ASCII Table

ASCII Control Codes (0–31)

ASCII ASCII Control Codes (0–31) — decimal, hex, and Unicode mappings for each byte value.

31 characters

ASCII Control Codes (0–31) List

Search, copy, and open each symbol for full encoding details.

Showing all ASCII symbols
Symbol Name Dec Hex Unicode Category Copy
Start of Heading — ASCII 1 (U+0001) 1 0x01 U+0001 ASCII Control Codes (0–31)
Start of Text — ASCII 2 (U+0002) 2 0x02 U+0002 ASCII Control Codes (0–31)
End of Text — ASCII 3 (U+0003) 3 0x03 U+0003 ASCII Control Codes (0–31)
End of Transmission — ASCII 4 (U+0004) 4 0x04 U+0004 ASCII Control Codes (0–31)
Enquiry — ASCII 5 (U+0005) 5 0x05 U+0005 ASCII Control Codes (0–31)
Acknowledge — ASCII 6 (U+0006) 6 0x06 U+0006 ASCII Control Codes (0–31)
Bell — ASCII 7 (U+0007) 7 0x07 U+0007 ASCII Control Codes (0–31)
Backspace — ASCII 8 (U+0008) 8 0x08 U+0008 ASCII Control Codes (0–31)
Horizontal Tab — ASCII 9 (U+0009) 9 0x09 U+0009 ASCII Control Codes (0–31)
Line Feed — ASCII 10 (U+000A) 10 0x0A U+000A ASCII Control Codes (0–31)
Vertical Tab — ASCII 11 (U+000B) 11 0x0B U+000B ASCII Control Codes (0–31)
Form Feed — ASCII 12 (U+000C) 12 0x0C U+000C ASCII Control Codes (0–31)
Carriage Return — ASCII 13 (U+000D) 13 0x0D U+000D ASCII Control Codes (0–31)
Shift Out — ASCII 14 (U+000E) 14 0x0E U+000E ASCII Control Codes (0–31)
Shift In — ASCII 15 (U+000F) 15 0x0F U+000F ASCII Control Codes (0–31)
Data Link Escape — ASCII 16 (U+0010) 16 0x10 U+0010 ASCII Control Codes (0–31)
Device Control One — ASCII 17 (U+0011) 17 0x11 U+0011 ASCII Control Codes (0–31)
Device Control Two — ASCII 18 (U+0012) 18 0x12 U+0012 ASCII Control Codes (0–31)
Device Control Three — ASCII 19 (U+0013) 19 0x13 U+0013 ASCII Control Codes (0–31)
Device Control Four — ASCII 20 (U+0014) 20 0x14 U+0014 ASCII Control Codes (0–31)
Negative Acknowledge — ASCII 21 (U+0015) 21 0x15 U+0015 ASCII Control Codes (0–31)
Synchronous Idle — ASCII 22 (U+0016) 22 0x16 U+0016 ASCII Control Codes (0–31)
End of Transmission Block — ASCII 23 (U+0017) 23 0x17 U+0017 ASCII Control Codes (0–31)
Cancel — ASCII 24 (U+0018) 24 0x18 U+0018 ASCII Control Codes (0–31)
End of Medium — ASCII 25 (U+0019) 25 0x19 U+0019 ASCII Control Codes (0–31)
Substitute — ASCII 26 (U+001A) 26 0x1A U+001A ASCII Control Codes (0–31)
Escape — ASCII 27 (U+001B) 27 0x1B U+001B ASCII Control Codes (0–31)
File Separator — ASCII 28 (U+001C) 28 0x1C U+001C ASCII Control Codes (0–31)
Group Separator — ASCII 29 (U+001D) 29 0x1D U+001D ASCII Control Codes (0–31)
Record Separator — ASCII 30 (U+001E) 30 0x1E U+001E ASCII Control Codes (0–31)
Unit Separator — ASCII 31 (U+001F) 31 0x1F U+001F ASCII Control Codes (0–31)