Mathematical Bold Script Capital K 𝓚

Visual Description: The glyph is a bold script capital K, with rounded strokes and a gentle slant. It has thick lines and a fluid, handwritten feel. It sits above the baseline and keeps even thickness. It reads clearly in formulas and labels. It suits math editors and calculators. It stands out.

Meaning & Usage: This character signals emphasis or a special style. It marks variables in formulas and denotes a named quantity in equations. In UI design, it helps distinguish variables from constants. It can appear in calculators or math apps to show a unique variable. Use where you need distinction.

Historical Background: The style is part of a broad family of mathematical alphanumeric symbols that extend standard letters with decorative forms. Bold script variants arose to add personality and emphasis in handwriting and printed math. These forms help separate named ideas from ordinary text. They appear in notes, books, and teaching materials.

Practical Use: In practice, you will see this K in formulas when a variable needs emphasis. Use it in quick UI controls to switch between standard and decorative letters. It helps comparisons by highlighting terms like K & k in a ratio or system. Many calculators and math apps offer style toggles to preview bold script letters.

See our category page for related symbols.

Look‑alikes: K (U+4B).

Need styled alternatives? Try the Fancy Text tool.