Data and files
01Copybook viewer
Paste a COBOL copybook and see every field's position, length and type.
02Record decoder
Read a mainframe data file with its copybook as a table, CSV or JSON.
03Packed decimal calculator
Turn numbers into packed, zoned or binary hex, and back.
04EBCDIC converter
Convert text to EBCDIC hex and back, in seven code pages.
05Mainframe date converter
Julian YYDDD, CYYDDD, Lilian days and STCK clock values to real dates.
06Block size and space calculator
Best BLKSIZE for your record length and the space a file needs on 3390.
JCL and sort
07JCL checker
Find common JCL mistakes and read each statement in plain English.
08JCL generator
Fill in a form to get ready-to-run JCL for everyday jobs.
09DFSORT helper
Build SORT, INCLUDE and OUTREC statements, or explain existing ones.