Step 1
Upload your file or try with sample data
Drop your CSV here
Drag any CSV and watch the magic happen in seconds.
Supports CSV, TSV, TXT · up to 10GB via chunking
Waiting for upload...
Waiting for upload...
Turn large text files into tidy spreadsheets
Transform up to 10GB CSV, TSV, text files into Excel instantly.
Drop CSV/TSV files, auto-detect the right settings, preview the output, and split giant datasets for reliable Excel downloads.
- Auto delimiter + encoding detection
- Chunked exports up to 1M rows
- Secure handling of your files
Preview Snapshot
data_2025.csv
Customer
Orders
Revenue
Fjord Insights
1,245
$110K
Paxton Labs
978
$83K
Aurora Retail
1,682
$143K
No sign-up • No email • Try it free instantly
Step 2
Preview & fine-tune
| Name | Age | City | Date |
|---|---|---|---|
| John Doe | 25 | New York | 2023-01-15 |
| Jane Smith | 30 | London | 2023-02-20 |
| Bob Johnson | 35 | Tokyo | 2023-03-10 |
| Alice Brown | 28 | Paris | 2023-04-05 |
Step 3
Export clean .xlsx files
Generate a single workbook or get a zipped bundle of split files so Excel stays snappy.
Idle – ready when you are.