Convert Parquet to CSV Online

Converting Parquet to CSV makes your data readable by any tool — Excel, Google Sheets, database COPY commands, and virtually every programming language and data platform. CSV is the universal handoff format when Parquet's binary structure is a barrier: sharing data with colleagues who don't have a data engineering toolchain, loading into systems that only accept flat files, or quickly inspecting contents without a Python environment.

Common use cases include exporting a data warehouse table for an Excel-based report, sharing a dataset sample with external partners, loading data into PostgreSQL using COPY FROM, and debugging a Parquet file's contents. This tool runs entirely in your browser — no Python, no pandas, no server. Drop the file, convert, and download.

Note that Parquet can store complex types — nested structs, list arrays, and map columns — that have no direct CSV equivalent. These will be serialised as JSON strings in the CSV output. Timestamps with timezone information lose the timezone offset in CSV (the local time value is preserved). For large Parquet files, the CSV output will be significantly larger due to CSV's lack of compression.