Attribution & Conversion Counting

Click-Through Conversions vs 1-Day Click Attribution: Category vs Setting

In short: These are not two competing options at the same level - click-through conversions is the umbrella category for any conversion credited to a prior click, and 1-day click is one specific window setting inside that category. Every 1-day click conversion is a click-through conversion, but a click-through conversion can just as easily be measured under a 7-day or 28-day window instead. The question worth asking is not click-through versus 1-day, but which window your click-through reporting should actually run on. Before comparing conversion numbers across accounts or campaigns, check whether they mean click-through at all, and if so, under which window.

By the AdFlint research team · Fact-checked against current Google and Meta platform behavior · Last reviewed July 2026

Click-Through Conversions

Counts conversions from people who clicked your ad first, credited back to that click within the campaign's click attribution window.

The stricter of the two counting paths: a recorded click ties the person to the ad, then any conversion inside the click window is credited back to it. These are the numbers most advertisers optimize on, and platform bidding systems lean on them heavily. The subtlety is that a click conversion is not proof of causation either, it just documents a much stronger interaction than an impression.

Full definition

1-Day Click Attribution

Counts a conversion only if it happens within 24 hours of the user clicking the ad, measured from the click itself.

The window opens at the click and closes 24 hours later; anything after that is invisible to the campaign. Advertisers pick it for impulse purchases, app installs, or when they want reported numbers to stay close to same-session behavior. On Meta it is the tightest setting available. The mistake is comparing a 1-day-click campaign against a 7-day-click one and concluding the creative performed worse, when only the counting rule changed.

Full definition

Side by side.

The differences that actually change what happens in your account.

	Click-Through Conversions	1-Day Click Attribution
What it actually is	The category label for any conversion tied to a prior click.	One specific window setting - 24 hours - inside that category.
What varies within it	The window length itself: 1-day, 7-day, 28-day, or others.	Nothing - the duration is fixed by the setting's own name.
What stays constant regardless of window	A real click must exist before any credit is given.	Same requirement, just under the tightest possible time limit.
Where you'd see it in a report	The metric group or column header, before you drill into window details.	The specific attribution-setting breakdown feeding that column.
Strength of evidence relative to the category	Ranges from strong to strongest depending on which window is active.	The strongest variant, since the short gap leaves little room for other causes.
Failure mode	Assuming a report labeled just 'conversions' means click-through under some particular window, without checking.	Assuming 1-day is the account's default window when it might actually be 7-day or wider.

What actually separates them.

Click-through conversions is the category name for any conversion credited to a click, while 1-day click is one specific window setting chosen within that category - they are not two options at the same level.

Every conversion reported under 1-day click is also a click-through conversion, but not every click-through conversion is a 1-day click, since the same category can be measured under 7-day, 28-day, or other windows.

Changing the window from 1-day to something longer does not stop the numbers from being click-through conversions, it only changes how far back the click can sit and still qualify.

"Click-through conversions" on its own says nothing about causal strength; 1-day click is the strongest variant of it specifically because the short gap between click and conversion leaves little room for something else to have caused the purchase.

A dashboard that just says "conversions" without naming the window is usually reporting whichever click-through setting is active for that ad set, which may or may not be 1-day, so the underlying window has to be checked before comparing numbers across accounts.

Which one should you use?

Use Click-Through Conversions when

You are comparing click-based performance across campaigns that use different window lengths and need the umbrella metric before drilling into each one's setting.
You are auditing an account and need to confirm what a report's "conversions" column actually includes before trusting the number.
You are deciding which click window to set and want to understand what stays true no matter which one you pick.
You are building a dashboard that separates click-based conversions from view-based ones, across campaigns using different windows.
You want a term for conversions that came through an actual click, as opposed to view-through ones, without committing to a specific day count yet.

Use 1-Day Click Attribution when

You are selling something people decide on in minutes, not days.
You want a report that finalizes quickly instead of revising for a week or a month.
You are running app installs or signups judged on same-session action.
You are testing creative and need a fast read to iterate on.
You are running a short-lived offer where nothing beyond a day is relevant to measure.

Common questions.

Is 1-day click a type of click-through conversion, or something separate?

It is a specific window setting inside the broader click-through conversion category. Every 1-day click conversion is also a click-through conversion - it is just measured with the tightest window the category allows.

My report just says 'conversions' - is that the same as click-through conversions?

Not necessarily. Check whether the report is blending click and view-through numbers together or showing click-through only, and if it is click-only, check which window - 1-day, 7-day, or something wider - is actually active, since that changes the count.

If I switch an account's default window from 7-day to 1-day, do I lose click-through data?

Historical reporting stays as it was recorded. Going forward, expect the count to be equal to or lower under the tighter window, since some real click-through conversions happen after 24 hours and would no longer qualify under the new setting.

Or stop choosing between them.

AdFlint picks the setting, writes the ads, and keeps optimizing inside the Google and Meta accounts you already own.

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