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Unicode alphabet

Bold Letter J

Copy the exact output for J/j, check its Unicode code point, and see whether this style preserves case or maps both forms to one symbol.

𝐉Input: uppercase J
𝐣Input: lowercase j
Case behavior: Uppercase J maps to 𝐉 and lowercase j maps to 𝐣. The two cases remain distinct in this style.

Unicode details for Bold J

InputOutputMappingCode point(s)HTML entity
J𝐉Distinct uppercase mappingU+1D409𝐉
j𝐣Distinct lowercase mappingU+1D423𝐣

Unicode alphabet. This style substitutes supported Latin letters, and digits when the set includes them, with assigned Unicode mathematical or letterlike characters. Unsupported characters stay unchanged. It is a character substitution, not CSS formatting or an installed font.

About this Bold J mapping

Bold J uses distinct Mathematical Bold forms for uppercase and lowercase J. Both remain separate Unicode characters after copying.

Bold examples for words beginning with J

The source words below begin with ordinary J. Copy the transformed result you want; effects such as Upside Down can also reorder a whole word.

𝐣𝐚𝐝𝐞Source: jade
𝐣𝐚𝐠𝐮𝐚𝐫Source: jaguar
𝐣𝐞𝐭Source: jet
𝐣𝐞𝐰𝐞𝐥Source: jewel
𝐣𝐨𝐮𝐫𝐧𝐞𝐲Source: journey
𝐣𝐮𝐧𝐢𝐩𝐞𝐫Source: juniper
𝐣𝐨𝐥𝐭Source: jolt
𝐣𝐮𝐛𝐢𝐥𝐞𝐞Source: jubilee

Want to type a full word? Open the Bold generator to transform your own text. To compare this same letter across the whole indexed set, see J in different fonts, or use the alphabet below to inspect another letter in Bold.

Bold A to Z

𝐚𝐛𝐜𝐝𝐞𝐟𝐠𝐡𝐢𝐣𝐤𝐥𝐦𝐧𝐨𝐩𝐪𝐫𝐬𝐭𝐮𝐯𝐰𝐱𝐲𝐳

Compare J in related styles

These alternatives were selected to show a useful contrast in weight, enclosure, spacing or case behavior.

𝗝Sans Bold JCompare Unicode mapping and case behavior.𝑱Bold Italic JCompare Unicode mapping and case behavior.𝐽Italic JCompare Unicode mapping and case behavior.ᴊSmall Caps JCompare Unicode mapping and case behavior.𝙹Monospace JCompare Unicode mapping and case behavior.

FAQ

What is the Bold letter J?
For uppercase J, Stylish Font Generator outputs 𝐉 (U+1D409). For lowercase j, it outputs 𝐣 (U+1D423). Uppercase J maps to 𝐉 and lowercase j maps to 𝐣. The two cases remain distinct in this style.
Do uppercase J and lowercase j stay different in Bold?
Uppercase J maps to 𝐉 and lowercase j maps to 𝐣. The two cases remain distinct in this style.
How do I copy and use 𝐉?
Use the Copy button above, paste the result into the field you want, and verify it before saving. Unicode support, fonts, moderation filters and character limits can differ between apps and devices.
Why can the same Unicode letter look different on another device?
The code point stays the same, but the receiving operating system or app chooses the font that draws it. Shape, weight, spacing or fallback rendering can therefore vary even when the copied character itself has not changed.