Why Google Ads Conversions Do Not Match Your Actual Sales

“Google Ads says we got 40 conversions last month. Sales says we closed 6 deals.” This is one of the most common gaps a business runs into, and it usually is not a mystery once you look at how each number is actually produced.

A conversion is a defined event, not a sale

A Google Ads “conversion” is whatever event you told the platform to count: a form submission, a phone call over a certain length, a click on a phone number, an add-to-cart. None of these are the same thing as a closed sale, and the platform has no way to know whether a form submission ever became a customer.

Common causes of the gap

Multiple conversion actions counting the same event. If a form submission fires both a native Google Ads tag and a GA4 import into Google Ads, the same lead can be counted twice.

Primary vs. secondary conversion actions. Google Ads distinguishes between conversions that count toward bidding and reporting and ones that do not. It is easy to set this up in a way that inflates the headline number without anyone intending to.

Call tracking counting every call, not every qualified call. A tracking number can count a 12-second wrong-number call the same way it counts a real inquiry, unless minimum call duration or keypress conditions are configured.

Attribution window mismatches. Google Ads can credit a conversion that happens up to 30 or 90 days after a click, depending on settings. Your CRM likely does not apply the same window, so month-to-month comparisons will not line up cleanly even when both numbers are accurate.

Lead quality. Not every form submission is a real prospect. Spam, duplicate submissions, and out-of-area inquiries all count as conversions in the platform while contributing nothing to sales.

Sales cycle length. A conversion that happened in March might not close until May. Comparing this month’s Google Ads conversions to this month’s closed deals compares two different cohorts.

If duplicate or inflated conversion counts sound familiar, How Digital Marketing Conversions Get Double Counted goes deeper into the mechanics.

A simple way to check your own numbers

Question	What it tells you
Are there more than one conversion action tracking the same event?	Possible double-counting
What is the attribution window set to?	Whether timing mismatches are expected
Does call tracking have a minimum duration set?	Whether short/wrong-number calls are being counted
Do CRM lead sources match Google Ads’ own reporting?	Whether attribution is being overwritten downstream

What a reconciliation actually looks like

A proper reconciliation does not try to force Google Ads conversions and CRM sales to match exactly — some gap is normal and expected. The goal is to understand the gap: how much of it is timing, how much is lead quality, how much is duplicate tracking, and how much is genuinely unexplained. That last category is the one worth investigating further.

Related reading: Can You Actually Trust Your Marketing Numbers?