Tablizer

Convert Excel to RDF Online

Paste an Excel table below, edit it if you need to, and get RDF back. The conversion runs in your browser, so nothing is uploaded, there is no size limit and there is no signup.

From

The only part of this site that uses a server. The address is sent to it so the page can be fetched, because a browser is not allowed to fetch someone else's page itself. Your own files are never involved.

Nothing here is uploaded. The parsing happens on this page.
Edit
Paste or upload something above and it will appear here.
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The output will appear here once there is a table to convert.

What Excel is

An Excel workbook is a zip archive of XML parts describing sheets, cells, formulas, styles and charts. The .xlsx extension is that format; .xls is the older binary one from before 2007.

Finance, operations and anyone who received a file from finance or operations.

What RDF is

RDF in Turtle syntax: subject, predicate, object triples describing each row.

Linked data and semantic web projects.

What changes when you convert Excel to RDF

Only the first sheet is read, and cells are read as the text Excel displays rather than the number underneath. That matters for dates: a cell showing 15/03/2026 arrives as that string, not as a serial number you would then have to decode.

Each row becomes a subject with one predicate per column, under an example.org namespace you will want to change.

What carries over from Excel to RDF

Excel records 4 things about a table that RDF has no way to hold.

Excel distinguishes a number from the text of a number; RDF does not, so every value arrives as text and has to be re-parsed by whatever reads it next.

An empty cell and a missing one are the same thing in RDF, so a null and an empty string in the Excel both come out blank and can no longer be told apart.

RDF has no header row. The column names are repeated as keys on every record instead, which is why the result is bigger on disk than the table it came from.

Anything visual in the Excel - weight, alignment, colour, column widths - has no counterpart in RDF and is dropped. The values are what survives.

The result can be read a record at a time, and appended to by adding to the end of it. That is worth having for a table too large to hold in memory, and it means a RDF file that is cut off part way through still gives you every record before the cut.

A worked example

Three rows of staff data, with an identifier that has a leading zero, a value containing a comma, a value containing quotes and one blank cell. Those are the four places formats disagree, so they are the four places to look.

Excel in
id,name,role,started,hours
007,Halima Yusuf,"Analyst, data",2024-03-15,38.5
012,"Jonah ""Jo"" Pryce",Engineer,2025-11-02,
104,Wei Chen,Manager,2023-06-30,40
RDF out
@prefix ex: <http://example.org/> .

ex:row1
    ex:id "007" ;
    ex:name "Halima Yusuf" ;
    ex:role "Analyst, data" ;
    ex:started "2024-03-15" ;
    ex:hours "38.5" .

ex:row2
    ex:id "012" ;
    ex:name "Jonah \"Jo\" Pryce" ;
    ex:role "Engineer" ;
    ex:started "2025-11-02" ;
    ex:hours "" .

ex:row3
    ex:id "104" ;
    ex:name "Wei Chen" ;
    ex:role "Manager" ;
    ex:started "2023-06-30" ;
    ex:hours "40" .

Questions

How do I convert Excel to RDF?

Paste your Excel into the box above or drop the file onto it. Check the table in the grid, then copy or download the RDF from the output panel. It takes one step and the data never leaves your browser.

Does converting to Excel keep my formulas?

No. A table has values, not formulas. If your source came from Excel in the first place, the formulas were already resolved to their results before they reached this page. Anything that was =SUM(A1:A10) arrives as the number it produced.

Will my numbers still be numbers?

They will read the same, but RDF stores them as text. Anything that sorts or sums the result will need to parse them first, and a leading zero or a currency symbol is the usual place that goes wrong.

Is there a limit on file size?

No. The work happens on your own machine, so the limit is your machine's memory rather than an upload cap. A file with tens of thousands of rows converts in a second or two.

Is my data uploaded anywhere?

No. The parsing and generating are done by JavaScript running on this page. You can watch the network tab while you convert and see that nothing is sent.

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