---
title: "Data Loss Calculator — SealMetrics"
description: "Calculate how much revenue is invisible to your current analytics. Consent banners + ad blockers + browser restrictions hide the majority of your traffic."
canonical_url: "https://sealmetrics.com/data-loss-calculator/"
lang: "en"
date_modified: 2020
content_type: "product"
owner: "web"
llm_priority: "useful"
last_verified: "2020"
source: https://sealmetrics.com/data-loss-calculator/
publisher: SealMetrics
---

Data loss calculator

# How much revenue is *invisible* to your analytics?

Cookie consent, ad blockers and browser restrictions hide the majority of your traffic. Enter your numbers — we show exactly what GA4 is missing, and what it costs you every month.

## Your numbers

Three fields. Instant results.

Monthly website visitors

Primary market GermanyFranceNetherlandsSpainItalyUnited KingdomOther EU countryUnited States

Monthly online revenue (EUR)

Loss rates from published research: Advance Metrics, CookieYes, SEOSandwitch, Stape, Google/Deloitte page-speed. No email required.

How much are you not seeing?

Enter your monthly visitors, primary market, and revenue. We will calculate exactly how much data your analytics are missing.

Quick answer

Cookie-based analytics like [GA4](https://sealmetrics.com/vs-ga4/) lose the majority of European eCommerce traffic before it is ever counted. Four cuts stack: 40–60% of visitors reject the consent banner, 20–30% run [ad blockers](https://sealmetrics.com/glossary/ad-blocker-analytics-impact/), Safari’s ITP caps first-party cookies at 7 days, and GA4 and Adobe’s heavy measurement tags load megabytes of JavaScript — so roughly 15% of visitors leave before the pixel even fires. For a German store these compound to about 19% GA4 visibility: four in five sales are invisible in the dashboard used to allocate paid-media budget. This is [data loss in analytics](https://sealmetrics.com/glossary/data-loss-in-analytics/) made concrete.

[SealMetrics](https://sealmetrics.com/product/) measures 100% of the same traffic with a lightweight first-party server-side pixel — no cookies, no consent dependency, no sampling — so revenue in the report matches Shopify. Enter your monthly visitors and revenue above to see the exact amount your current setup hides each month.

## See the gap on *your actual traffic.*

30 minutes. We run your own site through SealMetrics and compare with your current analytics — live.

[Book a demo →](https://sealmetrics.com/demo/)[Start 14-day trial](https://my.sealmetrics.com/register)

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