HTML Entity for Uppercase N Double Struck Capital (ℕ)
Beginner
5 min read
Updated: Sep 2026
1 example
Unicode U+2115
Definition
What Is Uppercase N Double Struck Capital?
Uppercase N double struck capital (ℕ) is the Unicode character at U+2115 in Letterlike Symbols. Official name: DOUBLE-STRUCK CAPITAL N — a blackboard-bold N used in mathematical notation, most often for the set of natural numbers.
Remember
Character ℕ
Unicode U+2115
Named entity ℕ (also ℕ)
Hex entity ℕ
Decimal ℕ
CSS escape \2115
Not the same N · Ņ · ℤ
Prefer ℕ in HTML markup (alias ℕ also works). Numeric forms and typing ℕ in UTF-8 also work. Use a math-capable font when the blackboard-bold shape matters.
Using Named Entity: ℕ
Using Hex Code: ℕ
Using HTML Code: ℕ
Using CSS Entity: ℕ
Typed directly: ℕ
Naturals: n ∈ ℕ
How It Works
1. Named:ℕ is the clearest HTML form for U+2115 (from “Nopf” / blackboard-bold letter naming). Alias ℕ produces the same glyph.
2. Hex:U+2115 → ℕ in HTML. Same glyph as the named entity.
3. Decimal: same code point as 8469 → ℕ. Same glyph as hex and named.
4. CSS: use \2115 in content (not an HTML entity). #point::after appends that ℕ after the paragraph text.
5. Typed / math: paste ℕ in UTF-8, or write n ∈ ℕ for a short membership label.
Pitfalls & Tips
Common mistakes when working with U+2115.
vs N
Not a plain capital N
ASCII N (U+004E) is not letterlike. Use ℕ when you need the double-struck naturals symbol.
vs Ņ
Not N with cedilla
Ņ (Ņ) is an accented letter. ℕ is a mathematical letterlike symbol.
vs bold
Not CSS bold
font-weight: bold only thickens a letter. U+2115 is a dedicated double-struck character.
Fonts
Letterlike coverage varies
Some fonts fall back to a plain N. Prefer Cambria Math, STIX, or another math font for ℕ.
CSS vs HTML
Do not mix escapes
\2115 belongs in CSS strings. ℕ / ℕ / ℕ belong in HTML.
Math
Mark math context
For formulas, wrap math in appropriate markup (for example MathML or a math role) so assistive tech can treat it as math.
Compatibility
Browser Support
Double-struck capital N (U+2115) and its entity forms (ℕ, ℕ, ℕ, ℕ, CSS \\2115) are supported in all mainstream browsers. Visible glyphs depend on Letterlike Symbols font coverage.
✓ Universal support
Uppercase N Double Struck Capital (ℕ)
Encode with named, hex, decimal, CSS escape, or type the character — same code point everywhere encoding is supported.
100%Browser coverage
Google ChromeSupported
Yes
Microsoft EdgeSupported
Yes
Mozilla FirefoxSupported
Yes
Apple SafariSupported
Yes
OperaSupported
Yes
Internet ExplorerIE 9+
Yes
U+2115 / ℕFull support
Bottom line: Prefer ℕ in HTML. Use \\2115 only inside CSS content. Do not confuse with plain N or Ņ (Ņ).
Remember
Key Takeaways
Unicode: double-struck N is U+2115 (decimal 8469) — glyph ℕ.
HTML: prefer ℕ (also ℕ) — also ℕ / ℕ.
CSS: use \2115 inside content for generated text.
Meaning:ℕ is natural numbers / blackboard bold — not plain N, not Ņ.
Use ℕ (named), ℕ (hex), ℕ (decimal), type ℕ directly in UTF-8, or the CSS escape \2115 in content. Prefer ℕ in normal HTML. Alias ℕ also works.
U+2115 (DOUBLE-STRUCK CAPITAL N). Hex 2115, decimal 8469. It belongs to Letterlike Symbols (U+2100–U+214F).
Yes. Use ℕ (preferred). Numeric forms ℕ and ℕ also work. HTML5 also defines ℕ for the same character.
No. ℕ is double-struck capital N (U+2115, ℕ). Plain N is U+004E. Ņ is N with cedilla (Ņ, U+0145).
Use it in mathematical notation for the natural numbers (for example n ∈ ℕ), or whenever blackboard-bold N is required — not as a substitute for plain N.
HTML entities (ℕ, ℕ, or ℕ) go in markup. The CSS escape \2115 goes in stylesheet strings (usually content on ::before/::after).
🤔
Did you know?
Double-struck capital N is Unicode U+2115 (decimal 8469) — glyph ℕ in Letterlike Symbols (U+2100–U+214F). HTML5 names it ℕ (also ℕ). Official name: DOUBLE-STRUCK CAPITAL N. In mathematics it usually denotes the natural numbers. Prefer a math-capable font for the blackboard-bold look.
