Excel to RDF Converter

About the Excel to RDF Converter

This powerful Excel to RDF converter transforms spreadsheet data into RDF (Resource Description Framework) for the semantic web. Upload an Excel workbook and generate clean RDF in Turtle, RDF/XML, or JSON-LD format with proper namespaces, datatypes, and resource URIs.

Key Features & Benefits

• Multiple RDF formats: Export your Excel data as Turtle (.ttl), RDF/XML (.rdf), or JSON-LD (.jsonld).
• Configurable namespaces: Set your own base resource namespace and predicate/property namespace for clean URIs.
• Automatic datatype detection: Detects integers, decimals, booleans, dates, and dateTime values and annotates them with the correct xsd: datatype.
• Subject identifier column: Choose which Excel column identifies resources (e.g., ID, URI) or let the tool auto-generate URIs per row.
• Supports multiple sheets: Select which sheet to convert when your Excel file contains several tables.
• Downloadable RDF files: Copy to clipboard or download the generated RDF in your preferred format.

How to Convert Excel to RDF

1. Upload your Excel file: Drag and drop or select an .xlsx or .xls workbook.
2. Pick the sheet: If your file has multiple sheets, choose the sheet you want to convert to RDF.
3. Set header and subject options: Confirm whether the first row is a header and optionally select a column to serve as the subject identifier.
4. Configure RDF settings: Choose the output format (Turtle, RDF/XML, JSON-LD), base namespace, predicate namespace, and resource type IRI.
5. Review the RDF output: The tool builds triples for each row and column, applying appropriate datatypes and URIs.
6. Copy or download: Copy the RDF to your clipboard or download it as a file to import into triple stores or knowledge graphs.

Example: Excel to RDF (Turtle)

Consider an Excel table with columns:

• id
• name
• age
• website

For a row like person-001, John Doe, 28, https://example.com/john, a simplified Turtle snippet might look like:

@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix prop: <http://example.com/property/> .

<http://example.com/resource/person-001>
    rdf:type <http://schema.org/Person> ;
    prop:name "John Doe" ;
    prop:age "28"^^xsd:integer ;
    prop:website <https://example.com/john> .

You can load this RDF into Jena, RDF4J, Blazegraph, or any SPARQL-enabled triple store.

When to Use the Excel to RDF Tool

• Knowledge graph projects: Convert tabular business data into RDF triples for knowledge graphs and linked data applications.
• Data integration: Harmonize Excel data from multiple systems into a standards-based RDF model.
• Open data publishing: Publish government, research, or enterprise data sets as RDF for public reuse.
• Prototyping semantic models: Experiment with ontologies and vocabulary mappings using simple Excel sheets.

FAQ: Excel to RDF

Is the Excel to RDF converter free?

Yes. The Excel to RDF tool is completely free to use and does not require registration.

Which RDF formats are supported?

You can export RDF as Turtle, RDF/XML, or JSON-LD. Choose the format that best matches your tooling and workflows.

How are datatypes assigned?

The converter inspects each cell value to detect numbers, booleans, dates (xsd:date), and dateTime values (xsd:dateTime). Other values are treated as plain strings.

Can I control the subject URIs?

Yes. You can select a specific column (such as an ID or URI column) to build subject IRIs. If you leave it on auto, the tool creates URIs based on the row number.

Does my Excel data leave the browser?

No. All Excel to RDF conversions happen locally in your browser. Your spreadsheets are not uploaded to any remote server, which helps protect sensitive data.