Parquet to CSV Converter
Convert Apache Parquet files to CSV format instantly in your browser. No uploads, no server — all processing is 100% client-side.
How to Use Parquet to CSV Converter
How to Use Parquet to CSV Converter
What is Apache Parquet?
Apache Parquet is a columnar storage format widely used in big data ecosystems (Hadoop, Spark, BigQuery, Redshift, Snowflake). It is optimized for reading and writing large datasets efficiently. CSV (Comma-Separated Values) is a simpler, universally-supported format ideal for spreadsheets and data analysis tools.
Step 1: Upload Your Parquet File
Click the upload area or drag and drop your .parquet file. Maximum file size: 50MB. All processing happens entirely in your browser — your file is never uploaded to any server.
Step 2: Convert
Click "Convert to CSV" to parse the Parquet file and generate CSV output. The tool extracts all columns and rows, preserving column headers.
Step 3: Download
Click "Download CSV" to save the converted file. The output file uses the same base name as the input with a .csv extension.
Stats
After conversion, the tool shows:
- Row count — total number of data rows
- Column count — number of columns in the schema
Use Cases
- Data Pipeline Debugging — Inspect Parquet output from Spark or Flink jobs
- Analytics Export — Convert BigQuery/Redshift/Snowflake Parquet exports to CSV
- ML Datasets — Export Parquet-format training data to CSV for manual inspection
- ETL Validation — Compare Parquet data against source CSV after transformation
- Spreadsheet Analysis — Load Parquet data into Excel or Google Sheets via CSV
Tips
- Parquet files from partitioned datasets (e.g.,
part-00000.parquet) can be converted individually - Nested/complex types (arrays, structs) are converted to their string representation
- Large files (10MB+) may take a few seconds to process in the browser
- All processing is offline after page load — no internet required
Frequently Asked Questions
Most Viewed Tools
Screen Size Converter
Calculate screen width and height from diagonal size and aspect ratio. Convert between inches and centimeters for displays, TVs, and monitors with instant dimension calculations.
Use Tool →Reorder PDF Pages
Drag and drop to rearrange PDF pages in any order. Upload your PDF, preview all pages as thumbnails, drag pages to reorder them, and download the rearranged PDF. Fast, visual, and privacy-focused.
Use Tool →DPI Calculator
Calculate DPI (dots per inch), image dimensions, and print sizes. Convert between pixels and physical dimensions for printing and displays.
Use Tool →Paper Size Converter
Convert between international paper sizes (A4, Letter, Legal) with dimensions in mm, cm, and inches. Compare ISO A/B series and North American paper standards.
Use Tool →Fuel Consumption Converter
Convert between MPG (miles per gallon), L/100km (liters per 100 kilometers), and other fuel efficiency units. Compare car fuel economy across different measurement systems.
Use Tool →CSV Splitter
Split large CSV files into smaller files by number of rows. Process large datasets in manageable chunks instantly.
Use Tool →Product Schema Generator
Generate JSON-LD Product schema markup for SEO. Add product details like name, price, brand, rating, and availability to create structured data for rich search results.
Use Tool →Large Text File Viewer
View and search large text files up to 200MB in your browser. Features virtual scrolling, line numbers, search functionality, and file statistics. Perfect for log files, CSV, JSON, and code files.
Use Tool →Related Development Tools
QR Code Generator
FeaturedCreate custom QR codes for URLs, text, and contact info
Use Tool →CSS to SCSS Converter
Convert plain CSS to SCSS/Sass instantly. Automatically nests child selectors under their parents, extracts repeated hex colors as $variables, and preserves @media blocks — no server required.
Use Tool →YAML to TOON Converter
Convert YAML to TOON (Token Oriented Object Notation) and reduce LLM token usage. Free, instant, browser-based.
Use Tool →YAML to JSON Converter
Convert YAML data to JSON format instantly. Supports nested objects, arrays, and multi-level structures. Output as pretty-printed or minified JSON. 100% client-side and free.
Use Tool →JSON Schema Generator
Paste any JSON object and instantly generate a JSON Schema Draft-7 document. Infers types for strings, numbers, integers, booleans, null, nested objects, and arrays. Marks non-null fields as required and sets additionalProperties to false. Free and runs entirely in your browser.
Use Tool →JSON to YAML Converter
Convert JSON data to YAML format instantly. Perfect for config files, CI/CD pipelines, Kubernetes manifests, and infrastructure-as-code workflows. 100% client-side and free.
Use Tool →Ruby Formatter
Format and clean up Ruby code instantly in your browser. Fix indentation, align end blocks, and normalize string quotes — no server required.
Use Tool →Log File Analyzer
Upload a log file to instantly see error counts, log level distribution, top IPs, and top paths — then run AI-powered analysis to identify errors, anomalies, and performance issues.
Use Tool →Share Your Feedback
Help us improve this tool by sharing your experience