Free Online File Converter Tools — No Software Needed
You've got data in one format and need it in another. Maybe your client sent an Excel file but your database only accepts CSV. Maybe you pulled JSON from an API and your boss wants it in a spreadsheet. Or maybe you're staring at a photo of a handwritten table wondering if you really have to type all that data in manually. Our free online file converter tools handle the boring stuff so you don't have to — no software installs, no signup, just instant conversion.
Excel to CSV Converter — Universal Data Export
The Excel to CSV converter is one of the most-used tools in any developer or analyst's workflow. CSV (Comma Separated Values) is the universal format that databases, APIs, Python scripts, and virtually every data tool accepts. If you need to import data into MySQL, PostgreSQL, Google Sheets, or any ETL pipeline, converting Excel to CSV is the first step. Our tool handles .xlsx and .xls files with multiple sheets, letting you choose which sheet to export.
How to convert Excel to CSV: Upload your Excel file → select the sheet → click Convert → download your CSV. The entire process takes under 5 seconds and runs entirely in your browser, so your confidential data never leaves your device.
CSV to Excel Converter — Add Formatting and Formulas
Going the other direction, the CSV to Excel converter transforms a flat text file into a proper .xlsx spreadsheet. This is essential when you need to add formulas, charts, or conditional formatting to data exported from a database or CRM. It's also the cleanest way to make a plain CSV file presentable for a report. Our tool auto-detects column types and preserves special characters, commas within fields, and multi-line cells.
Excel to JSON — For Developers and APIs
For developers, converting Excel to JSON is a daily task — whether you're seeding a database, building a REST API response, or populating a React/Angular component with static data. Our Excel to JSON converter outputs clean, properly nested JSON with your column headers as keys. It supports multiple sheets and handles dates, numbers, and boolean values correctly.
JSON to Excel — When Your Manager Asks for a Spreadsheet
Got JSON from an API or database export? The JSON to Excel converter flattens nested JSON objects into rows and columns, creating a readable .xlsx file in seconds. Perfect for sharing API data with non-technical stakeholders, or converting configuration data into a readable format for review.
AI-Powered Image to CSV & Excel — Extract Tables from Photos
This is the tool that saves the most time. Take a picture of a printed table, a receipt, an invoice, a bus timetable, or even a handwritten attendance register — our AI identifies the rows and columns and converts them into a proper spreadsheet. The Image to CSV and Image to Excel tools use advanced OCR combined with table-detection AI to handle complex layouts that traditional OCR tools miss. For clear, well-lit photos of printed tables, the accuracy is excellent and beats manual data entry every time.
Frequently Asked Questions
Are these file converters completely free to use?
Yes. All file conversion tools on this page are free to use with no account, no file count limits, and no watermarks. Browser-based tools (Excel, CSV, JSON) never send your data to our servers at all.
What Excel formats are supported?
We support both modern .xlsx (Excel 2007+) and legacy .xls (Excel 97-2003) formats. The output is always the standard .xlsx format for maximum compatibility.
How accurate is the AI table extraction from images?
For clear, printed tables in good lighting, accuracy typically exceeds 95%. Blurry images, handwriting, or very complex merged-cell layouts will reduce accuracy. We recommend using clear, well-lit photos for best results.
Is my data kept private?
Browser-based tools (Excel↔CSV, Excel↔JSON) process everything locally — your files never leave your device. AI-powered tools (Image to CSV/Excel) upload your image to secure servers for processing, then delete it immediately after — we never store or log your files.