Mathematical Sans-Serif Capital K 𝖪

Visual Description: This character is a tall, geometric uppercase K rendered in a mathematical sans-serif style. The lines are clean and uniform, with straight strokes and precise angles. The weight is medium, giving it a modern, neutral appearance suitable for dense equations and compact UI layouts. It contrasts with serif letters.

Meaning & Usage: It represents a variable or constant named K in math and science, often used to denote a coefficient, a matrix dimension, or a constant in formulas. In plotting and calculations, it stands in for a quantity to be solved or compared. It pairs with other symbols in compact notation.

Historical Background: This style grew from needs for clarity on screens and in dense math text. Designers created sans-serif forms with uniform stroke widths to reduce ambiguity at small sizes. In many contexts, mathematical alphabets were adopted by software and calculators to standardize symbols for quick input and comparison.

Practical Use: In calculators and math apps, this K is used as a variable or parameter in formulas. It appears in user interfaces as a ready-to-edit field or a selectable option in quick menus. Operators and comparison controls let users adjust K with sliders or increment buttons, enabling fast exploration of results.

See our category page for related symbols.

Look‑alikes: K (U+4B).

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