100% Local Processing · No uploads · No accounts · No data stored

Convert CSV to Any Format Right in Your Browser

Drop a spreadsheet, pick an output, and download the result. Everything runs on your device — the file never leaves your machine.

Fast Instant conversion
Private Runs locally
Free to use No sign-up required

Convert a CSV without handing it to anyone. Drop a spreadsheet, pick an output format, and download the result. Everything runs in your browser — the file never leaves your machine.

Drop your CSV or TSV file here or click to browse files

info Supports CSV, TSV, TXT • Max file size: 100 MB

Convert to:

More formats coming soon

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shield Sandbox RAM only

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Data Preview

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Detected Delimiter

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Data Profile Composition

Waiting for parse…

Output

Delimiter

Encoding

First row contains headers Skip empty rows & whitespace lines

data_object JSON Output Schema Standard

Array of objects [{ id: 101, ... }, { ... }] Newline-delimited (NDJSON) One json line per record Nested by primary key { "101": { ... }, ... }

Pretty print layout

Indentation depth

2 spaces

Cast numeric strings to numbers

Estimated output payload —

verified_user

Zero Data Telemetry: Processing executes in local memory threads. No network activity.

Works offline

Once loaded, the converter keeps working without a network.

Handles large files

Streaming parse keeps the tab responsive up to 100 MB.

Keeps your structure

Headers, order, and types stay intact in the export.

Privacy first

No upload endpoint. Parsing happens in a local worker.

Convert to any format

Every destination has a purpose-built writer — not a generic dump.

JSON

.json

An array of objects, one per row. Switch to NDJSON for line-delimited output.

Excel

.xlsx

One sheet, typed cells, header row frozen and column widths sized to content.

PDF

.pdf

A paginated table with the header repeated on every page. A4 or Letter, portrait or landscape.

XML

.xml

Nested elements with your own root and row tag names. Attributes optional.

YAML

.yaml

Block style, two-space indent, strings quoted only where they need to be.

SQL

.sql

A CREATE TABLE plus batched INSERTs for Postgres, MySQL or SQLite.

Markdown

.md

Markdown gives you a pipe table with aligned columns, ready to paste into a README or a ticket.

Browse all formats →

How a conversion runs

Drop the file

Delimiter, encoding and header row are detected on the first few kilobytes.

Choose a format

Pick JSON, Excel, PDF, XML, YAML, SQL or Markdown and tune options.

Download

The finished file is assembled in memory and saved to your downloads folder.

Why use ConvertRow?

Fully browser-based

No uploads, no accounts, no server round-trips. Every conversion happens on your device using local workers.

Fast on large files

Streaming parse keeps the tab responsive even on files with hundreds of thousands of rows.

Always free

Every format, every conversion, no limits and no paywall. Open the page and get to work.

From the guides

Practical walkthroughs on data conversion, CSV tips, and format-specific tricks.

CSV to SQL: Generating INSERT Statements for Database Migration

Moving data from a spreadsheet into a relational database is one of the most common data-engineering tasks. Converting a CSV to SQL INSERT statements gives you a script you can...

CSV to Markdown Tables: Embed Data in Your Documentation

Markdown has become the default writing format for developer documentation, GitHub READMEs, Notion pages, Confluence, and static-site generators. When you need to include tabular data in any of these tools,...

CSV to YAML: A Developer’s Guide to Configuration Data

YAML is the configuration language of the DevOps world — Kubernetes manifests, Ansible playbooks, GitHub Actions workflows, and Rails fixtures all use it. If your data starts as a spreadsheet...

CSV to XML: Structuring Data for APIs and Enterprise Systems

XML remains the lingua franca of enterprise systems, SOAP web services, configuration files, and product data feeds. Converting a CSV to XML lets you feed tabular data into these systems...

All guides →

Frequently asked questions

What can I convert with ConvertRow?

ConvertRow converts CSV files into JSON, Excel (.xlsx), PDF, XML, YAML, SQL INSERT statements, and Markdown tables. Pick a format, adjust any options, and download — all in a single step.

Does my file get uploaded to a server?

No. Every conversion runs entirely in your browser using local workers. Your CSV is never sent to any server, which means it stays on your device the whole time.

Is there a file size limit?

There is no hard cap. The converter uses a streaming parser so it stays responsive even on files with hundreds of thousands of rows. Very large PDFs may take a moment to render in the browser.

Which browsers are supported?

Any modern browser that supports Web Workers works — Chrome, Firefox, Safari, and Edge. No extensions or plugins needed.

Is ConvertRow free to use?

Yes. Every format, every conversion, and every feature is free with no account required. There are no rate limits or paywalled tiers.

How do I convert a CSV to JSON?

Open the converter, drop or paste your CSV file, select JSON as the target format, choose whether you want an array of objects or NDJSON, and click Download.

Can I convert to Excel or PDF?

Yes. The Excel export produces a properly formatted .xlsx file with typed cells and a frozen header row. The PDF export creates a paginated table — you can choose A4 or Letter and portrait or landscape.

Where can I learn more about each format?

The Formats page has a dedicated guide for every supported output with examples and tips. The blog also covers practical data-conversion workflows in depth.