How to Add Letters to Page Numbers in Microsoft Word

To add a letter such as A- before page numbers in Word, insert page numbers in a header or footer, then type the letter and a separator immediately before the page-number field. The number will update as pages are added or removed. If different parts of the document need different letters, use section breaks so each section can have its own prefix.

This is useful for appendices, front matter, exhibits, or documents whose pages need labels such as A-1, A-2, B-1. The directions below are for Word for Microsoft 365 on Windows. Word for Mac has similar controls, though some ribbon labels and shortcuts can differ.

What You’ll Need

A Word document with page numbers to add or change.
The letter or lettering scheme you want, such as A-1 or App A, page 1.
For different letters in different parts of the document, a plan for where each section begins.

Step-by-Step

Decide whether the letter applies everywhere. If every page should have the same letter, such as A-1 through A-20, you can add a prefix to one header or footer. If one part should use A-1 and another should use B-1, make each part a separate section. A section is not the same as a page: it is a document area with its own header, footer, and page-number settings.
Insert page numbers if the document does not have them yet. In Word for Windows, select Insert > Page Number, then choose Top of Page or Bottom of Page and select a layout. Choose a position and style that leave room for the letter. If numbers are already present, keep them and proceed to the next step. On Mac, use Insert > Page Number and select the position and format in the dialog or menu.
Open the header or footer for editing. Double-click the area containing the page number. Word displays the Header & Footer tab while the area is active. If you chose a top-of-page number, edit the header; if you chose a bottom-of-page number, edit the footer. You can also use Insert > Header or Insert > Footer to open the relevant area.
Place the cursor before the page number. Click immediately to the left of the number. If the number is right-aligned, the cursor can be hard to place: use the arrow keys to move through the header or footer until the insertion point is just before the number. Avoid selecting and replacing the number itself. It is usually a field, which Word updates automatically.
Type the letter and separator. Enter the prefix you want, for example A-, App A, page , or Exhibit B-. The result might read A-1. Add a space after the prefix if that looks better, as in A 1. Do not type a sample page number in place of the existing number; leave the page-number field in place so it can update.
Check the layout and alignment. Click outside the header or footer, or choose Close Header and Footer. Look at several pages, including a page with a two-digit number. If the prefix and number need to sit together, select both and apply the same alignment using Home > Align Left, Center, or Align Right. If the number was inserted in a preformatted layout, the prefix may inherit its alignment automatically.
Create sections for different letter prefixes. Put the cursor at the end of the content before the next lettered part. Select Layout > Breaks > Next Page to begin a new section on the following page. Repeat at each boundary where the prefix changes. A page break alone is not enough: it moves text but does not give that part an independent header or footer.
Unlink the new section’s header or footer. Double-click the header or footer in the new section. On the Header & Footer tab, select Link to Previous to turn it off if it is active. This prevents changes in the new section from being copied to the previous one. Check the header and footer separately if your page number is in one of them and you have other content in the other.
Change the prefix and, if needed, restart numbering. In the new section, replace the old letter with the new one, such as changing A- to B-. To restart the number at 1, select Page Number > Format Page Numbers, choose Start at, enter 1, and select OK. If the numbering should continue from the preceding section, leave the setting at Continue from previous section. Repeat for each section, then review the transitions between them.
Use automatic chapter letters when the labels follow numbered headings. This is useful when chapter or appendix letters may change. First number the relevant headings: use Home > Multilevel List and choose or define a list linked to the Heading 1 style, with letter labels such as A, B, C. Then open the page-number format settings through Insert > Page Number > Format Page Numbers and select Include chapter number. Choose the heading style used for the chapter and a separator. Word can then combine the chapter label and page number. If the option is unavailable, the headings probably are not numbered using a supported heading style. Mac controls may be arranged differently, but use the page-number format options and a numbered heading style.

Common Mistakes

Typing over the number. A page number is normally a field, not ordinary text. If you delete it and type 1, every page can show the same fixed digit. Add the letter beside the field instead, or reinsert the number with Insert > Page Number.

Using a page break instead of a section break. A page break starts text on a new page but does not provide separate page-number formatting. Use Layout > Breaks > Next Page where the letter changes.

Forgetting Link to Previous. A new section often inherits the preceding section’s header and footer. If you edit the prefix before unlinking, you may change the earlier section too. Turn off Link to Previous before making section-specific changes.

Restarting numbers unintentionally. A new section does not always need to start at 1. Check Format Page Numbers and choose either Continue from previous section or Start at to match the document’s intended sequence.

Tips

Use a consistent separator throughout the document. A hyphen in A-1 is compact; a comma and label, such as Appendix A, page 1, is more descriptive.
Preview both the first and last page of each section. A prefix can fit on a one-digit number but become crowded beside page 10 or 100.
If the page number should be omitted on a title page, use Different First Page on the Header & Footer tab. Check whether the remaining pages still have the intended letter and numbering.
Save a copy before restructuring a long document with section breaks. Headers, footers, and numbering can be difficult to restore if several sections are changed at once.
For a fixed prefix, plain text beside the page-number field is the simplest option. Use automatic chapter numbering only when the letter should be drawn from numbered headings and update with them.

Troubleshooting

The letter appears on every section. Open the section where it should differ, double-click its header or footer, and check Link to Previous. Turn it off, then edit the prefix in that section. If the page number is in a different area, such as the footer rather than the header, unlink that area too.

The number is the same on every page. The digits may have been typed as regular text rather than inserted as a page-number field. Delete the fixed digits, then use Insert > Page Number to insert a field in the correct position. Add the letter before the field afterward.

Page numbering does not restart at 1. Click in the affected section’s header or footer, then open Page Number > Format Page Numbers. Select Start at and enter 1. Confirm that the section has its own page-number settings and is not simply part of the preceding section.

The Include chapter number option is missing or produces the wrong letter. Word needs numbered headings based on a heading style, typically Heading 1. Apply that style to the chapter or appendix headings, link the multilevel list numbering to the style, and then revisit the page-number format settings. A letter typed into a heading as ordinary text may not be recognized as a chapter number.

The prefix is separated from the page number or moves around. The header or footer may contain tabs or a table used by its original design. Click around the number to find the field and place the prefix in the same cell or text area. Check the layout on pages with longer numbers and adjust tab stops or alignment rather than adding repeated spaces.

Frequently Asked Questions

Can I add a letter before page numbers without changing the numbers?
Yes. Type the letter and separator immediately before the existing page-number field. The field continues to update as the document’s page count changes.

Can I use a suffix, such as 1A, instead of A-1?
Yes. Click after the page-number field and type the suffix, or place the cursor there with the arrow keys. Check that the suffix stays beside the number in the header or footer layout.

Can different appendices have different letters?
Yes. Start each appendix in a new section, turn off Link to Previous in its header or footer, and enter its letter. Set each section to start at 1 if that is the required numbering scheme.

Will the letter update automatically if I change an appendix heading?
Only if the prefix is generated from automatic chapter numbering. A letter typed manually beside the page field will stay as typed. For automatic labels, use numbered headings linked to a heading style and enable Include chapter number.

How do I remove the letter but keep page numbers?
Open the header or footer, select only the prefix text, and delete it. Leave the page-number field intact. If the letter is coming from chapter numbering, turn off Include chapter number in the page-number format settings instead.

Try it: the Date Difference Calculator: days, months, years and weekdays between two dates, with the DATEDIF formulas.

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