PlatPhorm News Network

Modernize COBOL in Minutes

Name: COBOL AI
Author: PlatPhorm News Network

COBOL — the "self-documenting" programming language — still powers the world's most critical systems. Our AI translates, tests compliance, and documents legacy code live in your browser.

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bank-balance.cbl

Legacy

1IDENTIFICATION DIVISION.

2PROGRAM-ID. BANK-BALANCE.

3DATA DIVISION.

401 WS-BALANCE PIC 9(7)V99.

501 WS-STATUS PIC X(1).

6 88 OVERDRAWN VALUE 'Y'.

7PROCEDURE DIVISION.

8 COMPUTE WS-BALANCE = WS-BALANCE + AMT

9 IF WS-BALANCE < 0

10 SET OVERDRAWN TO TRUE

11 PERFORM OVERDRAFT-FEE

12 END-IF.

Upgrading to COBOL 2023ISO/IEC 1989:2023

1*> COBOL 2023 (ISO/IEC 1989:2023)

2identification division.

3program-id. bank-balance.

4data division.

501 ws-balance float-decimal-34.

601 ws-overdrawn boolean value false.

7procedure division.

8 try

9 compute ws-balance = ws-balance + amt

10 if ws-balance < 0

11 set ws-overdrawn to true

12 raise overdraft-exception

13 catch overdraft-exception

14 perform apply-overdraft-fee

15 end-try.

220B+Lines of COBOL in production

95%Of ATM transactions

43%Of banking systems

60+Years of legacy code

Enterprise-Grade Modernization

Everything you need to take legacy COBOL from mainframe to modern stack, with confidence.

AI-Powered Translation

Convert COBOL to Java, Python, TypeScript, C#, or COBOL 2023 while preserving every line of business logic. Idiomatic output, not line-by-line transliteration.

Compliance Testing

Automated analysis for Y2K patterns, data type risks, boundary conditions, and business logic preservation. Get a risk rating before you ship.

Deep Static Analysis

Instant complexity scoring, data dictionary extraction, risk assessment, and cost estimation. Zero AI tokens -- runs on our static engine.

Self-Documenting Analysis

COBOL is the "self-documenting" language. We leverage that clarity to generate comprehensive documentation, data dictionaries, and flow diagrams.

Kanban Pipeline Tracking

Plan complex modernizations with kanban.platphormnews.com integration. Track tasks through backlog, analysis, translation, compliance, testing, and done.

Live Results, In Minutes

We test it right in front of you. Paste your COBOL, click Modernize, and watch AI stream the results in real time. No signup, no waiting.

Try It Right Now

Paste your COBOL code, choose a target, and watch AI modernize it in real time. No signup required.

input.cbl

COBOL

IDENTIFICATION DIVISION.
       PROGRAM-ID. BANK-BALANCE.
       AUTHOR. LEGACY-SYSTEMS.
      *
       ENVIRONMENT DIVISION.
       INPUT-OUTPUT SECTION.
       FILE-CONTROL.
           SELECT ACCOUNT-FILE ASSIGN TO 'ACCTFILE'
               ORGANIZATION IS INDEXED
               ACCESS MODE IS DYNAMIC
               RECORD KEY IS ACCT-NUMBER
               FILE STATUS IS WS-FILE-STATUS.
      *
       DATA DIVISION.
       FILE SECTION.
       FD ACCOUNT-FILE.
       01 ACCOUNT-RECORD.
           05 ACCT-NUMBER        PIC 9(10).
           05 ACCT-NAME          PIC X(30).
           05 ACCT-BALANCE       PIC S9(9)V99.
           05 ACCT-TYPE          PIC X(1).
               88 CHECKING       VALUE 'C'.
               88 SAVINGS        VALUE 'S'.
           05 ACCT-STATUS        PIC X(1).
               88 ACTIVE         VALUE 'A'.
               88 CLOSED         VALUE 'X'.
      *
       WORKING-STORAGE SECTION.
       01 WS-FILE-STATUS         PIC XX.
       01 WS-TRANSACTION.
           05 WS-TRANS-TYPE      PIC X(1).
               88 DEPOSIT        VALUE 'D'.
               88 WITHDRAWAL     VALUE 'W'.
           05 WS-TRANS-AMOUNT    PIC S9(9)V99.
       01 WS-NEW-BALANCE         PIC S9(9)V99.
       01 WS-MIN-BALANCE         PIC S9(9)V99 VALUE 25.00.
       01 WS-OVERDRAFT-FEE       PIC S9(5)V99 VALUE 35.00.
      *
       PROCEDURE DIVISION.
       MAIN-LOGIC.
           OPEN I-O ACCOUNT-FILE
           PERFORM PROCESS-TRANSACTION
           CLOSE ACCOUNT-FILE
           STOP RUN.
      *
       PROCESS-TRANSACTION.
           READ ACCOUNT-FILE
               INVALID KEY
                   DISPLAY 'ACCOUNT NOT FOUND: ' ACCT-NUMBER
                   GO TO PROCESS-TRANSACTION-EXIT
           END-READ
      *
           IF NOT ACTIVE
               DISPLAY 'ACCOUNT CLOSED: ' ACCT-NUMBER
               GO TO PROCESS-TRANSACTION-EXIT
           END-IF
      *
           EVALUATE TRUE
               WHEN DEPOSIT
                   ADD WS-TRANS-AMOUNT TO ACCT-BALANCE
                       GIVING WS-NEW-BALANCE
                   MOVE WS-NEW-BALANCE TO ACCT-BALANCE
               WHEN WITHDRAWAL
                   SUBTRACT WS-TRANS-AMOUNT FROM ACCT-BALANCE
                       GIVING WS-NEW-BALANCE
                   IF WS-NEW-BALANCE < WS-MIN-BALANCE
                       SUBTRACT WS-OVERDRAFT-FEE FROM WS-NEW-BALANCE
                       DISPLAY 'OVERDRAFT FEE APPLIED'
                   END-IF
                   MOVE WS-NEW-BALANCE TO ACCT-BALANCE
           END-EVALUATE
      *
           REWRITE ACCOUNT-RECORD
               INVALID KEY
                   DISPLAY 'UPDATE FAILED: ' ACCT-NUMBER
           END-REWRITE.
      *
       PROCESS-TRANSACTION-EXIT.
           EXIT.

output.ts

Click Modernize to translate your COBOL code

Transparent, Cost-Efficient Pricing

Know exactly what modernization costs before you commit. Our static analyzer gives you an instant estimate -- zero AI tokens consumed.

TierSizeCostExample

Trivial< 50 lines$0.02/lineHello World, date utilities

Simple50-200 lines$0.05/lineReports, batch scripts

Moderate200-1K lines$0.12/lineTransaction processing

Complex1K-5K lines$0.25/lineCore banking modules

Enterprise5K+ lines$0.40/lineFull mainframe systems

Estimates based on non-blank code lines. Use the Analyze tab in the playground for a precise quote on your specific program. Enterprise volume discounts available.

How It Works

Three steps from legacy COBOL to production-ready modern code.

Paste Your COBOL

Drop in any COBOL program or choose from our pre-loaded enterprise samples. From Hello World to 10,000-line mainframe modules.

Analyze & Estimate

Our static engine scores complexity, detects risks, and estimates cost instantly -- before burning a single AI token. Plan with confidence.

Modernize & Track

AI translates, validates compliance, and generates docs. For large programs, push to the Kanban pipeline for phased delivery.

Built for Mission-Critical Systems

Trusted by teams modernizing banking, government, and insurance infrastructure.

Secure by Design

AES-GCM encrypted sessions, no server persistence, no training on your code. Your IP stays yours.

Session Isolation

Cryptographic session IDs, 24-hour TTL, PBKDF2 key derivation. Zero cross-session leakage.

Enterprise Pipeline

Kanban-integrated modernization workflow: backlog through done. Track complex migrations with audit trail.

Open Standards

OpenAPI, RSS, sitemap, MCP, LLM discovery, i18n in 8 languages. Integrate with everything.

Why Teams Trust COBOL AI

Business logic preservation verified

Static analysis before AI -- no surprise costs

Instant complexity scoring (0-100)

Y2K pattern detection built in

Kanban tracking for multi-phase projects

PlatPhorm News Network (130+ sites)

MCP-compatible tool endpoints

Transparent per-line pricing