Free Decimal to Text Converter – Convert ASCII Codes to Text Online
Convert decimal ASCII codes to readable text instantly. Decode number sequences to reveal hidden messages. Multiple separator formats supported. 100% free.
What Is Decimal to Text Conversion?
Decimal to text conversion transforms numeric ASCII or Unicode code points into their corresponding characters. Each number represents a specific character in the character encoding standard.
How Text Is Encoded
Every character has a numeric value:
- A = 65
- B = 66
- a = 97
- 1 = 49
- Space = 32
This tool reverses the encoding to reveal the original text.
How to Use This Tool
Step 1: Enter Codes
Input decimal numbers separated by spaces, commas, or newlines.
Step 2: Choose Separator
Select how your numbers are separated.
Step 3: View Text
See the decoded text instantly.
ASCII Code Reference
Uppercase Letters
| Letter | Code | Letter | Code |
|---|---|---|---|
| A | 65 | N | 78 |
| B | 66 | O | 79 |
| C | 67 | P | 80 |
| D | 68 | Q | 81 |
| E | 69 | R | 82 |
| F | 70 | S | 83 |
| G | 71 | T | 84 |
| H | 72 | U | 85 |
| I | 73 | V | 86 |
| J | 74 | W | 87 |
| K | 75 | X | 88 |
| L | 76 | Y | 89 |
| M | 77 | Z | 90 |
Lowercase Letters
| Letter | Code | Letter | Code |
|---|---|---|---|
| a | 97 | n | 110 |
| b | 98 | o | 111 |
| c | 99 | p | 112 |
| d | 100 | q | 113 |
| e | 101 | r | 114 |
| f | 102 | s | 115 |
| g | 103 | t | 116 |
| h | 104 | u | 117 |
| i | 105 | v | 118 |
| j | 106 | w | 119 |
| k | 107 | x | 120 |
| l | 108 | y | 121 |
| m | 109 | z | 122 |
Numbers
| Digit | Code |
|---|---|
| 0 | 48 |
| 1 | 49 |
| 2 | 50 |
| 3 | 51 |
| 4 | 52 |
| 5 | 53 |
| 6 | 54 |
| 7 | 55 |
| 8 | 56 |
| 9 | 57 |
Common Symbols
| Symbol | Code | Symbol | Code |
|---|---|---|---|
| Space | 32 | ( | 40 |
| ! | 33 | ) | 41 |
| " | 34 | * | 42 |
| # | 35 | + | 43 |
| $ | 36 | , | 44 |
| % | 37 | - | 45 |
| & | 38 | . | 46 |
| ' | 39 | / | 47 |
Conversion Examples
Example 1: Decode "Hello"
Input: 72 101 108 108 111
| Code | Character |
|---|---|
| 72 | H |
| 101 | e |
| 108 | l |
| 108 | l |
| 111 | o |
Result: "Hello"
Example 2: Decode "Hi!"
Input: 72, 105, 33
Result: "Hi!"
Understanding Character Encoding
ASCII (0-127)
Standard ASCII uses 7 bits and includes:
- 0-31: Control characters
- 32-126: Printable characters
- 127: Delete
Extended ASCII (0-255)
Extended ASCII uses 8 bits and adds:
- 128-255: Special characters (varies by encoding)
Unicode (0-1,114,111)
Unicode includes all world scripts:
- Basic Latin (0-127)
- Latin Extended
- Chinese, Japanese, Korean
- Emojis (starting at 128,513)
Use Cases
Decode Secret Messages
Decimal-encoded text is sometimes used in puzzles, games, and mystery content.
Programming & Debugging
Developers often work with character codes when processing text.
Data Analysis
Understanding how text is encoded helps in data processing.
Education
Learning about ASCII is fundamental to computer science.
Programming Examples
JavaScript
const codes = [72, 101, 108, 108, 111];
const text = String.fromCharCode(...codes);
// Result: 'Hello'
Python
codes = [72, 101, 108, 108, 111]
text = ''.join(chr(c) for c in codes)
# Result: 'Hello'
Frequently Asked Questions
What numbers are valid?
Standard ASCII uses 0-127. Extended characters go to 255. Unicode supports up to 1,114,111.
What are control characters?
Codes 0-31 are non-printable control characters (like newline, tab). They appear as dots in the preview.
Can I input comma-separated values?
Yes! Choose "Comma" as the separator format.
What if a number is invalid?
Invalid numbers show as "?" in the output.
Does this support emojis?
Yes! Emoji code points (like 128512 for 😀) are supported.
Tips for Decoding
- Know your separator: Check if codes are space, comma, or newline separated
- Check the range: Valid ASCII is 0-127, extended is 0-255
- Watch for errors: Invalid codes indicate data problems
- Try different formats: If one doesn't work, try another separator
Enter decimal codes above to decode them to text instantly.