--- title: "How many confirmed Google updates ship a year, 2015 to 2026" url: https://seomadman.com/reports/confirmed-update-frequency-2015-2026 section: reports published: 2026-07-07T00:00:00.000Z modified: 2026-07-07T00:00:00.000Z author: Adam Hafez topics: ["Core updates"] --- # How many confirmed Google updates ship a year, 2015 to 2026 ## The short answer Ahrefs' tracker counts 87 confirmed major Google updates between 2015 and year-to-date 2026, averaging six to nine a year with a 2021 spike of fourteen. Google itself reports over 4,000 total Search improvements in 2023 alone - a figure for undisclosed daily tweaks, not confirmed major updates, and the two must never be quoted as the same thing. ## Key takeaways - Ahrefs' Google Algorithm Updates History lists 87 confirmed major updates from 2015 through year-to-date 2026. - The busiest year on record is 2021 with 14 confirmed updates, driven by spam, page experience and product review updates layered on top of two core updates. - Google's own "How Search Works" page reports 700,000-plus experiments and 4,000-plus improvements to Search in 2023 - a total-changes figure, not a confirmed-update count. - The confirmed count for 2023 was 9 major updates, meaning Google's own 4,000-plus figure for that year describes roughly 450 times more changes than the confirmed-update count. - 2026 has recorded 6 confirmed updates through 18 August, on pace with the 2015-2020 average after the higher-volume 2021-2022 period. Every year someone asks how many Google updates actually happened, and every year the honest answer depends on which number you mean. Google confirms a small set of major updates by name. It also reports launching thousands of changes it never names at all. Conflating the two produces headlines like "Google changes Search 4,000 times a year" applied to a table of eight or nine named events - true of neither number. ## The confirmed count, year by year | Year | Confirmed major updates | | --- | --- | | 2015 | 6 | | 2016 | 5 | | 2017 | 4 | | 2018 | 5 | | 2019 | 8 | | 2020 | 7 | | 2021 | 14 | | 2022 | 10 | | 2023 | 9 | | 2024 | 8 | | 2025 | 5 | | 2026 (through 18 Aug) | 6 | Total: 87 confirmed updates across eleven full years plus 2026 year-to-date. The average across full years (2015-2025) is just under 8 a year. 2021 is the outlier at 14, driven by Google layering spam, page experience, product review and Core updates in the same twelve months rather than any single update running longer than usual. ## Why "confirmed major update" and "total changes" are not the same number Google's own "How Search Works" documentation states it "ran over 700,000 experiments that resulted in more than 4,000 improvements to Search" in 2023. That is Google's figure, for Google's own count of everything it shipped that year: ranking tweaks, UI changes, spam-signal adjustments, most of them small enough that no site owner could isolate one in their analytics even if they tried. The confirmed count for the same year, 2023, was 9. Google's total-changes figure for 2023 is roughly 450 times the confirmed-update count for that year. Neither number is wrong - they measure different things. The 4,000-plus figure answers "how much does Google touch Search in a year." The count in the table above answers "how many of those touches did Google name publicly, with a start date you can check your own traffic against." Only the second number is something a site owner can use to date a ranking change; the first cannot be attributed to anything specific because Google never says which sites, queries or signals each of those thousands of changes affected. ## Why we care If you are trying to explain a traffic move, the table above is the list of dates worth checking your [Search Console](/topics/search-console) export against - not the 4,000-plus figure, which names no dates and no sites. When a client or a headline cites "Google changes its algorithm thousands of times a year" as justification for treating every unexplained ranking shift as an update, this is the distinction to bring back to the conversation: thousands of changes happened, none of them named, and the [core update](/topics/core-updates) count for that same year was in the single or low double digits. ## Frequently asked questions ### How many confirmed Google updates happen in a typical year? Across 2015 to 2026 year-to-date, the count per year ranges from 4 (2017) to 14 (2021), with most years landing between 5 and 10. There is no fixed cadence; the number moves with how much Google chooses to name and announce. ### Is Google's "4,000 improvements a year" figure the same as the update count in this table? No. That figure, from Google's own "How Search Works" page, counts every launched change to Search in 2023, most of it undisclosed and untraceable to any single ranking shift. The 9 confirmed major updates for 2023 in this table are the subset Google named publicly. ### Why does the count for 2026 stop at 6? Because this report was compiled on 11 September 2026 and only counts updates confirmed by that date. The August 2026 spam update is the most recent entry; anything after this report's publish date is not reflected here. ## Sources 1. [Google Search Status Dashboard](https://status.search.google.com/summary) - Google (primary) 2. [How Google Search Works - Rigorous testing](https://www.google.com/search/howsearchworks/how-search-works/rigorous-testing/) - Google (primary) 3. [Google Algorithm Updates History](https://ahrefs.com/google-algorithm-updates) - Ahrefs