CSV to TSV Converter
Convert comma-separated records to tab-separated text. Quoted commas, tabs and line breaks remain inside their cells; download the TSV for your next import.
Open toolCSV to Parquet Converter
Write CSV records into a real Parquet file with UTF-8 string columns. Numbers and dates remain text, preserving leading-zero identifiers for later processing.
Free to useNo sign-upRuns in your browser
Enter your details
Enter the inputs, then select Convert to Parquet.
Your result
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Result will appear here
How CSV to Parquet Converter works
Parse CSV headers and store every cell as a UTF-8 string in Parquet columns.
Processing uses bundled libraries in this browser. The download contains the generated source or document, rather than a link to a conversion service.
How to convert to Parquet
Start with the supported input, then check the generated result.
Input and settings
Check the input settings
Read the supported input format and size limits before submitting.
Tool result
Review and save the output
Review a valid uncompressed Parquet file. Download the generated file and check it in the application where you plan to use it.
Review the details
When to use CSV to Parquet Converter
These workflows use the formats and behavior supported by this implementation.
Move tabular text into Parquet
Create a standards-based Parquet file when the next workflow expects columns instead of delimited text.
Preserve leading-zero identifiers
An identifier such as 001 remains a string instead of becoming the number 1. Dates and numbers also remain UTF-8 strings.
Create string columns for later typing
Assign types later in your data system when you know the intended schema. This converter does not guess column types from cell values.
What the output contains
Keep the output format and conversion policy in view.
A valid uncompressed Parquet file. Parse CSV headers and store every cell as a UTF-8 string in Parquet columns.
Compare the result with the original before replacing a source file. Conversion limits are listed below.
Supported input and limits
Check these conditions before relying on the result.
All columns are strings, including numbers and dates, so identifiers retain leading zeros. Unique nonempty headers required. Up to 5,000 rows and 100 columns; no type inference.
Input and results are not stored after leaving or reloading. Keep the original and download any output you need.
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Open toolConvert to Parquet with your input
Generate the supported output, review it, and save a copy for your next step.
CSV to Parquet Converter: common questions
Answers about using CSV to Parquet Converter and understanding its results.
What does this tool produce?
It produces a valid uncompressed Parquet file. All columns are strings, including numbers and dates, so identifiers retain leading zeros. Unique nonempty headers required. Up to 5,000 rows and 100 columns; no type inference.
Is my input uploaded?
Processing runs in this browser with local bundled libraries. No input is sent to a conversion server. Download your result before leaving the page.