Open Parquet Market Data in Excel or CSV

Parquet is great for pipelines but you cannot double-click it. Sometimes you just need to look at the numbers.

Open the Parquet to Excel converter

Open the Parquet to Excel or Parquet to CSV converter, drop the file and download the result. Everything is read in your browser.

Check the size first. Excel holds up to 1,048,576 rows per sheet, and a Parquet file of minute or tick data can hold far more. If it does, convert to CSV, filter to the symbols or dates you need first, or query it with SQL in large file mode.

Timestamps need attention: Excel may show seconds only, so a millisecond time can look rounded even though the value is kept. Keep symbols as text. To look at just a sample, use the SQL tool with a LIMIT and download that.

Everything runs in your browser and nothing is uploaded.

Open the Parquet to Excel converter

Related tool pages

  • JSON, CSV, Parquet and Excel Converter: Convert between JSON, CSV, Parquet and Excel online for free, one file or a whole folder. It runs in your browser, so nothing is uploaded.
  • JSON to CSV Converter: Convert JSON to CSV in seconds. Drop a file or paste data and download the result. Private: it runs in your browser and nothing is uploaded. Large files too.
  • CSV to JSON Converter: Convert CSV to JSON in seconds. Drop a file or paste data and download the result. Private: it runs in your browser and nothing is uploaded. Large files too.
  • CSV to Parquet Converter: Convert CSV to Parquet in seconds. Drop a file or paste data and download the result. Private: it runs in your browser and nothing is uploaded. Large files too.
  • JSON to Parquet Converter: Convert JSON to Parquet in seconds. Drop a file or paste data and download the result. Private: it runs in your browser and nothing is uploaded.
  • Parquet to CSV Converter: Convert Parquet to CSV in seconds. Drop a file or paste data and download the result. Private: it runs in your browser and nothing is uploaded. Large files too.

How to use the Parquet to Excel converter: step by step

  1. Open the Parquet to Excel or CSV converter.
  2. Drop the Parquet file.
  3. Check the row count against the Excel limit.
  4. Download the file and check the first and last rows.

When to use the Parquet to Excel converter

  • Look inside a Parquet price file
  • Share a sample with someone who uses Excel
  • Check a pipeline output
  • Spot-check timestamps and prices

Example

Input: sales.parquet

Output: sales.xlsx

Frequently asked questions

How do I open a Parquet file in Excel?

Excel cannot open Parquet directly. Drop the file into the Format Converter, choose Excel and download the .xlsx.

Is my file uploaded?

No. The conversion runs in your browser.

How big can a file be?

It depends on your device. A few hundred MB usually works.

Which conversions does the Format Converter support?

Any direction between JSON, CSV, Parquet and Excel (.xlsx), for one file or a whole folder. Nested JSON is flattened into columns such as address.city. For Excel, the first sheet is read; old .xls files are not supported.

Tip: For a quick look, run a SQL query with LIMIT 1000 and download only that.