Inspect hexadecimal values for ASCII text and copy the output.
The ASCII to Hex Converter shows ASCII text as hexadecimal values. Use it to inspect letters, spaces, and punctuation when preparing test data or checking an encoding issue.
ASCII assigns characters numeric values: capital A is 65, lowercase a is 97, and a space is 32. Hexadecimal uses digits 0-9 and letters A-F. The character A, decimal 65, becomes 41 in hex.
A byte can hold a value from 0 to 255. With two hex digits, that range runs from 00 to FF. This makes byte values easier to compare in memory dumps, network packets, and file headers.
Hi!48 69 21Here H is 48, i is 69, and ! is 21. The example separates values with spaces so you can read each byte.
Other tools may omit spaces, add a 0x prefix, or use lowercase letters. For example, 48, 0x48, and 48 in lowercase represent the same value. Spaces and newlines also affect the data: look for 20 and 0A when checking an unexpected result. A 0x prefix changes notation, not the value.
ASCII characters fit in single bytes. Do not assume that non-ASCII characters use the same mapping or encoding as another application. Check the output against the encoding your destination expects.
Reverse the direction with the Hex to ASCII Converter, or use the Data URI Generator for Base64 data URLs.
How to Use ASCII to Hex Converter - Convert Text to Hexadecimal
Type or paste your text into ASCII Text. Include the spaces and punctuation you need to inspect.
Read Hexadecimal Output and compare it with the source. Check the encoding separately for non-ASCII text.
Use Copy beside the output to reuse the hexadecimal values in your work.
Inspect hexadecimal values for ASCII text and copy the output.
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Sep 11, 2026Type:
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