The short version: there is no single "true" backlink count for any website because no tool crawls the entire web, so the right approach is picking one backlink checker, running the same report consistently, and tracking the trend rather than chasing a perfect number. Google Search Console, Ahrefs, Semrush and Moz will all give you different totals for the same domain, sometimes by hundreds of thousands, and that is normal, not a bug.
Why there's no single correct backlink number
I'll say the uncomfortable bit first because every other article on this topic buries it. The number you get depends entirely on whose database you ask, and the databases disagree wildly. Ahrefs crawls roughly 7 trillion pages. Semrush's index is built differently again. Google Search Console only shows links Google itself has indexed and chosen to surface to you, which is always a fraction of what's really out there. So if you run the same domain through four tools and get four different answers, you haven't done anything wrong. You've just discovered that "total backlinks" is a modelled estimate, not a fact like a bank balance.
This matters because I still see business owners panic when a new tool shows fewer links than the last one did, as if they've lost authority overnight. They haven't. The web didn't shrink. The crawler just saw less of it.
Step by step: counting backlinks with free tools first
Start free before you pay for anything.
- Google Search Console (free, needs site verification): go to Links in the left menu, then Top linking sites. This shows external links Google has recorded to your verified property. It's not comprehensive but it's your own first-party data straight from the source that ranks you.
- Bing Webmaster Tools (free): same idea, different crawler. Worth checking because Bing sometimes picks up links Google hasn't indexed yet.
- Ahrefs Webmaster Tools, the free tier: verify your site and you get a capped but useful backlink report, including referring domains, not just raw link count, which is the number that matters more.
Step by step: counting with paid tools when you need the full picture
Once you need competitor comparisons or a client report, free tiers stop cutting it.
- Open Ahrefs' Site Explorer, type in the domain, and look at the "Backlinks" tab under the Overview. You'll see total backlinks and, separately, referring domains. Always report both.
- In Semrush, use the Backlink Analytics tool. It gives a similar split, plus a toxicity score that Ahrefs doesn't flag the same way.
- In Moz Pro, check Link Explorer for Domain Authority alongside the link count, since Moz weights quality differently from the other two.
- Export all three into one spreadsheet, note the date, and that becomes your baseline. Re-run monthly, same tools, same day of the month, so you're comparing like with like.
A worked example
Say you run a small accountancy practice website with maybe 40 pages. You check Ahrefs and it reports 1,200 total backlinks from 85 referring domains. You check Semrush the same afternoon and it says 2,900 backlinks from 110 referring domains. Which one is right? Neither, fully. What you do is note both, then six months later run the same two tools again. If Ahrefs now shows 85 referring domains and Semrush shows 110 again, your link profile is flat, whatever the raw link number says. If both referring domain counts have climbed by 20 to 30, you're building authority, because referring domains (unique sites linking to you) is a far stronger signal than raw backlink count (which can be inflated by one site linking to you from fifty different blog posts).
That's the practical lesson most guides skip. One shopping directory linking to you from 300 of its category pages isn't 300 votes of confidence, it's one site that happens to template its links. Count referring domains as your real headline number and keep total backlinks as a secondary, almost decorative stat.
What to check once you have the count
A high number means very little on its own. I'd rather see 40 referring domains from real trade publications, local news sites and genuine industry blogs than 4,000 backlinks from spun directory listings and comment spam. When you pull your report, filter for:
- Domain Rating or Domain Authority of the linking site, not just its existence
- Whether the link is dofollow or nofollow (nofollow links still have some value for traffic and visibility, but weight them lower)
- Whether the linking domain looks like a real business with real traffic, or a thin site built purely to sell links
If you're trying to work out whether your current link profile is helping you or quietly holding you back, and you don't have time to learn three different tools, that's exactly the kind of audit an AI consultant for small business can run for you alongside the rest of your marketing setup.
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A quick word on disavowing and cleaning up
Once you've got your count and your quality filter done, you might find spammy links you didn't ask for, from scraped content sites or old directory submissions. Google's own guidance is that you generally don't need to disavow unless you've done manual link schemes yourself or you're seeing a clear manual action in Search Console. Don't waste a weekend disavowing links out of nerves. Most sites carry some junk links and Google largely ignores them already.
Frequently asked questions
How do I count the total backlinks pointing to my website for free?
Use Google Search Console's Links report for your own verified data, plus Ahrefs Webmaster Tools' free tier for a capped but useful external view, and compare the two rather than trusting either one alone.
Why do different backlink checkers show different numbers for the same site?
Each tool, Ahrefs, Semrush, Moz and Google itself, crawls and indexes a different slice of the web, so no checker has the complete picture and totals will always vary, sometimes by a wide margin.
Is total backlinks or referring domains the more important number?
Referring domains, the count of unique sites linking to you, is the stronger signal, because one site can create hundreds of backlinks from templated pages that don't represent hundreds of real endorsements.
How often should I check my backlink count?
Monthly is enough for most small businesses, using the same tool and the same date each time so you're tracking a genuine trend rather than reacting to a single snapshot.
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