Workbook Converter
Convert between every spreadsheet format in one place.
One tool, every direction: XLSX, XLS, XLSM, ODS, CSV, TSV, JSON, XML and HTML. Pick your input, pick your output, and batch-convert a folder of files at once with consistent settings applied to all of them.
- Rating
- 4.8(1.1K)
- Monthly uses
- 132K
- Price
- Free
or drag it here
.xlsx, .xls, .xlsm, .ods, .csv, .tsv, .json, .xml, .html · processed locally, never uploaded
Files stay on your device
What it does well
- Batch conversion of up to 100 files in one pass
- Consistent settings applied across the whole batch
- Zip download with the original folder structure preserved
How to use Workbook Converter
- 1
Add one file or a whole batch.
- 2
Choose the target format.
- 3
Adjust the shared conversion settings once — they apply to every file.
- 4
Download individually or as a single zip.
Watch a walkthrough
Common problems and fixes
A file in the batch fails while the others succeed.
Open the error detail next to that row — usually the file is corrupt or password-protected. Run it through Workbook Repair first.
The zip download does not start.
The browser blocked a large blob download. Convert in two smaller batches, or download files individually.
Frequently asked questions
What people say
Our IT team blocked every other online tool because they upload files. This one does not, so workbook converter finally got approved for use on real data.
Exactly what I needed. Workbook Converter used to be a twenty-minute job with a macro I did not trust; now it takes one drag and one click.
The preview before committing is the part that sold me — I could see exactly what workbook converter was going to change before it changed anything.
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Move data between XLSX, CSV, JSON, XML, HTML and PDF without losing formatting, encoding or number precision. Every conversion runs locally in your browser.
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