Online COBOL Compiler
Write COBOL in the browser and run it on our machines. The editor is opening.
Free online COBOL IDE
JDoodle is an online IDE that has served the programming community since 2013. You write, compile, and run code in the browser for COBOL and many other languages, without installing a toolchain.
What you see on this page is JDoodle’s multi-file COBOL IDE. You can keep several files in one project, then execute on JDoodle’s servers. You do not need a JDoodle account to run code.
Online COBOL IDE
JDoodle’s COBOL editor on this page highlights syntax, completes as you type, matches brackets, and folds blocks. It is an online COBOL editor and a compiler together: you write here, then Execute runs your program on JDoodle’s servers.
COBOL versions on JDoodle
JDoodle currently ships these COBOL builds. Choose one from the version menu before you execute. The installed releases are GNU COBOL 2.0.0, GNU COBOL 2.2.0, GNU COBOL 3.0, GNU COBOL 3.1.2, and GNU COBOL 3.2.0.
| Version |
|---|
| GNU COBOL 2.0.0 |
| GNU COBOL 2.2.0 |
| GNU COBOL 3.0 |
| GNU COBOL 3.1.2 |
| GNU COBOL 3.2.0 |
Frequently asked questions
Is JDoodle’s online COBOL IDE free?
Yes. JDoodle lets you write and run COBOL without paying. A JDoodle account is only needed to save projects, use more AI credits, or unlock faster workspaces.
Do I need to install COBOL to use JDoodle?
No. JDoodle runs COBOL on its servers. Open this page in a browser and execute.
Which COBOL version should I pick on JDoodle?
Choose the version that matches the course or codebase you are working against from the version menu. The builds JDoodle has installed are GNU COBOL 2.0.0, GNU COBOL 2.2.0, GNU COBOL 3.0, GNU COBOL 3.1.2, and GNU COBOL 3.2.0.
Is this the single-file COBOL compiler?
No. This page is JDoodle’s multi-file COBOL IDE, for classes, packages and libraries split across files. The single-file compiler, which runs one file and starts faster, is the online COBOL compiler.
Is this an online COBOL editor or a compiler?
Both. The page is an online COBOL editor and it compiles and runs what you write.
Input, interactive runs, files, and the rest of the editor work the same on every language. See the JDoodle IDE documentation.