Do You Capitalize With in a Title?

The short answer changes by profile

For the input “life with purpose,” Tool Packer returns “Life With Purpose” in its AP, APA, and New York Times-labeled baseline profiles. It returns “Life with Purpose” in Chicago and MLA. The internal word is the only variable, so this fixture gives a direct answer for the converter instead of mixing the style decision with different title wording.

The split comes from implemented preposition treatment. AP and APA lowercase recognized internal prepositions only through three letters, leaving the four-letter with capitalized. Chicago’s current profile lowercases recognized prepositions through four letters. MLA lowercases recognized internal prepositions regardless of their length. The baseline follows the project’s underlying titlecase engine rather than a separate explicit profile list.

Position can override the internal rule

All five profiles produce “With Purpose Comes Progress” when with opens the title. Tool Packer treats a first word as a title boundary, so a minor word begins with a capital letter regardless of its ordinary internal treatment. The same restart occurs after a colon, em dash, or line break; “a plan: with purpose” becomes “A Plan: With Purpose.”

A final with is also uppercase in all five current profiles. For “someone to travel with,” each produces “Someone to Travel With.” AP, Chicago, and MLA explicitly force the last word uppercase. APA already treats the four-letter word with as major under its length threshold. The baseline engine also capitalizes it in this fixture. Position must therefore be checked before relying on the internal-profile answer.

• Opening: With in every profile.
• Internal: profile-dependent.
• After a recognized subtitle boundary: With in every profile.
• Final: With in every current profile fixture.

With must actually be functioning as the rule assumes

The converter recognizes with as a preposition from its explicit word set. That is a predictable automation rule, but Tool Packer does not parse the entire clause or build a syntax tree. Other short words can change grammatical role more visibly, and a named work, organization, product, or intentionally styled phrase can have authoritative capitalization that should not be normalized mechanically.

Use the explanation option to confirm that the engine classified with as a preposition or boundary word. Preserve a required name with a request-scoped custom term, and compare a quoted or registered title with the source rather than silently restyling it. Capitalization also does not decide whether a title should be italicized, placed in quotation marks, or displayed in sentence case.

• Inspect the word’s position and role.
• Preserve authoritative names and trademarks.
• Handle typography separately from capitalization.

Use the governing style, edition, and house rule

Choose AP, APA, Chicago, MLA, or the baseline because the publisher, instructor, client, or documented workflow calls for it—not because uppercase looks more balanced. Chicago’s eighteenth edition introduced a length-based change for prepositions, so older Chicago examples that lowercase every preposition can disagree with the current Tool Packer profile. MLA’s public guidance continues to describe internal prepositions differently and also limits English headline-style guidance by language context.

Tool Packer is independent and is not affiliated with or endorsed by any named style-guide publisher. Its profiles are transparent deterministic approximations. Consult the current governing source for publication or assessment, record any house-style override, and treat the converter result as an editable draft when grammar, language, an edition, or an official name matters.

• Record which profile produced the result.
• Check edition-sensitive examples against current guidance.
• Let explicit house style take precedence.