To improve conversion rate, count the right action first, then fix the one step where visitors leave. The order is simple: define the conversion, calculate the rate, measure it, find the leak, and test one change. Each step uses a free Google report; if few visitors arrive, read why no one is visiting your website first.
What counts as a conversion on a business website
A conversion is a visit that ends in a phone call, a quote form or a booking. Google Analytics defines a key event as an action that is particularly important to the success of your business. Write down your two or three, because a rate is only as honest as the thing you count.
One owner reviewing a marketing company on Trustpilot wrote this.
"I was getting ALOT of clicks and no calls, meaning I paid over 1000$ in 3 days that they were managing my account. I was forced to close my account down on Google because of these people!"
How to calculate conversion rate
Divide your conversions by your visitors or interactions in the same time period, then multiply by 100. Google Ads Help gives the example: 50 conversions from 1,000 interactions is a 5% conversion rate. Pick one date range and use it for every comparison.
Then split the rate by page and by traffic source. Say your site has 1,000 visitors and 30 inquiries. That reads as 3%, but a service page with 400 visitors and 2 inquiries is 0.5%. The site-wide number hides that page, and the example is made up to show the math.
An owner reviewing a marketing company on Trustpilot described what a weak rate costs. "Nearly 5 months and I get only 1 lead!! The only 'input' I got from my sales rep was 'spend more money'."
Measure conversions in GA4 with key events and call tracking
GA4 now calls the actions you care about key events. Google explains that you mark an existing event with the star icon in Admin, under Data display and Events. Google says Google Ads conversions and key events are counted separately, so expect the two reports to differ.
My guide to local SEO metrics that matter covers what to read next. Set up these three:
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Form submissions: count the thank-you page view or the form event as a key event.
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Phone calls: track clicks on the tel: link as an event, then mark it as a key event.
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Call tracking: Google Ads can count a call as a conversion when it lasts longer than a minimum length you set.
Find the leak before you change anything
Most conversion advice is a list of 14 or 20 tactics. Skip the list and find the leak, the single step where visitors leave. GA4 Funnel exploration shows how well visitors succeed or fail at each step.
Check which landing page loses people, then watch a heatmap or a few session recordings of it. Last, ask customers how they found you, and put that question on your form and phone script. One r/smallbusiness owner put it this way.
"You'd need to ask every customer how they found you."
How to A/B test one change without hurting search
Change one thing at a time, so you know what caused the result. Google's guide to A/B testing in Search sets the ground rules, and they are listed below.
What to test in the words is covered in the copy section below. Google Optimize shut down on September 30, 2023, so skip guides that still recommend it. Google's rules:
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Show Googlebot the same page a visitor would see. Cloaking breaks Google's rules.
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Use rel="canonical" on each variation, pointing at the original page.
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Send visitors to a variation with a 302 temporary redirect, not a 301.
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Run the test only as long as needed to reach a reliable conclusion, then remove the test code.
Write website copy that converts visitors into calls
Most service homepages open with "Welcome to our website." That line tells a visitor nothing. Open with the result they came for, then explain how you deliver it.
Illustrative weak line: "Welcome to Smith Plumbing, family owned since 1998." Illustrative strong line: "Burst pipe? We can be at your door today." The second names the problem and the result.
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Lead with the outcome the visitor wants, then your approach, then how to reach you.
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Put one clear promise above the fold, in a sentence a 12-year-old could repeat.
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Keep one primary call to action, and use the same words every time it appears.
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Swap adjectives for specifics, like "we text you a photo when the job is done."
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Name the doubt the visitor already has, such as price or reliability, and answer it near the button.
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Place a real review beside the call to action, not on a separate page.
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Write headings that make sense on their own, because Nielsen Norman Group found most people scan web pages.
Fix the form that is blocking conversions
A contact form that fails on a phone costs you inquiries, and the owner rarely tests it. Check it on your own phone this week.
When the form is part of a site rebuild, Spearleaf's web design work counts it as a key event from day one. Nielsen Norman Group says to keep forms short, with one or two optional fields at most, labeled optional.
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Ask for as little as possible, per web.dev's form guidance.
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Add autocomplete values and use the input type that opens the right mobile keyboard.
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Show specific error messages inline, and keep what the visitor already typed.
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Keep each label close to its field.
Treat page speed as a conversion check
Slow pages can lose visitors before the form even loads, so check speed on the pages that convert, not the whole site. Web.dev defines good Core Web Vitals at the 75th percentile of page loads. LCP is within 2.5 seconds, INP is 200 milliseconds or less, and CLS is 0.1 or less.
Web.dev's speed case studies include Rakuten 24, which reported a higher conversion rate after Core Web Vitals work. That is one large store, not a rule for your site. Treat speed as a leak check and read the Core Web Vitals report by mobile and desktop.
Earn trust with proof you are allowed to show
Visitors want a reason to believe you before they call. Show real reviews, a real address and phone number, and plain descriptions of what happens after they reach out. The FTC's reviews and testimonials rule makes businesses liable for fake reviews, so use only ones customers wrote.
Skip countdown timers and invented scarcity. They read as pressure, and a visitor who feels pushed leaves.
Judge conversions by booked jobs instead of the rate
A rate can rise while revenue falls. One owner reviewing a marketing company on Trustpilot wrote the problem.
"Once we started getting calls it was for things that we did not service, or was not anywhere near our location."
So judge each change by booked jobs or revenue by source, not the percentage alone. Another r/smallbusiness owner said this.
"We don't use profit as a measure of success of marketing, we use sales."
Review the numbers every month and re-baseline after a redesign.
Get a website built to count every call and form
Spearleaf builds websites, and I deliver the work myself. If you want one built with calls, forms and key events counted from day one, start with the page below.
- Next step: landing page best practices.
- Start here: why is no one visiting my website.
- How to read it: local SEO metrics that matter.