How visitors are counted
Analytics tools recognize returning visitors with a cookie or, when people are logged in, a user ID. That makes the number an estimate:
- One person using a phone and a laptop counts as two visitors.
- Clearing cookies, private browsing and declining cookie consent make returning visitors look new, or hide them entirely.
Unique visitors vs visits
If one person visits your site three times in a week, that is one unique visitor and three sessions. Comparing the two shows how often people come back.
Unique visitors example
A site has 10,000 sessions in a month from 6,500 users. Some people visit several times: a customer who checks the order status every week counts as one user and four sessions. A person who reads on a phone in the morning and a laptop in the evening can appear as two users. Because the numbers are estimates, compare month to month using the same tool and method.
How to use visitor numbers well
- Track new and returning users to see whether people come back.
- Look at users by channel and landing page.
- Relate users to conversions, not only to the total.
- Use the same measure, such as active users, in every report.
- Explain definitions in your reports, because tools differ.
Unique visitors mistakes
- Treating the number as the exact count of people.
- Comparing figures from different tools.
- Ignoring consent and cookie blocking, which hides some visitors.
- Judging success by visitors rather than by customers.
Unique visitors FAQs
How is it different from sessions?
See sessions. A visitor can have many sessions.
Where can I see it?
In Google Analytics as users. See website analytics and tracking codes.
Why the numbers differ between tools
Each tool defines and counts visitors in its own way, uses different cookies and handles consent differently. Your server logs, a cookie-free analytics tool and Google Analytics can give three different figures for the same month. None is exactly right. Choose one as your reference and use it consistently to see trends, and do not mix the numbers in the same report.