Base-16 literal
0xff
- Base 16
- 8 bits
- = 255
0xff is a hexadecimal literal equal to 255 in decimal. It needs 8 bits (1 bytes) of storage, and is 0xFF in hexadecimal and 11111111 in binary.
In every base
Decimal255
Binary11111111
Octal377
HexadecimalFF
Base 327V
Base 3673
Prefixed literals0xff · 0o377 · 0b11111111
Bit width & storage
Significant bits8
Bytes needed1
Fits in 8 bitsYes
Fits in 16 bitsYes
Fits in 32 bitsYes
Fits in 64 bitsYes
Padded to 8 bits11111111
Padded to 32 bits00000000000000000000000011111111
Read another way
Bitwise operations
NOT (32-bit)4,294,967,040
Shift left by 1510
Shift right by 1127
Population count8the number of set bits
Lowest set bit1
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The same value
Also reads as
U+00FF (unicode character)
- U+00FF
- ÿ
- Lowercase letter
U+00FF is code point 255 (ÿ), a lowercase letter in the Latin-1 Supplement block of the Basic Multilingual Plane. It takes 2 bytes in UTF-8 and 1 unit in UTF-16.
Identity
Code pointU+00FF
Decimal255
Characterÿ
General categoryLowercase letter
BlockLatin-1 Supplement
PlaneBasic Multilingual Planeplane 0
Official nameNot includedthe Unicode Character Database is not bundled; a stale copy would be worse than none
Encodings
UTF-8C3 BF2 bytes
UTF-1600FFa single unit
UTF-32000000FF
Binary11111111
Bytes in UTF-8 vs UTF-162 vs 2UTF-16 is not always smaller, even for non-Latin text
Writing it in code
HTML numeric entityÿ
HTML hex entityÿ
CSS escape\00FF
JavaScript\u00FF
Python\u00FF
Percent-encoded (URL)%C3%BF
Things that catch people out
JavaScript string length1
Needs a surrogate pairNo
Safe in a URL unescapedNo
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Every link below is a page Nerdulator can generate from what it already knows about this value.