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Cookie Consent Calculator

Model consent rates and the analytics data loss from a cookie banner.

About Cookie Consent Calculator

Under opt-in regimes a substantial share of traffic is never measured, so reported conversions understate reality. The unattributed revenue figure is what makes the gap concrete for reporting purposes. Treating consented traffic as the whole picture leads to systematically wrong channel attribution, because consent rates differ by traffic source.

Formula

Cookie Consent

Tracked visitors = visitors × effective consent rate, which varies by regime

opt-in
No tracking before consent, which is the GDPR position
opt-out
Tracking permitted until refused, giving far higher effective rates

Worked example

With the default values below, Cookie Consent Calculator returns Visitors Tracked of 93,000. Change any input above and every figure here is recalculated in your browser.

Inputs used

Monthly visitorsminimum 0
150,000
Consent rateaccepts 0–100 %
62 %
Regimeone of Opt-in, GDPR style, Opt-out, CCPA style, Implied consent
Opt-in, GDPR style
Conversion rateaccepts 0–100 %
2.4 %
Average order valueminimum 0
65

Results

Visitors Tracked
93,000
Analytics Data Lost
38.00%
Conversions Not Attributed
1,368.0
Revenue Not Attributed
$88,920.00
Effective Consent Rate
62.00%

Step by step

  1. 1Values used
  2. 2Cookie Consent
  3. 3Visitors Tracked= 93,000
  4. 4Analytics Data Lost= 38.00
  5. 5Conversions Not Attributed= 1,368.0
  6. 6Revenue Not Attributed= 88,920.00
  7. 7Effective Consent Rate= 62.00

Assumptions and limits

  • The result is derived only from the 5 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
  • This models data loss only and is not legal advice. Cookie consent requirements vary by jurisdiction and change frequently; obtain qualified legal guidance on your specific obligations.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

This models data loss only and is not legal advice. Cookie consent requirements vary by jurisdiction and change frequently; obtain qualified legal guidance on your specific obligations.

Frequently Asked Questions

How is Cookie Consent calculated?

Tracked visitors = visitors × effective consent rate, which varies by regime Under opt-in regimes a substantial share of traffic is never measured, so reported conversions understate reality. The unattributed revenue figure is what makes the gap concrete for reporting purposes.

Why does Cookie Consent matter?

Treating consented traffic as the whole picture leads to systematically wrong channel attribution, because consent rates differ by traffic source.

What values do I need to enter?

This calculator takes 5 inputs: Monthly visitors, Consent rate, Regime, Conversion rate, Average order value. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.

Related Calculators

Cookie Consent Calculator – Calculate Visitors Tracked