Most small businesses track too many digital marketing metrics and act on too few. A dashboard with forty numbers feels thorough. In practice the owner looks at traffic, sees it went up, and moves on, while the number that would have changed a decision sits on page three. On our own client reports the headline is short: leads, cost per lead, and where the leads came from. For California Employer Attorney, that means 532 tracked leads between September 2025 and August 2026, split into 363 form submissions and 169 phone-call leads. That split alone told us that a report counting only forms would have missed about a third of the results.
Key Takeaways
- A metric, in simple words, is a number you track over time so you can compare one period with another. A KPI is the handful of metrics you have agreed to judge the business on.
- For most service businesses the KPIs are leads, cost per lead and lead source. Revenue per customer and return on ad spend come next, once you can connect leads to sales.
- Traffic, impressions and followers are diagnostics. They explain a change in leads; they are rarely the goal.
- Use the platform's own definitions. GA4, Search Console and Google Ads each publish exactly how they count.
- Track calls as well as forms, or every cost per lead you calculate will be too high.
The metrics we track, with formulas
These are the digital marketing metrics formulas we use in client reports. You can copy the table into a spreadsheet as a basic digital marketing metrics template.
| Metric | Formula | What it tells you | Where to find it |
|---|---|---|---|
| Leads | Forms + qualified calls + bookings | Whether marketing is producing work | GA4 key events, call tracking, Google Ads |
| Cost per lead | Spend ÷ leads | What each enquiry costs you | Google Ads, Meta, your own spend sheet |
| Conversion rate | Conversions ÷ visits (or clicks) | How well a page or ad turns interest into action | GA4, Google Ads |
| Click-through rate | Clicks ÷ impressions | Whether your listing or ad earns the click | Search Console, Google Ads |
| Return on ad spend | Revenue from ads ÷ ad spend | Whether ads pay for themselves | Google Ads with conversion values |
| Customer acquisition cost | All marketing and sales cost ÷ new customers | The full price of winning a customer | Accounting plus CRM |
| Customer lifetime value | Average sale × purchases per year × years kept | How much you can afford to pay for a customer | Sales records |
| Engagement rate | Engaged sessions ÷ sessions | Whether visitors stay and act | GA4 |
What is a metric, in simple words?
A metric is a count or ratio you measure the same way every month, so a change means something. "Website visits" is a metric. "Website visits from Google in Charlotte to the water heater page" is a more useful one. A KPI, key performance indicator, is a metric you have agreed in advance to be judged on. Keep that list short, five at most, or nobody remembers it.
Website metrics: read the definition before the number
GA4 changed how engagement is counted, and a lot of old advice about bounce rate no longer applies. In GA4 an engaged session is one that lasts longer than 10 seconds, has a key event, or has two or more page or screen views. Bounce rate is simply the inverse:
The bounce rate is the percentage of sessions that were not engaged.
Google Analytics Help, Engagement rate and bounce rate
So a contact page where people read the phone number and call within eight seconds can show a high bounce rate and still be doing its job. That is why we tie website metrics to key events. A phone tap, an email click and a completed quote form are the three we set up on almost every small business site, and they turn a vague engagement figure into a count of people who tried to reach you.
Search metrics: impressions, clicks and position
Search Console defines an impression as how often someone saw a link to your site on Google, and click-through rate as clicks divided by impressions. Average position is a relative ranking where 1 is the top. These three move together in a way that is easy to misread: when a page starts appearing for more searches, impressions jump, average position can get worse, and click-through rate falls, even though the page is gaining ground.
We saw that pattern in reverse for Charleston Shark Teeth Hunting, where in the first month after the new site launched (June to July 2026) impressions rose from 1,623 to 5,018 while average position improved from 38 to 14. Read the three together, and read them by page and by query, never as a site-wide average alone.
Paid advertising metrics
For Google Ads we report cost per lead first, then conversion rate and click-through rate as the reasons behind it. Cost per click matters only in context. A higher cost per click on a search that converts at twice the rate is a good trade, and our guide to why cost per click gets too high covers how to tell the difference.
Return on ad spend needs conversion values, which most service businesses do not have on day one. Google defines a target ROAS as the average conversion value you want for each dollar spent on ads (Google Ads Help). If you cannot attach a value to a lead yet, stay on cost per lead until you can. For a tour operator with online bookings it is the natural headline; for a law firm with a long intake process it often is not.
Customer value metrics
Customer lifetime value is the number that tells you how much you can afford to pay for a lead. A house painter whose customers come back every five years and a cleaning company whose customers pay monthly can live with very different costs per lead. You do not need a precise figure. A rough average sale, how often a customer buys, and how long they usually stay are enough to set a ceiling on acquisition cost.
Digital marketing metrics examples by channel
- Google Ads: the search terms that turned into calls and forms come first, then what each of those leads cost.
- SEO: organic leads, impressions and clicks by page, Google Business Profile calls.
- Social media: clicks to the site and messages received, ahead of reach and followers.
- Email: click rate and replies. Open rates are inflated by mail apps that load images automatically for privacy reasons, so we treat them as a rough signal.
- Website: key events per page, form completion rate, page speed on mobile.
Search results also throw up questions like what the seven areas or four pillars of digital marketing are. Those frameworks describe channels. They are less useful for measurement than a short list of the metrics each channel should move.
How often to look at each number
Checking every metric daily is how owners talk themselves into bad changes. A new Google Ads account needs a weekly look at search terms and leads for its first two or three months, because waste shows up fast and is cheap to fix. Cost per lead is better judged monthly; a single week with two leads instead of five usually means nothing. SEO numbers move slower still. We compare Search Console data month on month and quarter on quarter, and we wait for at least a few weeks after a page change before deciding it worked or failed. Customer lifetime value we revisit once or twice a year, when the sales records have something new to say.
The rule of thumb we give clients: the further a metric is from revenue, the less often you need to look at it.
What we leave off the report
Total followers, time on page across the whole site, and raw traffic without a source all tend to make the report longer without changing a decision. We still collect them and look when a lead number moves. They just do not get the top of the page. If you would like the same kind of report on your own marketing, our paid ads team builds it from your accounts in the first month, or you can ask us to look at what you track now.
Frequently Asked Questions
What is a metric in simple words?
A metric is a number you measure the same way over time, such as monthly website visits or cost per lead, so you can compare one period with another. A KPI is one of the few metrics you have agreed to judge the business on.
Which digital marketing metrics should a small business track first?
Leads, cost per lead and lead source. Make sure calls are counted alongside forms. Once you can link leads to sales, add revenue per customer and return on ad spend. Traffic, impressions and followers are useful for diagnosis but rarely the goal.
What are the five performance metrics we report most?
In our client reports the five that appear most are leads, cost per lead, conversion rate, click-through rate and, where conversion values exist, return on ad spend. Customer lifetime value sits behind them as the ceiling on what a lead is worth.
How do you calculate conversion rate?
Divide conversions by visits, or by clicks for an ad. If a landing page had 400 visits and 20 completed quote forms, its conversion rate is 5%. Count the same kind of conversion every month or the trend means nothing.
What is the difference between ROAS and ROI?
Return on ad spend divides revenue from ads by ad spend only. Return on investment compares profit with the full cost, including the work, the software and the cost of delivering the job. ROAS can look healthy while ROI is negative if margins are thin.
Why is my bounce rate high in GA4?
In GA4 bounce rate is the share of sessions that were not engaged: under 10 seconds, no key event and only one page view. A contact page where visitors call quickly can show a high bounce rate and still work, so track phone taps and form submissions as key events.
