Improvado
Looker or Tableau: choose by your job
One page, built from the vendor pages cited in the article, read 4 November 2026. Tick each line for the tool and job you are weighing.
1. Name your job first (points each tool earns, from the article)
- One revenue number for finance, sales and marketing: Looker 12, Tableau 12 of 12.
- Move channel reports off Looker Studio: Looker 8, Tableau 12 of 12.
- Analysts explore data from many places: Looker 8, Tableau 9 of 10.
- Dashboards for many clients: Looker 9, Tableau 9 of 10.
- Renew or replace at 300+ users: Looker 11, Tableau 14 of 14.
- A head-to-head trial on BigQuery: Looker 13, Tableau 14 of 14.
- Ask questions in plain language: Looker 6, Tableau 4 of 6.
- Push numbers to people on a schedule: Looker 7, Tableau 8 of 8.
2. What each tool needs before you start
- Looker needs a supported SQL database, such as BigQuery or Cloud SQL.
- A developer user models the data in LookML. Google lists two developer users with each platform.
- Looker (Google Cloud core) runs only in Google's cloud, so it is not an option for customer-hosted servers.
- Tableau needs at least one Creator license in every deployment.
- Tableau Public visualizations are visible to anyone online, so keep client and company data out of it.
- Tableau's pricing grid lists Tableau Agent under Tableau Cloud+.
3. Your data first
- List every source your analysts join by hand. That list decides how much loading work comes first.
- Looker connects to SQL databases, so ad data must reach one before Looker can read it.
- Tableau's connector list marks Google Sheets as deprecated, so check where your reports are fed by hand.
- For Meta, HubSpot or another platform, check each vendor's connector list.
4. Run six tests on one real dashboard
- Set a pass bar first. Record who did each test, the minutes to build, the seconds to load and the bytes scanned.
- Build one metric in both tools, and time it.
- Ask a business user to answer one question without SQL, and in plain language if your edition has it.
- Load a dashboard on your largest table, cold and warm, and note the bytes scanned.
- Change a metric definition, then review and undo it: Git in Looker, the revision history in Tableau.
- Set one alert and one scheduled PDF, and open both on a phone.
- Sign in as two users and check that each sees only their own rows.
- Trial lengths: Looker trial instances are valid for 90 days, one active trial per edition type for each Google Cloud project and region. Tableau offers a free Tableau Cloud trial and Tableau Desktop Free Edition.
5. Six questions for both quotes (the worksheet is section 7)
- What does the first year cost at our user count, by role?
- Which roles or seats do view-only and client users need?
- What does the price rise to in year two and at renewal?
- Which AI features are in this quote, and what do they cost after any promotion?
- What do embedding and external viewers add?
- What does hosting, support and onboarding add?
6. Renewing Tableau? Test Looker before you drop it
- Count your workbooks, their owners and your permission groups.
- Take one workbook. Connect it through Google's Looker and Tableau BI connector on BigQuery, or rebuild it in Looker on another warehouse.
- Model the metrics that workbook uses in LookML.
- Rebuild the workbooks you keep, and retire the rest.
- Reset permissions, then train users role by role.
- Size the move on that first workbook. The article has no measured effort or cost for it.
7. What moves the bill: fill in one column per quote
| Line | Looker quote | Tableau quote |
|---|---|---|
| Users by role (Looker: standard and developer users. Tableau: Creator, Explorer, Viewer) | ||
| View-only and client viewers | ||
| Embedding and external viewers | ||
| AI features, and their cost after any promotion (Looker's Conversational Analytics promotion runs through 31 January 2027) | ||
| Hosting, support and onboarding | ||
| Price in year two and at renewal | ||
| First-year total at our user count |
Every line comes from the article Looker vs Tableau (2026): which one fits your job, which links each vendor page. Neither tool was trialled. Improvado publishes the article and sells neither tool.