Analyzing the visitors by yourself web site is easy with Google Analytics and Search Console. However analyzing visitors on third-party websites requires exterior instruments.
I’ll examine three of these instruments on this publish.
To check, I’ll use a consumer’s web site since I can entry precise knowledge. The location generates roughly 100,000 month-to-month classes from varied sources. Natural search visitors is about 80,000 month-to-month classes — roughly 75,000 from Google.
Ahrefs: Google Natural and Paid
Ahrefs estimates visitors from Google search — natural and paid — on any web site based mostly on its inside rankings evaluation. It features a graph that makes an attempt to approximate that visitors over time.
You may simply match visitors and rating fluctuations by hovering over the dates within the graph. Ahrefs estimates my web site’s month-to-month visitors (as of Could 2023) at 37,112 classes, greater than 50% decrease than the precise.

Ahrefs assesses a website’s natural visitors over time, displaying quantity and fluctuations. The visitors estimate of the writer’s website was roughly 50% too low. Click on picture to enlarge.
You can too see your guests’ international locations. This chart was roughly correct, with one exception. In line with Google Analytics, the third hottest nation was United Kingdon, with Phillippines following it.

Ahrefs reviews visitors by nation, though the writer’s website has extra visitors from the U.Ok. visitors than the Philippines. Click on picture to enlarge.
Pricing for Ahrefs begins at $99 per 30 days. Superior analyses (similar to high pages by natural clicks) require the $199-per-month model or larger. Ahrefs gives no free trial.
Semrush: Google Natural and Paid
Semrush offers related knowledge as Ahrefs based mostly on its inside estimates of rankings. Correlating visitors and rankings in Semrush is, to me, not as straightforward as in Ahrefs, however the output is nearly the identical. Semrush reported my month-to-month visitors at 39,073 classes which, like Ahrefs, is wildly incorrect.

Semrush estimates a website’s month-to-month visitors from Google natural search. Click on picture to enlarge.
Semrush additionally inaccurately positioned the Philippines because the third hottest nation. The device’s rating of my high pages by natural clicks was additionally improper.
Semrush’s costs begin at $120 per 30 days with a 7-day free trial (bank card is required).
Similarweb: All Sources
I don’t have a Similarweb premium account. What follows is my analysis based mostly on the free trial.
Similarweb reviews the general visitors of any web site from all channels, not simply Google. The information comes from 4 sources, per Similarweb: partnerships, knowledge from varied web sites, Similarweb’s apps and extensions put in on various gadgets, and publicly obtainable data. These descriptions are obscure, though I can perceive why owing to aggressive pressures.
Similarweb estimated month-to-month classes at my website as 79,763 (once more, the precise is about 100,000). Like Ahrefs and Semrush, Similarweb’s rating of the highest traffic-driving international locations was inaccurate.
Similarweb’s estimate of my high visitors channels was shut, though my precise referral visitors is far larger than 2.23%.

Similarweb’s estimate of the writer’s high visitors channels was shut, though the precise referral visitors is larger than 2.23%. Click on picture to enlarge.
The platform’s estimation of my high traffic-driving social community was improper, as had been the highest referral sources. (I ought to add Google Analytics is improper, too, because it reveals e-mail advertising visitors as a referral.) Similarweb was pretty shut at figuring out high traffic-driving search queries.
General, Similarweb supplied helpful knowledge to match web sites, albeit with flaws. Utilizing it together with Ahrefs or Semrush offers a extra full overview.
Similarweb gives a free 7-day trial however doesn’t publish costs.
Useful, not Excellent
My takeaways from Ahrefs’ and Similarweb’s natural visitors evaluation:
- The instruments’ estimations had been surprisingly shut. I see no purpose to make use of each of them.
- Each seem to see about half of Google’s searches. That could be a lot however comprehensible, as long-tail queries are unpredictable, and roughly 15% of all searches are new, per Google.
- The 2 instruments agree on visitors tendencies, a really helpful perception. Their visitors graphs embody citations for Google updates to see the impact.
All three instruments underestimated the precise visitors of my website however offered useful knowledge for aggressive analysis.