Looker Studio marketing dashboard: what to build and what to leave out

Aug 18
3 min read

Updated: 2 days ago

Introduction

Looker Studio is free, connects to most of what a small business already uses, and refreshes itself. That makes it the practical centre of small-business reporting.

It is also easy to build something impressive that nobody opens. The constraint is not the tool — it is deciding what belongs on the page.

1. A Looker Studio marketing dashboard needs the right sources

Three connections cover most needs.

Google Sheets is the most important and the least obvious. Anything that cannot connect directly — point-of-sale exports, your customer list, margin data — goes into a sheet, and Looker Studio reads it as a live source. This is how profit data reaches a dashboard.

Google Analytics supplies site behaviour and conversions.

Google Ads, and any other ad platform with a connector, supplies spend.

The gap worth knowing about: Meta has no native connector, so its data either arrives through a third-party connector or via a periodic export into a sheet.

2. Build the customer list into a sheet first

The dashboard is only as good as its inputs, and the input that matters most is a complete customer record: date, source, whether they bought, and value.

Keep it in Sheets, filled in for every customer regardless of how they arrived. That single sheet is what makes acquisition cost, lifetime value and repeat rate calculable.

Without it you will build a traffic dashboard, which is the most common outcome and the least useful.

3. Four charts, not forty

Resist the urge to visualise everything. Four things earn a place.

Cost per customer, by channel and over time. The efficiency question. Customer lifetime value, margin-adjusted. The value question, sitting next to the one above. New versus returning customers. Whether retention is working. Revenue per customer. Whether transaction value is moving.

Put the first two side by side. That pairing answers most spending decisions on sight, which is the entire point.

4. Leave the vanity metrics in the platforms

Impressions, reach, followers and engagement rate do not belong on a decision dashboard. They can rise while the business gets worse.

They are not useless — a collapse in reach helps explain a fall in sales — but they belong in the platform's own reporting, consulted when diagnosing something specific. On the main page they crowd out what matters and give a comforting impression of progress.

5. Keep the construction simple

Elaborate dashboards break and nobody can fix them.

Prefer calculated fields in the sheet over complex ones in Looker Studio, so the logic is visible and editable by anyone. Use one page if you can, two at most. Name every chart plainly.

Add a text box recording where each number comes from and when the underlying data updates. Six months later that note is what makes the dashboard maintainable by someone else.

6. Set the default date range deliberately

The default range shapes every conversation people have with the dashboard.

A month is usually right for reviewing, with the ability to compare against the previous period. Very short defaults invite reacting to noise; very long ones hide recent changes.

Include the comparison, not just the current figure. A number without a comparison rarely leads to a decision.

7. Give it an owner and a routine

A dashboard nobody is responsible for goes stale, and a stale dashboard is worse than none because people act on old numbers.

One named person maintains it. One recurring slot each week looks at it and writes down what moved and why. Anything requiring manual input — a sales export, margin figures — becomes a documented step with a frequency.

That routine is what turns the dashboard from a display into a management tool.

Conclusion

Connect Sheets, Analytics and your ad accounts, and get a complete customer list into a sheet before building anything.

Put four charts on one page with cost per customer beside lifetime value, leave vanity metrics in the platforms, keep the logic simple and documented, include period comparisons, and give it one owner with a weekly slot. The tool is free; the discipline is what costs something.