Moving millions of rows between tools shouldn't require writing a script or manually splitting a file into pieces yourself. It should be as easy as loading the data once and clicking a button repeatedly until everything has moved to its destination.
Million by Million Rows Copier makes copying millions of rows exactly that simple. Paste your data with Ctrl+V or load a file in any of 33 supported formats, click Start Copying Out, then click Copy Next Chunk each time you're ready for the next million-row piece, pasting it into your destination as you go.
Every chunk includes the header row on the clipboard automatically, and is saved to disk in your chosen format the moment it's copied, CSV, XLSX, JSON, SQL, TSV, or XML, so you end up with both a clipboard paste and a permanent file record without any extra steps.
Because the app stores data in a local SQLite database rather than memory, it stays easy to use and responsive even with datasets up to 50,000,000 rows, no lag, no freezing, no waiting for the interface to catch up while you work.
Chunk size defaults to 1,000,000 rows but adjusts anywhere from 1 to 10,000,000, so easily matching the app's output to whatever limit your destination tool has is just a single setting away.
Everything runs locally on your PC, aside from a one-time license check. Loading, chunking, and exporting all happen offline, with your data never uploaded anywhere. Data analysts and engineers moving large extracts between tools, database administrators handing off query results, finance and accounting teams transferring big ledgers, operations and reporting staff assembling data from many sources, and anyone who has ever tried to paste more rows into Excel than it was willing to accept, all use the same underlying workflow. Virtual rendering keeps the loaded-data view smooth even at the upper end of the app's capacity, and every worker thread runs its own SQLite connection in WAL mode, so nothing here depends on your PC having an unusual amount of memory to spare.
- Install Million by Million Rows Copier on your Windows PC.
- Paste your data with Ctrl+V or load a file.
- Click Start Copying Out to lock the dataset in place.
- Click Copy Next Chunk to build the first chunk.
- Paste that chunk into your destination.
- Click Copy Next Chunk again for the next piece.
- Repeat until the entire dataset has been copied.
- Check your output folder for the auto-saved chunk files.
- Use Re-copy Current Chunk if your clipboard gets overwritten mid-paste.
- Click Open Output Folder to review everything you've saved so far.
- Copies millions of rows with a simple, repeatable click workflow
- Header row included automatically in every chunk
- Auto-saves each chunk to disk in your chosen format
- SQLite-backed storage stays responsive at any scale
- Chunk size adjustable from 1 to 10,000,000 rows
- Handles datasets up to 50,000,000 rows in one session
- Runs fully offline aside from a one-time license check
- One-time purchase for Windows, with Gumroad license activation
- Choose your own output folder, or use the default under My Documents
- Works with files on local drives, external drives, and network shares
Is this difficult to set up for a first-time user?
No, the workflow is load once, click Start Copying Out, then click Copy Next Chunk repeatedly, with sensible defaults for chunk size and output folder already set.
Do I need to manually save each chunk myself?
No, each chunk is saved to disk automatically in your chosen formats the moment it's copied to the clipboard.
What if I want a chunk size smaller than a million?
Chunk size can be set anywhere from 1 to 10,000,000 rows, so you can choose whatever size fits your actual need.
Will the app slow down as my dataset grows larger?
No, data is stored in a local SQLite database rather than memory, so the app stays responsive even at the upper end of its 50,000,000-row capacity.
Does this work on both Windows 10 and Windows 11?
Yes, Million by Million Rows Copier is built and tested for both Windows 10 and Windows 11.
Is my data safe when using this tool?
Yes, all processing happens locally on your PC; no data is ever uploaded, so proprietary or sensitive records stay fully under your control.
Where do saved chunks and exports go by default?
A default output folder under My Documents is set automatically at startup, though you can choose a different folder before loading begins.
Can I use this on files stored on an external or network drive?
Yes, files on local drives, external drives, or mapped network shares all load the same as any local file.
What happens if the app is closed partway through a session?
Each chunk is saved to disk automatically the moment it's copied, so a closed app or crash never loses more than the chunk that was in progress.
Is there a trial version available before buying?
Check the product page on turbo-soft.com for current trial availability and details.
Ready to copy millions of rows easily, fully offline?