What row limit should I use for Amazon Seller Central bulk uploads?

Set Deliteful to 9,500 rows per file. Seller Central templates support up to 10,000 rows, and the 500-row buffer accounts for the header row and any platform-side counting variations that can cause uploads to fail at exactly 10,000.

Will my column headers be preserved in every split file?

Yes. The header row from your original file is automatically included at the top of every output file. This is critical for Seller Central uploads, which rely on column names to map your data to the correct template fields.

Can I use this with Seller Central flat file templates I've already filled in?

Yes. Any .xlsx or .xls file works, including Seller Central's own category-specific flat file templates populated with your listing data.

Does splitting affect my ASIN data, pricing, or attribute columns?

No. All cell values are preserved exactly as entered. Formulas resolve to their computed values; no listing data is modified, dropped, or reordered.

Split Excel Inventory Files Into Seller Central-Ready Upload Chunks

Amazon Seller Central bulk upload templates cap at around 10,000 rows per file — a limit that catalog-heavy sellers hit regularly when managing listings across multiple categories or uploading seasonal inventory updates. Deliteful's row-split tool produces numbered, header-complete Excel chunks sized to clear that limit without manual copy-paste.

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Sellers managing catalogs of 15,000, 50,000, or more parent ASINs know the drill: export the master inventory file from your catalog management tool or 3P software, try to upload it to Seller Central, watch it fail or time out, then spend an hour manually splitting the file in Excel. The header row — which Seller Central reads to map your columns to its template fields — has to be in every chunk, or the upload fails. Getting that wrong means re-doing the work.

Deliteful eliminates the manual step. Set rows-per-file to 9,500 (a safe buffer below Seller Central's 10,000-row ceiling), upload your master inventory Excel file, and download a ZIP of sequentially numbered files each with your original column headers intact. Upload each chunk to Seller Central in order. The tool works with any .xlsx or .xls file — including Seller Central's own flat file templates filled with your data.

How it works

1
Create a free Deliteful account
Sign up with Google OAuth — no credit card, takes about 3 clicks.
2
Upload your master inventory Excel file
Accepts .xlsx and .xls — including Seller Central flat file templates.
3
Set rows per file to 9,500
This keeps each chunk safely under Seller Central's 10,000-row upload limit.
4
Upload each chunk to Seller Central
Download the ZIP and submit each numbered file sequentially via Seller Central's bulk upload interface.

Frequently asked questions

What row limit should I use for Amazon Seller Central bulk uploads?: Set Deliteful to 9,500 rows per file. Seller Central templates support up to 10,000 rows, and the 500-row buffer accounts for the header row and any platform-side counting variations that can cause uploads to fail at exactly 10,000.
Will my column headers be preserved in every split file?: Yes. The header row from your original file is automatically included at the top of every output file. This is critical for Seller Central uploads, which rely on column names to map your data to the correct template fields.
Can I use this with Seller Central flat file templates I've already filled in?: Yes. Any .xlsx or .xls file works, including Seller Central's own category-specific flat file templates populated with your listing data.
Does splitting affect my ASIN data, pricing, or attribute columns?: No. All cell values are preserved exactly as entered. Formulas resolve to their computed values; no listing data is modified, dropped, or reordered.

Create your free Deliteful account with Google and split your next inventory file into Seller Central-ready chunks in under a minute.