ASCII to Hex Converter
Convert ASCII letters to hexadecimal, decimal, or eight-bit binary values. Reverse any supported code list back into ASCII text.
Written and checked by TheToolNet Editorial Team · Last reviewed: October 11, 2026 · Editorial method
Convert ASCII text and codes
ASCII to hex example
| Character | Decimal | Hex | Binary |
|---|---|---|---|
| A | 65 | 41 | 01000001 |
| a | 97 | 61 | 01100001 |
| 0 | 48 | 30 | 00110000 |
| Space | 32 | 20 | 00100000 |
ASCII versus Unicode
Standard ASCII is a seven-bit character set with values 0–127. This tool deliberately rejects larger values instead of silently calling UTF-16 or UTF-8 bytes “ASCII.” The original code definitions are recorded in RFC 20.
Frequently asked questions
Can hex values include 0x?
Yes. Both 41 and 0x41 are accepted in hex-to-text mode.
How should multiple codes be separated?
Use spaces, commas, semicolons, or line breaks.