Quick Answer
Why "Math" Stays Lowercase
The capitalization rule for school subjects is straightforward: capitalize languages and proper nouns, lowercase everything else. Math isn't derived from a country, region, or person's name – it comes from the Greek mathēma (meaning "learning") – so it stays lowercase.
This is exactly the distinction that confuses people. "English" is capitalized because it derives from "England." "French" from "France." "Algebra" from the Arabic mathematician al-Khwārizmī's work – but the word has been fully absorbed into English as a common noun, so it stays lowercase.
"Math," "mathematics," "algebra," "geometry," "calculus," "statistics" – all lowercase in running text. They're fields of study described by common nouns, just like "history," "biology," and "psychology."
Quick Rules
Capitalize when
- It's a specific course name: She enrolled in Math 120.
- It's part of an official department or program name: the Department of Mathematics
- It starts a sentence: Math was her strongest subject.
- It appears in a title or heading (title case rules apply)
Keep lowercase when
- Referring to the subject generally: He studied math in college.
- Using it as a modifier: a math teacher, math homework, math skills
- Comparing it to other subjects: She prefers math over science.
- Writing about it informally: I'm not great at math.
Tip: Course names with numbers are proper nouns – capitalize them. The subject by itself is not.
School Subjects: What Gets Capitalized?
A quick reference that clarifies the full pattern, since "is [subject] capitalized?" is one of the most common grammar searches.
Languages are always capitalized because they derive from proper nouns: English, Spanish, French, Mandarin, Arabic, Latin. This applies whether you're talking about the language or the school subject.
Everything else stays lowercase: math, science, history, biology, chemistry, physics, art, music, physical education. These are common nouns describing fields of study.
The exception for all subjects is a specific course name with a number or official title: History 301, Introduction to Biology, Advanced Placement Chemistry. In these cases, you're using the proper name of a specific course, not the general subject.
Examples
✓ Do
- She scored highest in math and science this semester.
- Math 240: Differential Equations starts in January.
- The math department hired two new instructors.
- He decided to major in mathematics.
✗ Do not
She's always been good at Math.
General subject reference is lowercase: She's always been good at math.
He teaches Mathematics at the university.
General reference, not official department name: He teaches mathematics at the university.
I need to take math 101 next semester.
Specific course name is a proper noun – capitalize: I need to take Math 101 next semester.
Edge Cases Worth Knowing
These are the scenarios where "math" capitalization causes the most confusion.
- "Mathematics" vs. "math." Same rule for both. "Mathematics" is the full word, "math" (or "maths" in British English) is the shortened form. Neither is a proper noun: She studied mathematics at Oxford.
- Department names. Style guides vary here. AP lowercases department references unless it's the official proper name: the math department vs. the Department of Mathematics at MIT. Chicago follows the same pattern. When in doubt, lowercase.
- STEM and STEAM. These acronyms are capitalized because they're abbreviations: Science, Technology, Engineering, and Mathematics. But when you expand the words, only capitalize if they're at the start of a sentence or in a title.
- Math-related fields. All lowercase as general subjects: algebra, geometry, trigonometry, calculus, statistics, number theory. Capitalize only as part of a specific course name: Calculus II.
- AP and IB courses. "Advanced Placement" and "International Baccalaureate" are proper nouns (program names), so capitalize those words. The subject following them is part of the course name too: AP Mathematics, IB Mathematics: Analysis and Approaches.
Frequently Asked Questions
Writing a title with "math" in it? Our free Title Case Converter applies the right capitalization rules for AP, APA, Chicago, and MLA styles.
Open the converter with a prefilled example and adapt it to your headline.
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About Sophia Stewart
Sophia Stewart develops practical capitalization guidance for editorial and SEO workflows, with a focus on consistent rule application.
