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JSON to .env Converter

Convert JSON objects to .env environment variable format and vice versa. Supports key prefixing, nested object flattening, sorting, and quoting. Runs entirely in your browser — your data never leaves your machine.

json env environment converter dotenv

Published May 30, 2026

All interactive tools run entirely in your browser. Your data never leaves your device.

How It Works

Paste a JSON object to get .env format output, or paste .env content to get JSON. Configure key prefixing, sorting, and nested object flattening.

Features

  • Bidirectional: convert JSON to .env and .env to JSON
  • Key prefix: add a prefix to all variable names (e.g., APP_)
  • Flatten nested objects: convert {"db":{"host":"x"}} to DB_HOST="x"
  • Sort keys: alphabetical ordering of output variables
  • Quote values: configurable value quoting with proper escaping
  • Comment handling: skips # comments when parsing .env
  • 5 examples: simple, prefixed, nested, reverse, sorted
  • Private: runs entirely in the browser — no data transmitted

Use Cases

  • Converting API response JSON to environment variables
  • Migrating between .env and JSON configuration formats
  • Generating .env files from JSON config templates
  • Parsing existing .env files into structured JSON