Data

JSON to YAML Converter

Paste a JSON object or array and get clean, two-space indented YAML — ideal for Kubernetes manifests, GitHub Actions workflows, Ansible playbooks, and application configs. Conversion runs entirely in your browser.

Tool Summary Answer Block

This tool accepts structured input and returns deterministic output in the browser with no server upload.

Tool name: JSON to YAML Converter
Input intent: Provide source content to transform, validate, or analyze.
Output intent: Receive normalized output suitable for copy, reuse, or debugging.
Example input: {"name":"api","replicas":3,"env":["prod","staging"]}
Example output: name: api replicas: 3 env: - prod - staging

JSON inputDrop file

Paste JSON above and click Convert to YAML.

YAML outputRead-only

Tool Introduction

Tool Overview

YAML is the de-facto config format for CI/CD pipelines and infrastructure-as-code because it is easier for humans to scan than JSON. This converter reads your JSON with the strict built-in parser, then emits YAML using plain-style scalars where safe and double-quoted strings when a value is ambiguous (looks like a number, boolean, or reserved keyword). Nested objects become block mappings, arrays become sequences, and empty collections collapse to `{}` or `[]`.

Use Cases

Turn API response fixtures into readable YAML for docs
Rewrite JSON Kubernetes manifests as YAML
Seed a GitHub Actions matrix from a JSON list
Convert Postman/Insomnia exports for tooling that prefers YAML

Input/Output Examples

Input Intent

{"name":"api","replicas":3,"env":["prod","staging"]}

Output Intent

name: api
replicas: 3
env:
  - prod
  - staging

Strings that look like numbers (like "3") are quoted so they round-trip safely.

Input Intent

{"version":"3","services":{"web":{"image":"nginx","ports":["80:80"]}}}

Output Intent

version: "3"
services:
  web:
    image: nginx
    ports:
      - "80:80"

Top-level JSON arrays become block sequences.

Input Intent

[{"id":1,"active":true},{"id":2,"active":false}]

Output Intent

- id: 1
  active: true
- id: 2
  active: false

FAQ

Is my JSON uploaded anywhere?+

No. The conversion runs 100% in your browser — nothing is transmitted to a server, logged, or stored.

Is this JSON to YAML converter free?+

Yes. Every UtilitySansar tool is free, unlimited, and has no ads inside the tool area.

Why are some of my strings quoted in the output?+

Values that look like numbers, booleans, null, or contain characters YAML treats specially (:, #, -, leading spaces) are double-quoted so they round-trip back to the same JSON value.

Does it support YAML anchors, tags, or multi-line scalars?+

Not yet. The output uses block and flow scalars only, which covers the vast majority of real-world Kubernetes, GitHub Actions, and Docker Compose configs.

What indentation does it use?+

Two spaces per level, matching the default for Kubernetes, GitHub Actions, Ansible, and most YAML style guides.