Understated traffic
Your real audience is larger than your reports show.
Free tool
Cookie consent data loss calculator
When visitors decline cookies, cookie-based analytics cannot see them. Enter your traffic and your consent rate to estimate how many visitors are missing from your numbers.
Visitors your cookie-based tool sees
Visitors missing every month
Visitors missing per year
How consent affects your analytics data
With cookie-based analytics, only visitors who click "accept" in your cookie banner are measured. Everyone who declines or ignores the banner is invisible to your reports.
Visitors you see = real visitors × consent rate
Example: with 20,000 real monthly visitors and a 60% consent rate, your analytics shows only 12,000 visitors, so 8,000 are missing every month.
What is a typical consent rate?
Consent rates vary widely depending on country, audience, banner design and device. Many websites see acceptance somewhere between 40% and 80%. Privacy-conscious audiences, such as technical or German-speaking visitors, often decline more.
Check your own consent management tool for your real acceptance rate and enter it above.
Why missing data matters
Biased insights
Visitors who accept cookies are not identical to those who decline, so your data can mislead.
Wrong marketing decisions
Campaign results and conversion rates are harder to trust.
Wasted effort
You maintain consent tools and logs just to collect partial data.
The cookieless alternative
Cookieless analytics such as Noralytic does not need consent for measuring traffic, so every page view counts. You get complete traffic numbers and can often remove a banner that existed only for analytics. Read how in our guide to web analytics without a cookie banner.
Frequently asked questions
How much data do I lose with a cookie banner?
It equals the share of visitors who decline or ignore the banner. With a 60% consent rate you lose about 40% of your visitors in cookie-based analytics.
Is the calculator accurate?
It is an estimate based on the numbers you enter. Your real consent rate comes from your consent management tool.
Does cookieless analytics fix this?
Yes. Because it does not depend on consent, every page view is counted, although it cannot identify returning visitors across days.
Keep reading
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