Attribution & Conversion Counting

1-Day Click Attribution vs 7-Day Click Attribution: Picking Your Window

In short: Both settings credit a conversion back to a click on your ad - the only thing that changes is how long that clock runs before the door closes. A 1-day window only counts people who convert within 24 hours of clicking, while a 7-day window gives the same click a full week to turn into a sale. Because every 24-hour conversion also falls inside a 7-day window, the wider setting can only match or beat the narrower one on volume for identical traffic, never lose to it. Pick the window that matches how long your buyers actually take to decide, not the one that makes the report look best fastest.

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

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

7-Day Click Attribution

Counts a conversion that happens within seven days of a click on the ad, credited back to the day of the click.

Meta's default click window, and the reason reported results for recent days keep rising: conversions are attributed to the date of the click, not the date of the purchase, so yesterday's numbers are still filling in a week later. Use it when the buying decision takes days rather than minutes. The common error is judging a campaign's first few days before the window has closed.

Full definition

Side by side.

The differences that actually change what happens in your account.

 1-Day Click Attribution7-Day Click Attribution
How long the window stays open24 hours from the click, then it is closed for good.Seven full days from the click before it stops accepting credit.
When reported numbers stop movingMostly settled by the next morning.Keeps climbing for a week as late conversions get credited back to their click date.
What kind of buying behavior it fitsImpulse purchases, app installs, same-session decisions.Purchases people research, leave, and come back to finish.
How soon you can judge a testAlmost immediately - yesterday's number is close to final today.Not fairly until the window has actually closed, about a week out.
Effect on what the algorithm chasesRewards ads that produce near-instant action.Rewards ads that produce action even if it takes days to land.
Availability on MetaThe tightest option offered, available on essentially every account.Meta's standard default click window.
What it costs you when wrongReal multi-day conversions never get counted at all.You end up judging a campaign's early days before the number has finished filling in.

What actually separates them.

01

Every conversion counted under a 1-day window also falls inside a 7-day window for the same traffic, so switching to the wider setting can only hold volume steady or raise it, never lower it.

02

Under a 7-day window a conversion is attributed back to the date of the click, so the last several days of reporting keep revising upward as the window fills in, while 1-day numbers are largely done by the next morning.

03

A 1-day window forces the system to favor people likely to act almost immediately, which changes who the ad actually gets shown to, not just how the results get labeled.

04

Comparing a 1-day-click campaign's reported cost per conversion against a 7-day-click campaign's is comparing two different measuring sticks, not two campaigns that performed differently.

05

Automated bidding treats whichever window is active as its training signal, so a longer window feeds it more eventual conversions per click but with more delay before each one resolves.

Which one should you use?

Use 1-Day Click Attribution when

  • You are selling low-price items people decide on in minutes, not days.
  • You are running app install or signup campaigns judged on rapid post-click action.
  • You want a dashboard number that finalizes quickly instead of revising for a week.
  • You are testing creative and need a same-day read instead of waiting for a window to close.
  • You are running a flash sale where the offer itself only lasts a day or two.

Use 7-Day Click Attribution when

  • You sell a considered purchase where people click, leave, compare, and come back later.
  • You want Meta's standard click setting rather than a tightened custom one.
  • Your product has a multi-day decision cycle, common in B2B or higher-ticket goods.
  • You are comfortable holding judgment for a week instead of reacting to day-one numbers.
  • You need visibility into conversions that happen after someone abandons and returns to buy.

Common questions.

If I switch from 7-day click to 1-day click, will I lose historical data?

No, past reporting stays as it was recorded under the setting active at the time. Going forward, though, expect the reported conversion count to drop, because real conversions that land between day two and day seven will no longer qualify under the tighter window.

Why did my campaign's conversions keep rising after the week already ended?

This is normal behavior for a 7-day click window - a conversion gets attributed back to the date of the click, so a click on Monday that converts on Friday shows up added to Monday's total once it happens. Wait for the full window to close before treating a day's number as final.

Does a shorter attribution window actually save money, or just hide conversions?

It does not change what happened, only what gets counted. A 1-day window will undercount real conversions that take two or three days to land, which can make a genuinely working campaign look weaker than it is if your buyers do not decide instantly.

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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