Converting between config formats — GitHub Actions workflows, Kubernetes manifests, OpenAPI specs, Docker Compose, and more.

Does it support all of YAML?

It handles the YAML 1.2 subset most configs use: mappings, sequences, scalars, and block literals. Exotic anchors and custom tags are not supported.

Completely free. All conversion happens in your browser.

YAML ⇄ JSON Converter

Convert YAML and JSON back and forth right in the browser — useful for infra and API work where you constantly move between the two formats. Indent width is configurable, and parse errors are surfaced inline so you can fix invalid input quickly.

IP Address / Subnet Input

IP Address

CIDR (/24)

Common CIDR:

Result

Network Address

192.168.1.0

Broadcast Address

192.168.1.255

Subnet Mask

255.255.255.0

Wildcard Mask

0.0.0.255

Host Range (Min)

192.168.1.1

Host Range (Max)

192.168.1.254

Total Addresses

256

Usable Hosts

254

Class

Type

Private

Binary Representation

Network Address

11000000.10101000.00000001.00000000

Subnet Mask

11111111.11111111.11111111.00000000

CIDR Reference Table

CIDR	Subnet Mask	Hosts
/8	255.0.0.0	16,777,214
/16	255.255.0.0	65,534
/20	255.255.240.0	4,094
/22	255.255.252.0	1,022
/24	255.255.255.0	254
/25	255.255.255.128	126
/26	255.255.255.192	62
/27	255.255.255.224	30
/28	255.255.255.240	14
/29	255.255.255.248	6
/30	255.255.255.252	2
/32	255.255.255.255	1

Practical Guide

Developer utilities for JSON, Cron, HTTP, URLs, UUIDs, subnets, and other checks that come up repeatedly during development and operations. Designed for quick validation before opening heavier tools.

When this tool is useful

YAML ⇄ JSON Converter helps with common Developer Tools tasks that require quick checking, conversion, or creation. It supports workflows such as Bidirectional YAML ↔ JSON conversion, 2 or 4 space indent control without forcing users to switch pages or apps.

Processing and privacy

Your input is processed in the browser and is not designed to be sent to a server just to use the tool. This makes it suitable for temporary checks, draft work, and pre-publication cleanup.

Workflow tip

After checking the result, use the related tools and same-category links near the bottom of the page to continue the surrounding task. Frequently used tools also appear in the Recently Used section.