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Double-Struck Text Generator

Type your text and get double-struck (blackboard bold) letters and digits instantly, including the official ℂ ℍ ℕ ℙ ℚ ℝ ℤ characters used in mathematics. Copy and paste them anywhere.

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Works in Instagram, TikTok, X (Twitter), Facebook, Discord, YouTube and most apps that accept emoji. These are Unicode characters, not formatting, so screen readers may not read them as normal words: use them for short decorative text.

How to use the Double-Struck Text Generator

Type or paste your text into the box.
Compare the styles: the main double-struck version is at the top, other variations below it.
Press Copy next to the style you like.
Paste it into your bio, caption, post, comment or chat.

How double-struck (blackboard bold) text works

Double-struck letters, also called blackboard bold, imitate the way mathematicians write bold letters on a blackboard by doubling one stroke. Mathematics uses them for number sets: ℕ (natural numbers), ℤ (integers), ℚ (rationals), ℝ (real numbers) and ℂ (complex numbers).

Most double-struck characters are in the Mathematical Alphanumeric Symbols block (U+1D538 onwards, digits from U+1D7D8). Seven capitals were encoded earlier in the Letterlike Symbols block because of their use in mathematics: ℂ (U+2102), ℍ (U+210D), ℕ (U+2115), ℙ (U+2119), ℚ (U+211A), ℝ (U+211D) and ℤ (U+2124). The generator uses those official characters.

Double-Struck Text character chart

Every character this generator converts, with the normal character on the left and the styled one on the right.

A𝔸B𝔹CℂD𝔻E𝔼F𝔽G𝔾HℍI𝕀J𝕁K𝕂L𝕃M𝕄NℕO𝕆PℙQℚRℝS𝕊T𝕋U𝕌V𝕍W𝕎X𝕏Y𝕐Zℤa𝕒b𝕓c𝕔d𝕕e𝕖f𝕗g𝕘h𝕙i𝕚j𝕛k𝕜l𝕝m𝕞n𝕟o𝕠p𝕡q𝕢r𝕣s𝕤t𝕥u𝕦v𝕧w𝕨x𝕩y𝕪z𝕫0𝟘1𝟙2𝟚3𝟛4𝟜5𝟝6𝟞7𝟟8𝟠9𝟡

Where styled text works

Place	Works?	Tip
Instagram and TikTok bio	Yes	Great for your name line or a short highlight
X (Twitter) posts and name	Yes	Styled characters may count as 2 toward the limit
Facebook posts and comments	Yes	Keep it to a few words for readability
Discord and WhatsApp	Yes	Both also have their own formatting shortcuts
Usernames and handles	Usually not	Most sites only allow plain letters, digits and _
Email subject lines	Sometimes	May look spammy and some clients show boxes

Frequently asked questions

What is double-struck text?

Double-struck, or blackboard bold, letters have one stroke drawn twice, the way bold letters are written on a blackboard. Unicode includes a full double-struck alphabet and digits in the Mathematical Alphanumeric Symbols block.

Why do C, H, N, P, Q, R and Z look slightly different?

Those seven capitals were added to Unicode earlier in the Letterlike Symbols block (ℂ, ℍ, ℕ, ℙ, ℚ, ℝ, ℤ) because mathematics uses them for number sets. The generator uses those official characters, and some fonts draw them in a different style.

What do ℕ, ℤ, ℚ, ℝ and ℂ mean in math?

They are the natural numbers, integers, rational numbers, real numbers and complex numbers.

Are digits supported?

Yes. Double-struck digits 𝟘 to 𝟡 exist (U+1D7D8 to U+1D7E1), so numbers are converted.

Where can I use double-struck text?

In social media bios, captions, gamer names and messages, and in plain-text math notes. Some sites with strict username rules will not accept it.

Is it accessible?

Screen readers usually announce these as mathematical letters, so use them for short decorative text.

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