Text to ASCII Converter
Free online Text to ASCII converter that encodes any text into ASCII codes. Choose decimal, hex, binary, or octal output and pick a separator between codes. Everything runs locally in your browser — no signup, no uploads, nothing leaves your device.
Type or Paste Your Text
Plain text in, ASCII codes outCtrl+Enter (or Cmd+Enter) inside the textarea to encode instantly. Only characters in the ASCII range (0–255) are encoded — emoji and non-Latin scripts are skipped or replaced.
Encoded ASCII Codes
Ready when you areYour ASCII codes will appear here
Type some text and click Encode to ASCII.
What does this Text to ASCII Converter do?
This free online Text to ASCII converter encodes any text into a sequence of ASCII codes. Type or paste your text on the left, pick your output format, and the codes appear instantly on the right. It's the reverse operation of an ASCII to Text decoder.
The converter supports the four number bases people actually use for ASCII data. Decimal is the most common (72 for "H"). Hexadecimal is common in developer contexts and network protocols (48 for "H"). Binary shows up in low-level code and educational material (01001000 for "H"). Octal is rarely used today but still appears in Unix file permissions and legacy systems (110 for "H").
Everything runs locally in your browser. The text you type never leaves your device, there is no signup, and there are no usage limits. Encode as much text as you want, as many times as you want, for personal or commercial projects.
How to convert text to ASCII codes
- Type or paste your text into the input box on the left.
- Choose the format — decimal, hex, binary, or octal. Pick a separator between codes too — space, comma, newline, tab, pipe, or none.
- Watch the output appear instantly on the right. With Live conversion on (the default), the codes update as you type.
- Check the stats to confirm how many codes were emitted, how many characters were encoded, and how many were skipped (if any).
- Copy or download the encoded codes using the buttons above the output panel.
Why use this Text to ASCII converter?
Instant encoding
Encoding happens in your browser the moment you type. No server round-trip, no waiting, no upload limits.
Four formats, six separators
Choose decimal, hex, binary, or octal output. Pick from space, comma, newline, tab, pipe, or no separator at all.
Flexible binary
Pad binary codes to a full 8 digits (like 01001000) or leave them unpadded (like 1001000). Toggle in one click.
Hex prefix option
Optionally prefix each hex code with 0x for readability or to match a specific format.
100% private
Everything runs locally. The text you type never leaves your device — no server, no logs, no tracking.
Works offline
Once the page loads, you can encode text to ASCII without an internet connection. Bookmark it for offline work.
Common ASCII values reference
Here is a quick reference of the most commonly used ASCII codes so you can eyeball whether the encode makes sense. For example, "Hello" becomes 72 101 108 108 111 in decimal.
| Character | Decimal | Hex | Octal | Binary |
|---|---|---|---|---|
| Space | 32 | 20 | 40 | 00100000 |
| ! | 33 | 21 | 41 | 00100001 |
| 0 | 48 | 30 | 60 | 00110000 |
| 9 | 57 | 39 | 71 | 00111001 |
| A | 65 | 41 | 101 | 01000001 |
| Z | 90 | 5A | 132 | 01011010 |
| a | 97 | 61 | 141 | 01100001 |
| z | 122 | 7A | 172 | 01111010 |
| Newline | 10 | 0A | 12 | 00001010 |
| Tab | 9 | 09 | 11 | 00001001 |
The full ASCII table spans 0–127 for standard ASCII and 128–255 for extended ASCII. Printable characters start at 32 (space) and go up to 126 (~). Codes below 32 are control characters — newline, tab, carriage return, and others — which the encoder includes as their numeric values.
Who uses a Text to ASCII converter?
Anyone working with raw byte data, encoding strings, or educational material benefits from encoding text to ASCII. Here are the most common use cases:
Developers
- Encode strings before sending them over a protocol that expects numeric codes
- Produce test data for a low-level system or a byte-oriented parser
- Verify what a decoder produced by comparing against a known encoder
- Generate hex dumps or binary representations of text
Students and learners
- Understand how computers represent text as numbers
- Practice with ASCII, hex, binary, and octal conversions for exams
- See how character encoding works from the ground up
Security analysts
- Encode strings for obfuscation testing
- Prepare payloads for injection tests that expect numeric encoding
- Generate ASCII-based encodings for network protocol debugging
Anyone sharing encoded text
- Encode a message into numeric codes that can be transmitted over any text channel
- Create a puzzle or easter egg for a friend using ASCII codes
- Save a "text to ASCII" output to decode later
Text to ASCII vs. ASCII to Text — what is the difference?
These two operations are opposites, and each has its own job.
| Direction | What it does | Best for |
|---|---|---|
| Text to ASCII (this page) | Takes readable characters and produces numeric codes | Encoding messages, teaching character encoding, preparing data for transmission |
| ASCII to Text | Takes numeric codes (decimal, hex, binary) and produces readable characters | Decoding messages, debugging byte output, recovering encoded text |
For a two-way workflow, use this Text to ASCII encoder to produce the numeric codes, then our ASCII to Text decoder to convert them back. A round-trip through the two tools preserves the original text exactly, as long as you stick to ASCII characters and pick the same format on both sides.
Tips for working with ASCII encoding
- Pick the format that matches your destination. Decimal is human-readable. Hex is compact and common in dev tools. Binary is verbose but unambiguous. Octal is rare and mostly legacy.
- Use a consistent separator. Spaces are the most readable; commas and newlines are common in data files. "None" is only useful when the codes have a fixed width (like 8-digit binary or 2-digit hex).
- Pad binary to 8 digits. Without padding, "A" becomes
1000001which is easy to confuse with a longer sequence. With padding, it's clearly01000001. - Remember that printable ASCII starts at 32. Space is 32, and codes below that are control characters (newline at 10, tab at 9, etc.) — the encoder includes them as their numeric values.
- Extended ASCII (128–255) depends on the code page. This tool maps them using Windows-1252, which is what most modern systems use by default. If you need a different mapping, use a dedicated character encoding tool.
- Unicode above 255 is skipped. Emojis and non-Latin scripts (CJK, Arabic, Cyrillic, etc.) are out of the ASCII range. The encoder counts them as "skipped" so you can see what was dropped.