|
| In-text citation | (Lee, 2021) | (Lee 45) | [1] |
| List order | Alphabetical | Alphabetical | Order of first citation |
| Author names | Lee, J. K. | Lee, Jin Kyu. | J. K. Lee |
| Date position | After authors | Near the end | Near the end |
| Article title | Plain, sentence case | Quotation marks, title case | Quotation marks |
| Journal name | Italic, full | Italic, full | Italic, abbreviated |
| Volume and issue | 13(2) | vol. 13, no. 2 | vol. 13, no. 2 |
| List heading | References | Works Cited | References |
Seven Steps to Convert a Paper to IEEE
- Number the citations: read the paper from the start and give each new source the next number at its first citation.
- Replace in-text citations: swap every author-date citation for its number in square brackets.
- Reuse numbers: a source cited again keeps its first number throughout.
- Reorder the list: arrange references by number, not by author.
- Rewrite names: initials first, then surname, for each author.
- Rebuild each entry: follow IEEE's element order for the source type.
- Check both directions: every number points to an entry, and every entry is cited.
Do steps 1 to 3 on a copy of your paper. Keep the original until the conversion is checked, in case a citation is lost.
Handling Author Names in the Sentence
IEEE citations are numbers, so sentences that relied on a parenthetical author need a small rewrite. "Studies show this (Lee, 2021)" becomes "Studies show this [1]". If you want to name the author, write "Lee [1] showed this".
Before (APA): Battery life limits field sensors (Mensah et al., 2021; Ruiz & Tanaka, 2022). Okafor and Lindgren (2020) suggest duty cycling, while Mensah et al. (2021) favor energy harvesting.
After (IEEE): Battery life limits field sensors [1], [2]. Okafor and Lindgren [3] suggest duty cycling, while Mensah et al. [1] favor energy harvesting.
Mensah is [1] because it was cited first, and it keeps that number when it returns in the second sentence. Okafor and Lindgren becomes [3] because it is the third new source to appear.
Several sources together appear as [1], [3], [5], or as a range such as [2]–[4]. Do not write [2-4] inside one bracket.
Converting APA to IEEE
APA puts the year straight after the authors and uses sentence case for article titles. In IEEE the year moves to the end and the article title gains quotation marks.
APA 7: Mensah, A., Liu, Y., & Fischer, D. (2021). Low-power sensor networks for crop monitoring. IEEE Sensors Journal, 21(4), 5012–5020. https://doi.org/10.xxxx/xxxxx
IEEE: [1] A. Mensah, Y. Liu, and D. Fischer, "Low-power sensor networks for crop monitoring," IEEE Sensors J., vol. 21, no. 4, pp. 5012–5020, Feb. 2021, doi: 10.xxxx/xxxxx.
Note the serial comma before "and", the comma inside the closing quotation mark and the "doi:" prefix without the https:// part. The month appears in abbreviated form when known. The authors and DOI are invented for illustration.
Converting MLA to IEEE
MLA writes the first author's surname first and the full given names. IEEE uses initials for every author and lists them all in natural order.
MLA 9: Okafor, Ngozi, and Peter Lindgren. Embedded Systems Design. 3rd ed., Northgate Press, 2020.
IEEE: [2] N. Okafor and P. Lindgren, Embedded Systems Design, 3rd ed. Leeds, U.K.: Northgate Press, 2020.
IEEE book references traditionally include the place of publication before the publisher. Add it from the book's title page if your MLA entry left it out.
Converting Harvard to IEEE
Harvard is the closest to IEEE in its details, but it is still author-date. The main changes are numbering, name order and moving the year.
Harvard: Ruiz, M. and Tanaka, H. (2022) 'Edge computing in rural clinics', Proceedings of the International Conference on Health Informatics, Lisbon, pp. 88–95.
IEEE: [3] M. Ruiz and H. Tanaka, "Edge computing in rural clinics," in Proc. Int. Conf. Health Informatics, Lisbon, Portugal, 2022, pp. 88–95.
Conference papers in IEEE take "in" before the proceedings title, which is abbreviated using standard words such as Proc., Int., Conf. and Symp.
Converting Websites and Online Sources
Online sources are where conversions most often go wrong. IEEE adds "Accessed:" with the date and the label "[Online]. Available:" before the URL.
APA 7: International Energy Agency. (2023, June 1). Solar power outlook. https://www.example.org/solar
IEEE: [4] International Energy Agency, "Solar power outlook," Jun. 1, 2023. Accessed: Feb. 3, 2025. [Online]. Available: https://www.example.org/solar
Record the date you accessed each page as you research. Recreating access dates afterwards is guesswork.
Authors, Et Al. and Abbreviations
IEEE lists up to six authors in full. For seven or more, give the first author followed by "et al." in the reference. Within the text, you can write "Mensah et al. [1]" when naming a multi-author work.
| Full journal title | IEEE abbreviation |
|---|---|
| IEEE Transactions on Power Electronics | IEEE Trans. Power Electron. |
| IEEE Transactions on Industrial Electronics | IEEE Trans. Ind. Electron. |
| IEEE Communications Magazine | IEEE Commun. Mag. |
| Proceedings of the IEEE | Proc. IEEE |
For non-IEEE journals, use the abbreviation listed in the journal's own guidance or a standard abbreviation list. Never invent one.
Common Conversion Mistakes
| Mistake | Fix |
|---|---|
| Reference list left alphabetical | Reorder by order of first citation |
| New number for a repeated source | Reuse the source's original number |
| Citation placed after the full stop | Place [1] before punctuation, inside the sentence |
| Surnames still first | Write initials first: J. K. Lee |
| Year left after the authors | Move it towards the end of the entry |
| Full journal names | Use standard abbreviations |
Our free citation generator builds IEEE references from a DOI or URL, which helps when you rebuild entries one by one. Renumbering across a long paper still needs a careful manual check.
How Bibloq Helps with Converting to IEEE
Send your paper with its current citations in any style. An editor renumbers every in-text citation in order of first use, rewrites each reference in IEEE format, abbreviates journal titles and checks that numbers and entries match.
You get a clean copy and a tracked version. Free revisions are included within the scope of your original request.
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Frequently Asked Questions
By the order in which you first cite them in the text. The first source you cite is [1], the next new one is [2], and so on.
Yes. A source keeps the same number every time you cite it.
Inside the sentence, before any punctuation, for example "as shown in [3]."
Up to six in full. For seven or more, list the first author followed by "et al."
Yes. Use standard abbreviations such as IEEE Trans. Ind. Electron. for IEEE Transactions on Industrial Electronics.
List each number in its own brackets, separated by commas, such as [1], [4], or use a dash for a range, [2]–[5].
IEEE uses a numbered reference list headed "References" that contains only works you cited.
Yes, if your stored data is accurate. Check the output, especially abbreviations, access dates and conference details.
Yes. IEEE adds "Accessed:" followed by the date, then "[Online]. Available:" and the URL.
"References". The list is numbered with the citation numbers in square brackets, aligned to the left of each entry.