Data & Conversion
CSV ↔ JSON ↔ YAML ↔ XML
Convert between CSV, JSON, YAML and XML formats.
Universal Data Converter — CSV, JSON, YAML & XML
Data interchange across APIs and backend systems frequently requires transforming structured files between CSV, JSON, YAML, and XML formats. This online data converter allows seamless multi-directional conversion across all four data formats. Auto-detection parses your input automatically, handling comma-separated tables, nested JSON trees, YAML mappings, and XML element trees cleanly. Convert tabular CSV to JSON arrays for API payloads, transform JSON to YAML for Kubernetes and Docker configurations, or generate clean XML feeds. Everything processes 100% in your browser without any server processing.
Frequently Asked Questions
How does CSV to JSON conversion work for nested objects?
Standard CSV is tabular (flat rows and columns). When converting CSV to JSON, each row becomes an object whose keys correspond to the header row. For nested structures, dots in headers (e.g. user.name) are parsed into nested JSON objects.
Can it convert complex nested JSON to CSV?
Converting nested JSON or YAML to CSV flattens nested objects into dot-notated column names (e.g. user.email). Array items are joined by semicolons to maintain single-row records per record.
Is there a file size limit?
Because processing occurs in memory inside your browser tab, performance depends on your device's memory. Most files up to 10 MB convert in under a second.