> TL;DR: 7-day click attribution is Meta's default for Instagram ads. It credits a conversion to your ad when someone clicks it and converts within 7 calendar days. Your campaign reporting and algorithm optimization both depend on this window.
Meta counts conversions using attribution windows. The 7-day click window is the standard. Here is exactly how it works and what to do with it.
What Is 7-Day Click Attribution?
7-day click attribution is how Meta decides which ad gets credit for a conversion. When someone clicks your Instagram ad, a 7-day window opens. Any purchase, lead, or other conversion they complete before that window closes gets credited to your ad.
Per Meta's Business Help Center, 7-day click is the default attribution setting for newly created campaigns. If you have never changed it, this is how your results are being measured right now.
How 7-Day Click Attribution Works on Instagram Ads
Understanding the mechanics helps you trust your reporting data and stop second-guessing your numbers.
The Role of the Meta Pixel in Tracking Clicks
The Meta Pixel is required for click attribution to work. It sits on your website and fires when a visitor completes a conversion event, like a purchase or form submission. Without a properly installed Pixel, Meta cannot connect ad clicks to on-site actions. Per the Meta Business Help Center, you also need to configure conversion events in Events Manager for attribution windows to function correctly.
How Conversions Are Credited Within the 7-Day Window
The clock starts the moment someone clicks your ad. A conversion on day one counts. A conversion on day six counts. A conversion on day eight does not. The window is strict. Click attribution also wins over view attribution. If a user clicked your ad, the click gets the credit regardless of any earlier view.
Why Click Attribution Matters for Campaign Optimization
Attribution settings do more than shape your reports. They tell the Meta algorithm what to optimize for. The signal you set determines which users Meta targets with future delivery. Change the window and you change the optimization signal. This is why your attribution setting at campaign creation has a lasting impact on performance.
7-Day Click vs. Other Attribution Models
Each attribution window tells a different story about your results. Knowing the differences helps you pick the right lens for your goals.
7-Day Click vs. 1-Day View
1-day view credits a conversion to an ad if the user saw it without clicking and converted within 24 hours. It is a weaker signal and harder to trust after Apple's iOS 14 privacy changes. Per Meta's developer blog, Meta stopped defaulting to 7-day click plus 1-day view for new campaigns in early 2021. iOS restrictions block view-through tracking for many users, making that combined model unreliable.
7-Day Click vs. 28-Day Click
28-day click captures more total conversions. It is useful for products with longer consideration cycles, like high-ticket purchases or B2B services. The tradeoff: a 28-day window may credit your ad for sales that were influenced by email, organic search, or a competitor retargeting campaign. 7-day click is a cleaner, more conservative signal for most campaigns.
Choosing the Right Attribution Window for Your Goals
Use 7-day click for most direct-response campaigns. It fits typical consumer purchase cycles and aligns with how Meta optimizes delivery. Use 1-day click when your product sells fast and you want the tightest, most conservative data. Use 28-day click only when your sales cycle clearly runs longer than a week.
How to Set or Change Your Attribution Window in Ads Manager
Attribution is locked at campaign creation. You cannot backdate it to existing campaigns.
Where to Find Attribution Settings
Open Meta Ads Manager and click Create. After you select your campaign objective and reach the ad set level, look for the Attribution Setting section. It appears near your budget and schedule options. This is the only place to set the window before a campaign goes live.
Step-by-Step Instructions to Switch to 7-Day Click
- Open Ads Manager and click Create.
- Choose your campaign objective.
- At the ad set level, find Attribution Setting.
- Select 7-day click from the dropdown options.
- Complete your creative and targeting setup, then publish.
Per Meta's Ads Manager documentation, this setting applies to the campaign you are currently creating.
Applying Attribution Settings Across Campaigns
Existing live campaigns keep their original attribution setting. To update an old campaign, duplicate it, apply the new attribution window, and run the duplicate. Do not attempt to retroactively change a live campaign. The data will not align with earlier periods and your optimization history will reset.
Best Practices for Using 7-Day Click Attribution
Getting attribution right keeps your data clean and gives the Meta algorithm the right signal.
When to Use 7-Day Click (vs. Alternatives)
7-day click fits most ecommerce and lead gen campaigns. It gives the algorithm enough conversion volume to optimize without pulling in sales from weeks ago. Stick with it unless your product has a clearly longer consideration cycle. When in doubt, start with the default.
Understanding Partial Data and iOS Impact
iOS users with App Tracking Transparency (ATT) enabled limit Meta's ability to track post-click conversions. Meta uses Aggregated Event Measurement to statistically model those missing signals. This means your 7-day click numbers may undercount real conversions from iOS devices. Your actual results are likely better than what Ads Manager shows.
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Frequently Asked Questions
What does 7-day click attribution mean on Instagram ads?
It means Meta credits a conversion to your ad if someone clicked it and completed a purchase, sign-up, or other action within 7 calendar days of that click. Conversions after day 7 are not attributed to the ad.
Is 7-day click the default attribution setting for Meta ads?
Yes. Per Meta's Business Help Center, 7-day click is the default attribution setting for all newly created campaigns. If you have not changed it manually, your campaigns are using this window right now.
Can I change my attribution window after a campaign is already live?
No. Attribution settings cannot be retroactively applied to existing campaigns. To switch windows, duplicate the campaign, set the new attribution window at the ad set level, and run the duplicate instead.
Why do my Instagram ad conversions look lower than expected?
iOS users with App Tracking Transparency (ATT) enabled limit Meta's tracking ability. Meta uses Aggregated Event Measurement to model these conversions statistically, which can result in underreported numbers. Your actual conversion count is likely higher than what Ads Manager shows.