Will the split files work directly as ETL flat-file inputs?

Yes. Each file contains the original header row plus up to your specified number of data rows, in original order. No post-processing is required before feeding them to a load step.

Does the tool preserve data types in output cells?

Output files preserve cell values as stored in the source Excel file. Numeric, date, and text types are maintained. Formulas are not recalculated — the last computed value is used.

How are output files named?

Output files are numbered sequentially and delivered together in a ZIP archive, making it straightforward to load them in order.

Is there a file size limit for uploads?

File size limits depend on your Deliteful plan tier. The free tier supports files sufficient for most standard exports; paid tiers unlock higher limits.

Chunk Excel Files by Row Count Before ETL Load Steps

ETL pipelines that accept flat-file inputs often fail silently or throw memory errors when fed Excel files with more rows than the load step can handle. Deliteful's row-split tool gives you deterministic, header-complete Excel chunks sized to your pipeline's exact tolerance — without writing transformation code.

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A common friction point in ETL work is the gap between how source data arrives (one large Excel file) and how staging tables or load utilities expect it (bounded batches). Database bulk-load tools like SQL Server BCP, Snowflake COPY INTO, and BigQuery load jobs all perform better with predictably sized files. When a vendor delivers a 200,000-row Excel export, the pre-load chunking step is often handled with ad-hoc scripts that get lost or break when column structures change.

Deliteful eliminates that scripting step for Excel sources. Upload the file, specify the row ceiling that matches your staging table's batch commit size or your load utility's limit, and download numbered output files ready for sequential load. The header row is replicated in every chunk automatically. Cell values are preserved; formulas are not evaluated — which is typically the correct behavior for a staging input.

How it works

1
Sign up free with Google
Create your Deliteful account in seconds — no credit card needed.
2
Upload the source Excel file
Accepts .xlsx and .xls from any export source.
3
Enter your batch row limit
Match this to your ETL load step's record ceiling (e.g. 25000).
4
Download and load sequentially
Each output file is numbered and header-complete, ready for your load utility.

Frequently asked questions

Will the split files work directly as ETL flat-file inputs?: Yes. Each file contains the original header row plus up to your specified number of data rows, in original order. No post-processing is required before feeding them to a load step.
Does the tool preserve data types in output cells?: Output files preserve cell values as stored in the source Excel file. Numeric, date, and text types are maintained. Formulas are not recalculated — the last computed value is used.
How are output files named?: Output files are numbered sequentially and delivered together in a ZIP archive, making it straightforward to load them in order.
Is there a file size limit for uploads?: File size limits depend on your Deliteful plan tier. The free tier supports files sufficient for most standard exports; paid tiers unlock higher limits.

Create your free Deliteful account with Google and turn your next monolithic Excel export into load-ready ETL chunks today.