Ruby Hash ⇄ JSON Converter

Instantly convert Ruby Hash objects to JSON and vice-versa. Perfect for Rails developers, API integrators, and anyone working with Ruby & JSON data interchange. Free, secure, and no server-side processing.

Input Ruby Hash
Paste your Ruby Hash here or upload a file.
Output JSON
Your converted JSON will appear here.
1Converted JSON output

Key Features

  • Real-time bidirectional conversion
  • Syntax highlighting & error detection
  • Upload & download files
  • Zero data retention—100% client-side

Common Use-Cases

  • Migrate Rails session data to APIs
  • Convert Ruby fixtures for JavaScript tests
  • Share configuration between backend & frontend
  • Debug JSON responses in Ruby-friendly format

Supports Ruby 3+ syntax, symbol keys, string keys, nested hashes, arrays, nil, booleans, integers, floats, and strings. Handles JSON-compliant output compatible with MongoDB, PostgreSQL JSONB, REST APIs, GraphQL, and more.