Shuffle Excel Files Online
Randomly shuffle the row order of Excel files directly in your browser. Useful for randomising data before sampling or ML train/test splits.
About this tool
Randomly shuffle the row order of a Excel file in one click. Drop the file, click Shuffle, and download a new file with rows in a random order. Useful before train/test splitting for machine learning, random sampling, or removing any ordering bias in your data. Your data never leaves your device.
Frequently Asked Questions
Does shuffling a Excel file change the data in any way?
No. Only the row order changes. All column values, data types, and column names remain exactly the same. Shuffling is a purely positional operation.
Is the shuffle reproducible?
No — each run produces a different random order. Each shuffle uses a non-deterministic random seed. For a reproducible shuffle, use the SQL Query tool with ORDER BY md5(CAST(rowid AS VARCHAR)) or a similar hash-based ordering.
Why would I shuffle a Excel file?
The most common reason is preparing data for machine learning — shuffling ensures that train and test splits are random rather than ordered by time, ID, or any other latent pattern in the original file.
Is my data private?
Yes — completely. Your file is never uploaded to any server. Everything runs locally in your browser using WebAssembly — processing happens entirely inside your tab. Once you close the tab, nothing is retained.
What is the maximum file size?
The free limit is 50 MB. For larger files, performance depends on your device's available memory — most modern machines handle 500 MB to 1 GB comfortably.
Related Tools
Add Calculated Column to Excel Files Online
Add a new column to Excel files computed from an arithmetic expression over existing columns. No formulas, no code — just point and click.
Extract JSON Column from Excel Files Online
Extract values from a JSON-encoded column in Excel files into a new flat column using a JSON path expression. Runs in your browser.
Calculate Date Difference in Excel Files Online
Calculate the difference between two date or timestamp columns in Excel files directly in your browser. Output in days, months, years, hours, minutes, or seconds — no upload required.
Normalize Columns in Excel Files Online
Normalize numeric columns in Excel files using min-max scaling (0–1) or z-score standardisation (mean=0, std=1). Adds new columns alongside the originals — no upload required.
Rank Rows in Excel Files Online
Add a rank column to Excel files based on any column's values. Choose RANK, DENSE RANK, or ROW NUMBER, with optional partitioning — runs entirely in your browser.