Guidelines for Calculating Length (2024)

Word Count Procedure

The following guidelines can be used to determine the length of a manuscript submitted to the Physical Review journals. The general formula for calculating a manuscript’s length is:

Total Word Count = Text + Displayed Math + Figures + Tables

Guidelines For Letters and Short Papers, Including Comments
TextInclude
  • Any text in the body of the article
  • Any text in a figure caption or table caption
  • Any text in a footnote or an endnote

Exclude

  • Title
  • Author and affiliation listing
  • Abstract
  • Receipt date, published date, and other publication history
  • PhySH Keywords and DOI
  • References
  • Author byline footnotes
  • Acknowledgments
Displayed MathThe word equivalent for displayed math is 16 words per row for single-column equations. Two-column equations count as 32 words per row.
FiguresTo estimate the word equivalent for figures use the figure’s aspect ratio (width / height). The estimate is [(150 / aspect ratio) + 20 words] for single-column figures, and [300 / (0.5 * aspect ratio)] + 40 words for double-column figures.
TablesThe word equivalent for tables is 13 words plus 6.5 words per line for single-column tables. Double-column tables count as 26 words plus 13 words per line.
Guidelines For PRX and Review Articles in PRApplied, PRMaterials, and RMP
TextInclude
  • Any text in the body of the article
  • Any text in a figure caption or table caption
  • Any text in a footnote or an endnote

Exclude

  • Title
  • Author and affiliation listing
  • Abstract
  • Receipt date, published date, and other publication history
  • PhySH Keywords and DOI
  • References
  • Author byline footnotes
  • Acknowledgments
Displayed MathThe word equivalent for displayed math is 16 words per row for single-column equations. Two-column equations count as 32 words per row.
FiguresThe word equivalent for figures is 170 words per figure for single-column figures. Two-column figures count as 340 words per figure.
TablesThe word equivalent for tables is 13 words plus 6.5 words per line for single-column tables. Double-column tables count as 26 words plus 13 words per line.

Counting Words in a TeX File

Authors are advised to use REVTeX 4.2 for the preparation of their manuscript, using the proper journal option (‘prl’ for Physical Review Letters for instance). Manuscripts that fit within the following page limits are likely to conform to the length guidelines: Letters and PRPER Short Papers: 4 pages, Letters: 4 pages for PRB; 5 pages for Physical Review A, C, D, E, Fluids, Materials, and Research. Alternatively, you can determine the word count of a REVTeX 4.2 file by:

  • Commenting out the \maketitle command
  • Using the 'nofootinbib' option
  • Putting an \end{document} before the bibliography
  • Comment out any display equations
  • Commenting out the rows (but not the caption) of any tables
  • Commenting out the acknowledgment

The paper should still run under LaTeX. To get a precise word count, you can then use the wordcount.tex file found at https://ctan.org/tex-archive/macros/latex/contrib/wordcount.

Counting Words in a Word File

To count the number of words in a Word document, make a copy of your manuscript and remove all of the text and other elements that aren’t counted under the guidelines. Then use Word’s built-in word count function.

Determining the Size of Figures

GhostScript can be used to determine the bounding box of Encapsulated PostScript (EPS) and PDF figures:

cat figure.eps gs -q -dSAFER -dBATCH -sDEVICE=bbox -

You can then use the size of the bounding box to figure out the exact width and height of the figure. Various image programs will display the dimensions of JPEG, GIF, PNG, and other types of figure files. Alternatively, you may use a PDF viewer with cropping capabilities to draw a crop box around the figure and read off the dimensions. Finally, you may simply print out the figure and measure its dimensions. The units are arbitrary because the guidelines use the aspect ratio, which is the width/height.

Word Count Limits

The length restrictions for different article types vary among the Physical Review journals. The length limits are given in the following table:

Article Length Limits
PRLLetter
Comment/Reply
3,750 words
750 words
PRXComment/Reply3,500 words
PRX EnergyPerspective
Review article
Tutorial
Comment/Reply
3,000 words
7,000 words
No limit
3,500 words
Length limits for Perspective and Review articles are guidelines. Authors should consult PRX Energy editors if needed.
PRX LifePerspective
Review article
Comment/Reply
3,000 words
7,000 words
3,500 words
Length limits for Perspectives and Review articles are guidelines. Authors should consult PRX Life editors if needed.
PRX QuantumPerspective
Tutorial
Comment/Reply
7,500 words
37,500 words
3,500 words
Length limits for Perspective and Tutorial articles are just a guideline. The authors should consult PRX Quantum editors if needed.
RMPArticle
Colloquium
50,000 words
20,000 words
PRALetter
Comment/Reply
4,500 words
3,500 words
PRBLetter
Comment/Reply
4,500 words
3,500 words
PRCLetter
Comment/Reply
4,500 words
1,500 words
PRDLetter
Comment/Reply
4,500 words
3,500 words
PRELetter
Comment/Reply
4,500 words
3,500 words
PRResearchLetter
Comment/Reply
4,500 words
3,500 words
PRABNo limit
PRAppliedReview Article
Comment/Reply
Letter
30,000 words
3,500 words
3,500 words
PRFluidsLetter
Comment/Reply
4,500 words
3,500 words
PRMaterialsReview Article
Research Update
Letter
Comment/Reply
30,000 words
10,000 words
4,500 words
3,500 words
PRPERReview Article
Comment/Reply
No limit
3,500 words
Guidelines for Calculating Length (2024)

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