Number One vs. #1 – Which is Correct?
“Number one” and “#1” both mean the top rank, first position, or highest priority, but they suit different contexts. Write “number one” in formal prose, educational writing, and sentences; use “#1” in headlines, rankings, labels, notes, and casual communication. Avoid replacing every written phrase with the symbol when clarity matters most.
Number One or #1 – Which is Correct?
Both number one and #1 are correct ways to express the idea of first place, the highest rating, or the most important person or thing. The main difference is style and context.
Number one is the fully written form. It is the better choice in formal writing, academic work, business communication, edited articles, and ordinary sentences. It can function as a noun, adjective, or phrase indicating priority.
#1 is a shortened symbol commonly used in rankings, advertisements, product labels, sports displays, online posts, headlines, and informal notes. It is visually compact but can seem less polished in formal prose. The symbol is often read aloud as “number one.”
The Best Trick to Remember the Difference
Use the formal-writing test: if you would submit the sentence to a teacher, editor, employer, or official organization, write number one. If the text is a ranking, label, sign, chart, headline, or quick note where space matters, #1 is usually appropriate.
A useful swap test is to replace #1 with “first” or “top.” If the sentence still sounds natural and formal with “first” or “number one,” use the written form. For example, “She was the #1 candidate” can become “She was the number one candidate.”
| Word | Part of Speech | Meaning | Example |
|---|---|---|---|
| number one | Noun phrase, adjective, or adverbial phrase | First in rank, highest in importance, or a top priority | Safety is our number one concern. |
| #1 | Symbolic abbreviation | Number one, first place, or top-rated | The song reached #1 on the chart. |
How to Use Number One
Number one is the standard written expression for identifying the first-ranked person, object, choice, or priority. It can describe competition, importance, popularity, quality, or order. The phrase works in both casual and formal English, although it is generally more polished than the symbol #1.
When it appears before a noun as an adjective, it is often written with a hyphen: number-one priority, number-one ranking, or number-one bestseller. When it follows a verb or acts as a noun phrase, it normally does not require a hyphen: “The team finished number one.”
Example 1: Customer safety is the company’s number one priority.
Example 2: The athlete finished number one in the final event.
Example 3: For number one, explain the main argument in your own words.
Etymology of the phrase number one
The phrase number one developed naturally from the use of numbers to indicate order and rank. English speakers began using it not only for the first item in a sequence but also for the best, most important, or highest-status person or thing. The phrase later acquired informal meanings in expressions such as “look out for number one,” meaning to take care of oneself.
How to Use #1
#1 is a compact written symbol for “number one.” It is especially common in rankings, sports results, music charts, product marketing, online content, signage, and short messages. It can mean first place, best-selling, most popular, or most important, depending on context.
In polished paragraphs, spell out number one unless the symbol is part of an official name, chart, design, label, or quoted material. The symbol can also be ambiguous for readers who are unfamiliar with it or who may interpret the hashtag as a social-media marker.
Example 1: This app was rated #1 by users in its category.
Example 2: The runner wore the #1 bib after winning the previous race.
Example 3: The advertisement promotes the product as the #1 choice for busy families.
Etymology of the symbol #1
The symbol # has several historical associations, including the abbreviation “No.” for “number” and the name “number sign.” When placed before the digit 1, #1 became a compact way to write “number one.” Its use expanded through print advertising, sports scoring, charts, telephone keypads, and digital communication.
Related Concepts
Understanding ranking language, abbreviations, and compound modifiers helps clarify when to write number one and when the shorter symbol #1 is suitable.
- Ordinal numbers: Ordinal numbers show position in an order, such as first, second, and third. “Number one” can refer to the first position, although “first” is often the simplest formal alternative.
- Abbreviations and symbols: Symbols shorten words or phrases, but they may be less suitable than fully written forms in formal prose.
- Compound modifiers: A phrase used directly before a noun may need a hyphen, as in “a number-one ranking” or “a number-one priority.”
- Superlative language: “Number one” can express the highest level of quality, popularity, success, or importance, much like “best” or “top.”
Examples from Media and Literature
The following examples demonstrate how the two forms commonly appear in real-world communication:
- News writing: A newspaper article may state that a candidate is “the number one choice among voters” when using a formal editorial style.
- Music charts: A chart graphic may display “#1” beside the song or album currently occupying the top position.
- Sports coverage: A scoreboard or tournament table may use “#1 seed” to save space, while a written report may say “the number-one seed.”
- Advertising: A promotional label may call a product the “#1 brand,” although advertisers should be able to support such claims with reliable evidence.
- Everyday speech and fiction: A character may say that family is their “number one priority,” using the full phrase to emphasize personal importance.
Number One Synonyms
| Synonym | Definition |
|---|---|
| first | Coming before all others in position or order |
| top | Highest in rank, quality, or importance |
| leading | Most successful, influential, or prominent |
| best | Of the highest quality or standard |
| foremost | Most important or prominent; formal in tone |
| primary | Most important or first in priority |
#1 Synonyms
| Synonym | Definition |
|---|---|
| first place | The highest position in a competition or ranking |
| top-rated | Receiving the highest evaluation or rating |
| best-selling | Selling more copies or units than competing products |
| highest-ranked | Placed above all others in a ranking |
| leader | A person, group, or product at the forefront of a field |
Frequently Asked Questions
Question 1: Is “number one” or “#1” correct?
Both are correct. Use “number one” in formal writing and complete sentences; use “#1” mainly in rankings, labels, headlines, advertisements, charts, and informal communication.
Question 2: Should “number one” be hyphenated?
Hyphenate it when it works as a compound adjective directly before a noun, as in “a number-one priority” or “the number-one team.” Do not usually hyphenate it when it follows a verb, as in “The team ranked number one.”
Question 3: Can #1 be used in academic writing?
It is usually better to write “number one” or “first” in academic prose. Use “#1” only when it appears in a source, official label, table, figure, title, or format where the symbol is specifically appropriate.
Conclusion
Number one and #1 express the same basic idea, but they are not equally suitable in every setting. Choose number one for formal, professional, and academic writing, and reserve #1 for compact rankings, labels, charts, headlines, and casual communication. Pro Tip: Using the fully written form when clarity and professionalism matter can strengthen your credibility and protect your professional reputation.
