Tableau, unbundled.

Tableau workbooks, data sources, extracts, calculations and user filters — read, translated into open specifications and regenerated natively on your chosen BI platform.

Moving to Power BI? See our dedicated page on Tableau to Power BI migration.

Tableau estates spread fast: a workbook per question, an extract per workbook, and calculated fields copied from one sheet to the next. The logic that matters is scattered across hundreds of .twb files. We read all of it, so nothing has to be rebuilt by eye.

What we read

  • Workbooks — worksheets, dashboards, stories and their layout.
  • Data sources — published and embedded, including joins, relationships and blends.
  • Extracts — what each extract contains and how often it refreshes.
  • Calculated fields — row-level and aggregate calculations, LOD expressions and table calculations.
  • Parameters, sets and groups, and the calculations that depend on them.
  • Actions — filter, highlight and URL actions between sheets.
  • User filters and permissions — including USERNAME() and ISMEMBEROF() logic.
  • Tableau Prep flows — the preparation steps before the data source.
  • Usage — view counts, so stale workbooks can be retired first.

How it translates

Tableau Open specification On the target (e.g. Power BI)
Data source SQL model Table in a shared semantic model
Extract SQL model (materialised) Import-mode or warehouse table
Prep flow SQL, Airflow and Python Warehouse pipeline or Power Query
Calculated field / LOD Metric definition (YAML) DAX measure
Table calculation Metric definition (YAML) DAX window function or visual calculation
Parameter Parameter definition Field or what-if parameter
Worksheet and dashboard Dashboard definition (JSON) Report visuals and pages
User filter Access policy (YAML) Row-level security role

Where the care goes

  • LOD expressionsFIXED, INCLUDE and EXCLUDE become explicit filter-context logic, and each one is parity-tested.
  • Table calculations — addressing and partitioning set on each sheet are made explicit in the target.
  • Duplicated data sources — near-identical extracts are consolidated into shared models.
  • Blends — secondary data sources become real relationships.

Moving to Tableau

Tableau is a target as well. From open specifications, our automated migration tool can generate Tableau data sources and workbooks.

Migration service

Tableau to Power BI migration

The dedicated page for the route we're asked about most.

Tableau to Power BI
Migration guide

Tableau calculations to DAX

LOD expressions, table calculations and parameters, pattern by pattern.

Read the guide
Service

Estate assessment

Inventory every workbook and data source, and see which ones are still viewed.

Read more

Show us your estate.

A read-only metadata export is enough to start. No platform access required, mutual NDA as standard.