What 𝛷 means
It is Greek capital phi set in mathematical italic. In an equation, that typographic style marks it as a variable or quantity; the formula tells you what it names.
Phi is a Greek alphabet letter; the Greek alphabet adapted an earlier alphabetic script used by Semitic-language communities. Mathematical notation uses letter styles to distinguish variables, and Unicode encodes these styles separately so plain-text formulas can keep distinctions that may affect meaning.
Part of collections
Don't confuse it with
1Questions people ask
1Can text normalization change 𝛷 to Φ?
Yes. Compatibility normalization (NFKC), a text-processing cleanup that replaces styled mathematical letters with their base letters, can turn 𝛷 into plain Φ. Keep the styled character when the formula depends on that distinction.
How to type or find 𝛷
- Search it as
- math phi · italic phi · capital phi · phi variable · unicode phi
- Shows up in
- Anything that takes text · its shape is whatever your font draws
𝛷\1D6F7Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.





