Free EBCDIC Tool

EBCDIC to Decimal Converter
Get Byte Values Instantly

Convert EBCDIC encoded bytes to their decimal values online — instantly and for free. Supports 12+ IBM code pages, side-by-side ASCII cross-reference, bulk input, and file upload. No login needed.

Convert EBCDIC to Decimal
12+
EBCDIC Codesets
Table
Full Byte View
Bulk
Multi-Line Input
Free
No Login Needed

Bulk EBCDIC to Decimal Converter

Paste EBCDIC hex bytes below (one sequence per line) or upload a .txt file. Select your EBCDIC codeset and output format, then click Convert.

Click to upload or drag & drop a .txt file containing EBCDIC hex data

Supports .txt files up to 2MB

Conversion Result
0
Lines
0
Bytes
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Min Value
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Max Value
0
Errors
Why Use Our Tool

Advanced EBCDIC to Decimal Converter Features

The most comprehensive free EBCDIC decimal translator — accurate, multi-codeset, with full table output for byte-level inspection.

Full Byte Table Output

View EBCDIC hex value, EBCDIC decimal, corresponding ASCII decimal, and ASCII character side-by-side for every byte — the most complete EBCDIC decimal reference available online.

12+ EBCDIC Codesets

Supports CP037, CP500, CP1047, CP1140, CP285, CP273, CP277, CP278, CP280, CP284, CP297, and CP871 — showing correct decimal values for each national EBCDIC variant.

Multiple Output Formats

Choose from decimal-only, decimal with ASCII cross-reference, full table view, or per-line breakdown — tailored for different debugging and documentation needs.

File Upload Support

Upload a .txt file containing EBCDIC hex data for large-scale batch decimal conversion. Drag and drop or click to browse — up to 2MB supported.

Real-time Validation

Input is validated as you type. Invalid hex nibbles and malformed byte sequences are flagged instantly, preventing silent conversion errors.

Min / Max Statistics

See the minimum and maximum EBCDIC decimal byte values in your input, plus total byte count and error count — useful for range validation and data integrity checks.

Simple Process

How to Convert EBCDIC to Decimal

Convert EBCDIC hex bytes to their decimal values in four simple steps — no software installation required.

1

Enter or Upload EBCDIC

Paste EBCDIC hex bytes into the input box (one sequence per line) or upload a .txt file. Each line is converted independently.

2

Select Codeset & Format

Choose the EBCDIC code page for your source system (e.g. CP037 for US mainframes) and your preferred output format — table, decimal-only, or with ASCII cross-reference.

3

Click Convert

Hit "Convert EBCDIC to Decimal" and the tool instantly calculates the decimal value of each EBCDIC byte and maps it to its ASCII equivalent via the selected code page.

4

Copy or Download

Copy the decimal output to clipboard or download as a .txt file. The full table view is ideal for reference documentation and byte-level debugging.

What Is EBCDIC to Decimal Conversion? How It Works & Why It Matters

EBCDIC to decimal conversion is the process of translating EBCDIC (Extended Binary Coded Decimal Interchange Code) character bytes — typically expressed as two-digit hexadecimal values — into their base-10 (decimal) integer equivalents. Because EBCDIC is an 8-bit encoding, every EBCDIC byte holds a value between 0 and 255 in decimal. For example, the EBCDIC byte 0xC1 has a decimal value of 193, while its ASCII equivalent character 'A' is decimal 65. This fundamental difference is the source of data corruption when EBCDIC mainframe files are transferred to ASCII systems without proper conversion.

How does EBCDIC decimal conversion work? Each EBCDIC byte in your input is interpreted as a two-digit hexadecimal number. The tool converts this hex value to its base-10 decimal equivalent (e.g. 0xC8 = 200, 0x85 = 133, 0x96 = 150). Optionally, the tool also looks up the corresponding ASCII character and ASCII decimal value using the selected EBCDIC code page translation table — showing you both what the byte means numerically in EBCDIC and what ASCII character it maps to. This side-by-side view is invaluable for verifying code page translations and debugging mainframe data extracts.

Who uses EBCDIC to decimal converters? This tool serves mainframe developers checking COBOL numeric packed-decimal fields, data engineers validating EBCDIC-to-ASCII migration accuracy, systems programmers writing IBM Assembler routines that reference character codes numerically, QA engineers cross-referencing EBCDIC code page tables, and database administrators analyzing raw VSAM or QSAM dataset dumps from IBM z/OS or IBM i (AS/400) environments. EBCDIC decimal values also appear in JCL SYSOUT files, memory dumps, and IBM debug traces — making this converter a practical everyday tool for the mainframe community.

FAQ

Frequently Asked Questions

Everything you need to know about converting EBCDIC to decimal.

EBCDIC to decimal conversion translates each EBCDIC character byte (expressed as a hex value like 0xC1) into its equivalent base-10 (decimal) integer (193 in this case). It can also show the corresponding ASCII character and ASCII decimal value. This is used for debugging mainframe data, cross-referencing EBCDIC code page tables, and analyzing raw byte values in IBM z/OS or IBM i data files.
In EBCDIC CP037, the character 'A' is byte 0xC1 which equals decimal 193. In ASCII, 'A' is decimal 65. This difference is fundamental — the same letter has a decimal value nearly three times larger in EBCDIC than in ASCII. When processing mainframe data numerically, always use the EBCDIC decimal value, not the ASCII decimal value.
The full table shows four columns per byte: (1) EBCDIC Hex — the input byte in hexadecimal, (2) EBCDIC Decimal — the base-10 integer value of the EBCDIC byte (0–255), (3) ASCII Decimal — the decimal value of the equivalent ASCII character, and (4) ASCII Char — the printable character. This is the most complete view for verifying code page translations and debugging byte-level encoding issues.
Supported EBCDIC codesets include CP037 (US/Canada), CP500 (International), CP1047 (Open Systems), CP1140 (CP037 with Euro sign), CP285 (UK), CP273 (Germany/Austria), CP277 (Denmark/Norway), CP278 (Finland/Sweden), CP280 (Italy), CP284 (Spain/Latin America), CP297 (France), and CP871 (Iceland).
Yes. Paste multiple EBCDIC hex sequences — one per line — and all lines are converted simultaneously. You can also upload a .txt file containing multiple EBCDIC hex lines for batch conversion.
EBCDIC and ASCII use completely different character mapping tables. IBM designed EBCDIC in 1964 based on punched card technology, assigning characters in a non-sequential order. ASCII was designed separately with a logical, sequential layout. As a result, the same character maps to a different decimal byte value in each encoding — e.g. 'A' is decimal 193 in EBCDIC CP037 but decimal 65 in ASCII.
Yes, completely free with no registration required. All conversion processing happens in your browser — no EBCDIC data is sent to any server. Your input is private and never leaves your device.
Min and Max show the lowest and highest EBCDIC decimal byte values in your input. This is useful for validating that your byte values fall within expected ranges, identifying potential control characters (low values like 0–31), and checking for any anomalous byte values that might indicate data corruption.

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