Free Tool
Cookie Banner Cost Calculator
Without consent, visits often do not show up in cookie-based analytics — a measurement gap, not people abandoning your site. The model estimates unattributed revenue if conversions scale with traffic the same way across measured and unmeasured visits (default 55% unmeasured; 40–70% band on the yearly figure). Popular scripts can still be blocked: think cookie + consent + adblock vs cookieless + adblock, not recovering every dollar.
Cookie Banner Cost Calculator
Model the measurement gap
Labels say unmeasured and unattributed — not money walking out the door. Adjust inputs; outputs update live.
Your Numbers
Total unique visitors per month
Share of visits that never reach your analytics without consent. Default 55%; yearly range uses 40–70%.
What % of all visitors become paying customers? Typical SaaS ~0.5–3%, e-commerce ~1–4%. Use paid conversions, not raw signups.
Average revenue per paying customer attributed to a visit (order value, subscription, etc.)
Unmeasured in cookie analytics
Modeled unattributed revenue / year
$247,500
Range at 40.0%–70.0% visitor data loss (same other inputs): $180,000 – $315,000/year. Not literal profit-and-loss impact — assumes conversions scale with traffic.
Side-by-side (no ratio — compare yourself)
Share your results (preview uses your numbers)
Yearly range: 40.0%–70.0% unmeasured share. Sources below. Databuddy needs no consent cookie; any JS can still be blocked.
Pre-built Scenarios
The numbers across 5 real-world profiles
Modeled unattributed revenue at realistic visitor data loss and visitor-to-paid assumptions — not literal profit-and-loss impact. Your mileage will vary.
Small Blog
Content site with affiliate revenue
Growing Blog
Established content site with courses
Growing SaaS
B2B — conservative visitor-to-paid (many visitors never buy)
Mid-Traffic Site
E-commerce or marketplace
High-Traffic App
Large-scale SaaS or media platform
The Fix
Drop the cookie banner. Keep the insights.
Databuddy is privacy-first analytics with no cookies and no consent banners. Under 30 KB. You get visibility into traffic cookie stacks often miss — cookieless scripts can still be blocked, but you skip consent loss on measurement.
No consent required
No cookies, no banner, no consent gap
Under 30 KB
Lighter than a cookie notice script
Predictable pricing
Starts at $10/mo — compare to modeled gap above
Sources & methodology
Visitor data loss means visits that do not send consent to cookie-based analytics — a measurement gap, not customers who left your site.
Peer-reviewed & government-backed
- Advance Metrics (2024): 1.2M+ interactions — 25.4% accept all; 68.9% close or ignore (no consent / no analytics).
- CNIL / DITP + BIT (USENIX Security 2024): fair design → 33–46% reject; dark patterns → ~4% reject.
- Utz et al. (ACM CCS 2019): 80k+ real visitors — up to 45% reject with fair opt-out; without nudging, <0.1% consent.
- ScienceDirect (2022): ~15% long-term traffic reduction post-GDPR (macro effect).
Industry (large samples, published methodology)
- etracker Cookie Consent Benchmarks (2024): ~60% visit data loss with legally compliant banners.