Copy the exact output for U/u, check its Unicode code point, and see whether this style preserves case or maps both forms to one symbol.
𝐔Input: uppercase U
𝐮Input: lowercase u
Case behavior: Uppercase U maps to 𝐔 and lowercase u maps to 𝐮. The two cases remain distinct in this style.
Unicode details for Bold U
Input
Output
Mapping
Code point(s)
HTML entity
U
𝐔
Distinct uppercase mapping
U+1D414
𝐔
u
𝐮
Distinct lowercase mapping
U+1D42E
𝐮
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.
Bold examples for words beginning with U
The source words below begin with ordinary U. Copy the transformed result you want; effects such as Upside Down can also reorder a whole word.
𝐮𝐦𝐛𝐫𝐚Source: umbra
𝐮𝐧𝐢𝐨𝐧Source: union
𝐮𝐥𝐭𝐫𝐚Source: ultra
𝐮𝐩𝐥𝐚𝐧𝐝Source: upland
𝐮𝐭𝐨𝐩𝐢𝐚Source: utopia
𝐮𝐫𝐬𝐚Source: ursa
𝐮𝐧𝐢𝐜𝐨𝐫𝐧Source: unicorn
𝐮𝐧𝐢𝐭𝐲Source: unity
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 U in different fonts, or use the alphabet below to inspect another letter in Bold.
Do uppercase U and lowercase u stay different in Bold?
Uppercase U maps to 𝐔 and lowercase u maps to 𝐮. The two cases remain distinct in this style.
How do I copy and use 𝐔?
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.
What is the Bold letter U?
For uppercase U, Stylish Font Generator outputs 𝐔 (U+1D414). For lowercase u, it outputs 𝐮 (U+1D42E). Uppercase U maps to 𝐔 and lowercase u maps to 𝐮. The two cases remain distinct in this style.