Double-Struck Text Generator

This double struck text generator writes your words in hollow 𝕠𝕦π•₯π•π•šπ•Ÿπ•– letters, also called blackboard bold. It includes digits (πŸ™πŸšπŸ›), so it works for dates, scores and numbers too.

Updated

  • Double-struck (outline)Works everywhere
    ℍ𝕖𝕝𝕝𝕠 π•Žπ• π•£π•π••

More text styles

  • BoldWorks everywhere
    π‡πžπ₯π₯𝐨 𝐖𝐨𝐫π₯𝐝
  • Sans-serif boldWorks everywhere
    𝗛𝗲𝗹𝗹𝗼 π—ͺ𝗼𝗿𝗹𝗱
  • Monospace (typewriter)Works everywhere
    π™·πšŽπš•πš•πš˜ πš†πš˜πš›πš•πš

Blackboard bold, from chalk to Unicode

Mathematicians writing on a blackboard could not easily make bold letters, so they doubled one stroke instead. The habit stuck: ℝ means the real numbers, β„• the natural numbers, β„€ the integers, β„š the rationals and β„‚ the complex numbers. Unicode encodes the full alphabet as Mathematical Double-Struck letters (U+1D538 onward) and digits 𝟘 to 𝟑 (U+1D7D8 onward).

Seven capitals were encoded earlier in Letterlike Symbols, precisely because of those number sets: β„‚ ℍ β„• β„™ β„š ℝ β„€. The generator uses them where the main range has gaps, so your text is always complete. See the real numbers symbol and natural numbers symbol pages for their meaning in maths.

How it looks

Double-struck letters look like outlined or embossed capitals and stay legible at small sizes, unlike cursive or Gothic styles. That makes them a good choice for gaming tags, sports scores (πŸ›β€“πŸ™), headings in a bio and product launch posts. Lowercase letters are less consistent across fonts than capitals; on some Android fonts they look simply bold.

Limits

There are no double-struck accented letters or punctuation, and the characters are maths symbols to software, so search and screen readers will not treat them as words. Avoid them in usernames, which usually only accept plain letters. If you need the letters for actual mathematics, use LaTeX’s \mathbb{R} or the math symbols collection instead of the generator.

More text styles

Frequently asked questions

What is double-struck text?

Letters drawn with a doubled stroke, such as 𝔸𝔹ℂ, also called blackboard bold. In maths, ℝ and β„• are double-struck.

Does double-struck text include numbers?

Yes. Unicode has double-struck digits πŸ˜πŸ™πŸšπŸ›πŸœπŸπŸžπŸŸπŸ πŸ‘.

What does ℝ mean?

ℝ is the set of real numbers. Double-struck capitals are the standard notation for number sets.

How do I type blackboard bold in LaTeX?

Load amssymb and write \mathbb{R} for ℝ. For text on social media, use the generator above.