What is the difference between Mathematical Double-struck Small F and Latin Small Letter F?

Mathematical Double-struck Small F is U+1D557 in the Mathematical Alphanumeric Symbols block. Latin Small Letter F is U+0066 in the Basic Latin block. They are distinct Unicode codepoints and may appear visually similar depending on the font.

What is the HTML entity for Mathematical Double-struck Small F?

The HTML entity for Mathematical Double-struck Small F (U+1D557) is 𝕗.

What is the HTML entity for Latin Small Letter F?

The HTML entity for Latin Small Letter F (U+0066) is f.

Are Mathematical Double-struck Small F and Latin Small Letter F the same Unicode character?

No. Mathematical Double-struck Small F is U+1D557 (decimal 120151) and Latin Small Letter F is U+0066 (decimal 102). They are separate codepoints.

What are the UTF-8 encodings of Mathematical Double-struck Small F and Latin Small Letter F?

Mathematical Double-struck Small F (U+1D557) encodes as F0 9D 95 97 in UTF-8. Latin Small Letter F (U+0066) encodes as 66 in UTF-8.

Mathematical Double-struck Small F vs Latin Small Letter F

Compare two Unicode characters side by side — encodings, HTML entities, escape sequences, and Unicode properties. Useful for distinguishing visually similar characters like hyphens and dashes, quotation marks, or homoglyphs.

𝕗

Mathematical Double-struck Small F

U+1D557

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Latin Small Letter F

U+0066

Full details →

Property Comparison

Property	Mathematical Double-struck Small F	Latin Small Letter F
Codepoint	`U+1D557`	`U+0066`
Decimal	`120151`	`102`
HTML Entity	`𝕗`	`f`
HTML Decimal	`𝕗`	`f`
HTML Hex	`𝕗`	`f`
UTF-8	`F0 9D 95 97`	`66`
UTF-16	`D8 35 DD 57`	`00 66`
UTF-32	`0001D557`	`00000066`
CSS Escape	`\1D557`	`\66`
JS Escape	`\uD835\uDD57`	`\u0066`
Python Escape	`\U0001D557`	`\u0066`
URL Encoded	`%F0%9D%95%97`	`f`
Category	`Lowercase Letter (Ll)`	`Lowercase Letter (Ll)`
Block	`Mathematical Alphanumeric Symbols`	`Basic Latin`
Script	`Common`	`Latin`
Bidi Class	`L`	`L`
Unicode Version	`3.1`	`1.1`

Rows highlighted in amber differ between the two characters.

Common Comparisons

Frequently confused character pairs.

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