EBCDIC to ASCII Converter [2025]

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Convert EBCDIC (Extended Binary Coded Decimal Interchange Code) data to ASCII text. Supports multiple EBCDIC code pages and offers format options for handling mainframe data.

✓ Multiple Code Pages✓ Flexible Input Format✓ Real-time Conversion

Select the source EBCDIC encoding.

If unchecked, unknown bytes are replaced with � (U+FFFD).

Separate hex bytes with spaces. E.g., C1 C2 C3 or F1 F2 F3.

Output shows resulting text.

Note: EBCDIC mappings can vary. CP 037 map based on IBM reference table. Other maps use common overrides. Always verify critical data. Auto-detection is complex and not implemented.

Key Features

  • Convert EBCDIC-encoded data to readable ASCII text
  • Support for multiple EBCDIC code pages including CP037 (USA/Canada), CP500 (Latin-1), and more
  • Accept input in hexadecimal, decimal, or binary format
  • Option to view the ASCII output as text or in byte representation
  • Control handling of unconvertible or control characters
  • Preserve original values or replace with placeholders for unknown characters
  • Strip control characters for cleaner output
  • One-click copy and download functionality
  • Built-in examples for quick testing

Understanding EBCDIC

EBCDIC (Extended Binary Coded Decimal Interchange Code) is an 8-bit character encoding used primarily by IBM mainframe and midrange computer operating systems. It was developed in the 1960s and differs significantly from ASCII, making conversion necessary when moving data between mainframe and modern systems.

Key differences between EBCDIC and ASCII include:

  • Character positions - letters, numbers, and symbols occupy different code positions
  • Ordering - lowercase and uppercase letters are not in contiguous blocks
  • Control characters - different sets and positions for control characters
  • Regional variations - multiple EBCDIC code pages for different languages and regions

This converter helps bridge the gap between these two encoding standards, allowing for seamless data exchange between mainframe systems and modern platforms.

Common Use Cases

Data Migration

  • • Mainframe to cloud migration
  • • Legacy system integration
  • • Historical data preservation
  • • Batch file processing

Development

  • • Debugging mainframe data
  • • API integration testing
  • • File format conversion
  • • Cross-platform compatibility

Data Analysis

  • • Mainframe record extraction
  • • Report generation
  • • Log file analysis
  • • Data verification

Code Page Information

Code PageNameDescriptionCommon Usage
037CP037USA/Canada EBCDICMost common, standard US encoding
500CP500International EBCDICMultilingual support
1047CP1047Latin-1 with Euro symbolModern European systems
273CP273Germany EBCDICGerman mainframe systems
285CP285United Kingdom EBCDICUK-based systems and applications

Frequently Asked Questions

What is EBCDIC and why would I need to convert it?

EBCDIC is a character encoding standard used mainly on IBM mainframes and midrange computers. If you're working with data from these systems, you'll need to convert it to ASCII for use in modern applications, web services, or data analysis tools that expect ASCII or Unicode encoding.

How do I know which code page to use?

The code page depends on the country/region and system where the EBCDIC data originated. Code page 037 (USA/Canada) is the most common default. If you're unsure, try converting with different code pages and check which produces the most readable output for your data.

How do I input EBCDIC data?

You can enter EBCDIC data in three formats: hexadecimal (e.g., C8 C5 D3 D3 D6), decimal (e.g., 200 197 211 211 214), or binary. Most commonly, EBCDIC data is shared as hexadecimal byte values, especially when extracted from mainframe dumps or data transfer utilities.

What does "Skip Unconvertible Bytes" do?

Some EBCDIC byte values may not have direct ASCII equivalents. When this option is enabled, these bytes are skipped in the output. When disabled, they're either preserved as-is (if "Preserve Unknown Characters" is enabled) or replaced with a question mark (?) to indicate an unconverted character.

Is my data secure?

Yes, all conversion processing happens entirely in your browser. Your EBCDIC data is not sent to any server, ensuring complete privacy and security of your sensitive information.

EBCDIC to ASCII Conversion Chart

This chart shows common EBCDIC characters and their ASCII equivalents (Code Page 037):

Uppercase Letters

CharacterEBCDIC (Hex)ASCII (Hex)
AC141
BC242
CC343
ZE95A

Numbers

CharacterEBCDIC (Hex)ASCII (Hex)
0F030
1F131
2F232
9F939

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