# XLSX Parquet Exporter

Export worksheet data to Parquet and/or NDJSON for data lake and data warehouse pipelines

> Canonical page: https://elysiatools.com/en/tools/xlsx-parquet-exporter

- **Category:** Format Conversion

- **Keywords:** xlsx, parquet, ndjson, etl, warehouse, pipeline, export

## Overview

Export tabular Excel data to analytics-friendly formats.

- `Parquet` for columnar warehouse pipelines
- `NDJSON` for streaming ingestion and logs
- Auto schema inference with type casting

## Inputs

- **Excel File** (file)
- **Sheet Name** (text): Sheet1
- **Header Row** (number)
- **Output Mode** (select)
- **Sanitize Field Names** (checkbox)
- **Convert Empty to Null** (checkbox)

## When to use

- Preparing Excel datasets for ingestion into columnar data warehouses like BigQuery, Snowflake, or Redshift.
- Converting static spreadsheet logs into NDJSON for streaming ingestion into real-time analytics platforms.
- Standardizing messy Excel files into structured, schema-inferred formats for automated ETL workflows.

## How it works

- Upload your Excel file and specify the target sheet and header row location.
- Select your preferred output format: Parquet for columnar storage, NDJSON for streaming, or both.
- Enable field name sanitization and null conversion to ensure data compatibility with downstream database schemas.
- Download the processed file or ZIP archive ready for your data pipeline.

## Use cases

- Automating the migration of monthly financial reports from Excel into a centralized data lake.
- Converting user-submitted survey data from spreadsheets into NDJSON for ingestion into a NoSQL database.
- Standardizing inconsistent spreadsheet headers for reliable loading into a production data warehouse.

## Frequently asked questions

### Why use Parquet over CSV for data warehouses?

Parquet is a columnar storage format that offers superior compression and query performance compared to row-based formats like CSV.

### What happens to empty cells in my Excel file?

If 'Convert Empty to Null' is enabled, the tool automatically maps blank cells to null values, preventing schema errors during ingestion.

### Can I export multiple sheets at once?

The tool processes one sheet at a time. You can specify the sheet name to target the exact data you need to export.

### What does 'Sanitize Field Names' do?

It automatically cleans column headers by removing special characters and spaces, ensuring they meet strict naming conventions required by most SQL databases.

### Is there a limit to the file size?

The tool supports files up to 100MB, which is sufficient for most standard analytical datasets.

## Related tools

- [XLSX Chart Embedder](https://elysiatools.com/en/tools/xlsx-chart-embedder): Embed generated chart images into Excel workbooks using workbook data ranges for bar or pie chart reports
- [XLSX Conditional Formatting Rule](https://elysiatools.com/en/tools/xlsx-conditional-formatting-rule): Batch-apply conditional formatting rules such as threshold highlights, data bars, and color scales to Excel worksheets
- [XLSX Sheet To JSON Schema](https://elysiatools.com/en/tools/xlsx-sheet-to-json-schema): Infer JSON Schema from worksheet headers and sample rows with types, enum candidates, and basic constraints
- [Excel to JSON Converter](https://elysiatools.com/en/tools/excel-to-json): Convert Excel file to JSON format, extracting data from the first worksheet
- [XLSX Print Setup Pack](https://elysiatools.com/en/tools/xlsx-print-setup-pack): Apply paper, margins, scaling, repeating titles, and header/footer print settings to Excel workbooks in one pass
- [XLSX Formula Injector](https://elysiatools.com/en/tools/xlsx-formula-injector): Fill formulas down worksheet columns and optionally lock formula cells for protected, template-friendly Excel workbooks
- [XLSX Freeze Pane Manager](https://elysiatools.com/en/tools/xlsx-freeze-pane-manager): Freeze top rows/left columns automatically and apply row or column outline groups for easier spreadsheet reading
- [XLSX JSON Transformer](https://elysiatools.com/en/tools/xlsx-json-transformer): Bidirectional conversion between JSON arrays and Excel sheets, with nested object flattening and restoration

## Samples

- [XLSX Samples](https://elysiatools.com/en/samples/xlsx-samples): Sample XLSX spreadsheets for worksheet parsing and data extraction testing
- [XLS Samples](https://elysiatools.com/en/samples/xls-samples): Sample legacy Excel (XLS) files for binary spreadsheet parsing and import tests
- [Parquet File Samples](https://elysiatools.com/en/samples/parquet-file-samples): Downloadable Parquet sample files from simple to complex for ETL and warehouse pipeline testing
- [Parquet Samples](https://elysiatools.com/en/samples/parquet): Apache Parquet columnar storage format examples with schemas, compression, and data processing

## Related content

- [XLSX ETL Ingestion and Warehouse Handoff](https://elysiatools.com/en/hubs/xlsx-etl-ingestion-workflows): Turn mixed workbook and CSV sources into traceable, schema-aware outputs for SQL loading, Parquet pipelines, and object-storage batch handoff.