How to Format 3-Line Academic Tables in Word

If you are preparing a manuscript for submission to an academic journal (such as Nature, IEEE, Elsevier, Springer, PLOS) or formatting a master's thesis or doctoral dissertation, you have likely encountered the requirement for 3-line tables (often called formal academic tables or APA-style tables).

Unlike typical office grids, professional academic tables strictly prohibit vertical lines and use only three primary horizontal boundaries to present data with maximum clarity and minimal visual clutter.

What is a 3-Line Academic Table?

A true academic 3-line table consists of three distinct horizontal rules:

• Top Border (1.0–1.5 pt): Positioned at the very top of the table above column headers.
• Mid / Header Border (0.5–0.75 pt): Positioned directly below the column headers to separate metadata from the dataset.
• Bottom Border (1.0–1.5 pt): Positioned beneath the final row of data, directly above any table notes or source attributions.
• Zero Vertical Lines: No left, right, or internal vertical borders are permitted.

Step-by-Step: Formatting 3-Line Tables in Microsoft Word

Step 1: Strip Default Grid Borders

Select the entire table by clicking the four-way crosshair icon in the top-left corner of the table. From the top ribbon, navigate to the Table Design tab, click the Borders dropdown menu, and select No Border.

Step 2: Apply the Top and Bottom Boundaries

With the entire table still highlighted:

1. In the Table Design > Borders dropdown, select Top Border.
2. Click the dropdown again and select Bottom Border.
3. Tip: To match APA 7 or journal specs, ensure the line weight in the ribbon is set between 1 pt and 1.5 pt.

Step 3: Apply the Header Separator

Highlight only your header row (the top row containing your column labels). Open the Borders dropdown and select Bottom Border. (Set the line weight to 0.75 pt for a clean typographic contrast).

Table Borders

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Figure 1: Microsoft Word Table Design ribbon with Borders dropdown open showing border optionsClose

Figure 1: Figure 1: Use Table Design > Borders to remove default grids, then selectively apply top, bottom, and header rules.

Solving Critical Word Formatting Issues

1. Prevent Rows from Splitting Across Pages

When a table row spans two pages, half a sentence or number can end up severed across a page break. In Microsoft Word:

1. Select the entire table and right-click to open Table Properties.
2. Select the Row tab.
3. Uncheck the box labeled "Allow row to break across pages".
4. Click OK.

2. Repeat Column Headers Across Multiple Pages

If your table is longer than a single page, journals require column headers to appear automatically at the top of every subsequent page.

1. Highlight only the top header row of your table.
2. Right-click and select Table Properties > Row (or click Repeat Header Rows in the Layout ribbon tab).
3. Check the box labeled "Repeat as header row at the top of each page".

Row Pagination

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1Uncheck 'Allow row to break across pages'

2Check 'Repeat as header row at the top of each page'

Figure 2: Microsoft Word Table Properties dialog Row tab showing row break and header repeat checkboxesClose

Figure 2: Figure 2: In Table Properties > Row, uncheck 'Allow row to break across pages' and check 'Repeat as header row at the top of each page'.

1Uncheck 'Allow row to break across pages'

2Check 'Repeat as header row at the top of each page'

3. Align Numbers by Decimal Point

Academic standards require numbers in data columns to align vertically by decimal point rather than being centered.

1. Highlight the data column containing decimal numbers.
2. Click the small tab selector icon at the far-left intersection of Word's horizontal and vertical rulers until the Decimal Tab icon (an inverted T with a dot) appears.
3. Click on the horizontal ruler above the column at the exact spot where the decimal points should align.

Decimal Alignment

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1Decimal Tab alignment selected

2Tab stop position configured on ruler

Figure 3: Microsoft Word ruler showing decimal tab marker and Format Tabs dialog alignment settingsClose

Figure 3: Figure 3: Set a Decimal Tab stop on Word's horizontal ruler or use the Tabs dialog to align data points precisely by decimal point.

1Decimal Tab alignment selected

2Tab stop position configured on ruler

Journal & Style Standards Quick Reference

• APA 7th Edition: Table number in bold on line 1 (e.g., Table 1). Title one double-spaced line below in italic title case. Note section beneath the table starting with italicized Note.
• Nature Portfolio: Minimalist tables with short descriptive title above. All footnotes and statistical definitions (e.g., standard deviation, p-values) defined directly below. See our Nature Formatting Guide.
• IEEE Transactions: Table titles centered in small caps above the table (e.g., TABLE I). See our IEEE Manuscript Guide.
• University Dissertations: Ensure compliance with specific handbook requirements for margin clearance and landscape table orientation. Browse our index of 150+ Verified University Guidelines.

Looking for more manuscript layout help? Check out our guides on continuous line numbering in Word and Elsevier Your Paper Your Way guidelines, or browse formatting specs across 150+ universities.