How Long Google Updates Actually Take: 53 Rollouts Measured

This is measured from my own tracker, not estimated. Every start and end date comes from Google’s Search Status Dashboard.

Fifty-three entries, January 2020 to October 2026, including the two ranking incidents most lists leave out.

Rollout length by update type

Type	Count	Shortest	Median	Longest
Core	21	3 days	14 days	45 days
Spam	12	1 day	7 days	27 days
Reviews	8	6 days	14 days	29 days
Helpful content	3	14 days	15 days	38 days
Link spam	2	29 days	29 days	29 days
Ranking incidents	2	4 days	15 days	26 days
Other	5	1 day	9 days	79 days

The core update median of 14 days is the single most useful number here. It tells you when measurement becomes meaningful.

The extremes

• Longest: the page experience update at 79 days in 2021. Google rolled it out deliberately slowly to avoid disruption.
• Longest core: March 2024 at 45 days, more than three times the core median.
• Shortest: the March 2026 spam update at under a day, and passage ranking which was effectively complete in two.

Length does not predict impact. The sub-day March 2026 spam update moved rankings sharply. The 27-day August 2025 spam update moved them modestly. Rollout time reflects deployment choices, not magnitude.

Rollouts are getting shorter

Year	Updates	Average rollout
2021	11	18.1 days
2022	10	15.3 days
2023	10	18.1 days
2024	8	15.9 days
2025	4	19.0 days
2026	7	9.4 days

2026 is roughly half the average of every year before it.

Most of that is composition rather than speed. 2026 ran four spam updates against two core updates, the first year spam outnumbered core, and spam updates are structurally shorter.

What this means for measurement

A shorter rollout gives you less time to record a baseline, not an easier diagnosis.

• Under 3 days — most owners notice after it finished. The cause is already historical.
• 7 to 14 days — the common band. Rankings move in both directions throughout, so week one is not a verdict.
• Over 20 days — partial recoveries mid-rollout are routine. Measuring early produces a reading that reverses.

The rule that follows from the data: wait for completion, then 28 days. Not because it is cautious, but because the intermediate numbers are not the result.

The gap matters more than the rollout

A 14 day rollout is not your timeline. The wait for the next one is.

Core ranking systems re-score during core updates, so recovery work waits for the next rollout to start. Those gaps have run from 7 days to 199 days.

As of late October 2026, nothing core has been confirmed since the May update completed on 2 June. That is covered in no core update since May 2026, and the live interval is on the core update countdown.

Method and limits

• Source: Google Search Status Dashboard, synced to my tracker twice daily.
• Period: January 2020 to October 2026, 53 entries.
• Durations are calculated from stated start and end dates, rounded to whole days.
• Limit: Google’s own dashboard only begins 3 November 2021. Pre-2022 entries are reconstructed from Google’s announcements at the time and may differ by a day.
• Limit: this measures announced updates only. Measured volatility stays high in months with no announcement.

The full list with every date is at the update tracker, and how it is built is in the methodology.

Third-party update histories sometimes list dates or durations that differ from Google’s dashboard. How they compare is in Google algorithm update histories compared.

Using these numbers when an update hits you

• A core update has just started. Expect it to finish around two weeks later, but allow for up to six. Change nothing structural in that window.
• A spam update has just started. Most finish within a week. If your site has a clear policy problem, start fixing it now, because spam systems reassess continuously.
• An update finished yesterday. Count 28 days from the end date before reading the result.
• No update is listed. These rollout figures do not apply. Check the volatility record and your own recent changes instead.

What these figures cannot tell you

Duration describes how Google deployed an update, not how much it changed. A one day spam update can move a single niche more than a month long core update moves the wider web.

Nor do they tell you when your own site will be reassessed. That depends on when the next update of the right type arrives, which is the question covered in no core update since May 2026.

Use them for planning, not prediction. They tell you how long to hold still once something starts, which is the decision most people get wrong.

The underlying list is public. Every date used here can be checked on the update tracker, and against Google’s own Search Status Dashboard for anything since November 2021.

Reading a rollout in your own data

Updates rarely hit every page on the same day. They reach different queries and markets over the rollout, so movement arrives in waves.

• Mark the start and end dates on your daily Search Console chart.
• Expect staggered movement, with some pages moving early and others late.
• Ignore the first few days as a guide to the final result.
• Compare page groups rather than the whole site, so a rise in one section does not hide a fall in another.

The final shape only becomes clear well after the end date. That is why the 28 day rule exists.