Docker Port Mapping Calculator

Configure container-to-host network port bindings, generate precise Docker CLI flags (`-p`), and structure Docker Compose port mapping blocks.

Host IP (Optional):

Host Port:

Container Port:

Protocol:

Additional Options:

Dynamic Host Port Allocation (omit host port)

Port Configuration Summary:

Ready to calculate network port bindings...

Generated Syntax (CLI & Compose): Ready

Port Mapping Reference

Binding to `127.0.0.1` restricts container service access exclusively to the local host machine, preventing external network exposure.

Exposing ports documents container network requirements via Dockerfiles, while publishing ports actively maps host interfaces to container ports.

Docker defaults to binding the published port to all available network interfaces (`0.0.0.0`), making the service accessible from external networks.

You can execute docker port <container-id> in your terminal to inspect active port bindings.

Yes. You can specify port ranges using colon formatting, such as `-p 8000-8010:8000-8010/tcp`.