I had a client last year who told me their website was "doing great." When I asked how they knew, they said it looked nice. Which, fair enough, it did look nice. But looking nice and doing its job are two completely separate things, and there's a simple way to tell the difference.
Three numbers. That's all you need to check.
Number One: Traffic
Traffic is the count of people visiting your website. You can find this in Google Analytics under "Users" for any time period you choose. Monthly is the most useful window for most businesses.
For a local small business, what counts as good traffic varies wildly depending on your industry and location. A dentist in Santa Cruz might get 300 to 800 monthly visitors and be doing just fine. A restaurant might get more because people are constantly searching for menus and hours. A B2B consulting firm might get less but convert at a higher rate.
The number itself matters less than the direction. If you had 200 visitors in January and 350 in June, something is working. If you had 500 in January and 200 in June, something changed and you should figure out what.
Common reasons for traffic drops: your Google Business Profile got suspended or has incorrect info, a competitor started running ads for your keywords, your site developed a technical issue that hurt your search rankings, or seasonal patterns in your industry.
Common reasons for traffic gains: you published new content, someone linked to your site, your Google Business Profile is optimized and active, or you fixed a technical issue that was holding you back.
Number Two: Conversion Rate
This is the percentage of visitors who take the action you want them to take. Book an appointment. Fill out a contact form. Call you. Sign up for your email list. Whatever the primary goal of your site is.
To calculate it, you need to know two things: how many visitors you got, and how many of them completed the goal. If you had 400 visitors and 12 people booked an appointment through your site, your conversion rate is 3%.
For most local service businesses, a conversion rate between 2% and 5% is typical. Above 5% is strong. Below 2% means your site might not be doing its job, or you're attracting the wrong traffic.
Setting up conversion tracking in Google Analytics takes a little work. You need to define what counts as a conversion, usually a form submission or a click on your phone number, and tell GA4 to track it. If this sounds tedious, it is a little tedious. But it's a one-time setup and it gives you the most important number about your website's performance.
Without conversion tracking, you're guessing. With it, you know.
Number Three: Bounce Rate
We covered this in the analytics basics post, but it bears repeating here because it's the third leg of the stool.
Bounce rate tells you what percentage of visitors leave without engaging. In GA4 terms, you're looking at the inverse metric, Engagement Rate, which measures the percentage of sessions that lasted longer than 10 seconds, had a conversion event, or had two or more page views.
A high bounce rate on your homepage is a red flag. It means people arrive and immediately decide this isn't what they're looking for. That could be a messaging problem, a speed problem, a design problem, or a targeting problem.
A high bounce rate on a blog post is less concerning. People read the post, got their answer, and left. That's fine. They might come back later.
For your key pages, the ones where you want people to take action, aim for an engagement rate above 50%. If it's below that, something on the page isn't working.
How These Three Numbers Work Together
Here's where it gets interesting. These numbers don't exist in isolation. They form a picture.
High traffic, low conversion: lots of people showing up but not taking action. Your site might be attracting the wrong audience, or the path to conversion is unclear. Maybe your call-to-action is buried. Maybe the page is confusing on mobile.
Low traffic, high conversion: your site works well for the people who find it, but not enough people are finding it. This is an SEO or marketing issue, not a website issue.
High traffic, high bounce: people are arriving and leaving. Check your page speed. Check that your content matches the search terms driving traffic. If people search "plumber Santa Cruz" and land on a page about kitchen remodeling in San Jose, they're going to leave.
Low traffic, low conversion, high bounce: the site needs work across the board. But at least you know that now.
Finding These Numbers
Traffic is right on the GA4 home dashboard. Bounce rate (or engagement rate) is under Reports, then Engagement. Conversion rate requires setting up conversion events, which you can do under Admin, then Events, then marking specific events as conversions.
If you don't have Google Analytics set up yet, start there. If you have it but haven't looked in a while, block off fifteen minutes this week. Pull up these three numbers. Write them down. Then check again next month.
You don't need a dashboard with forty charts. You need three numbers and the discipline to look at them regularly. That alone puts you ahead of most small businesses, who are either not tracking anything or tracking everything and understanding nothing.