SwiftCalcTools

Backlink Checker — Free Backlink Analyzer

Check backlinks pointing to any website or URL. Analyze your backlink profile and spy on competitor link building strategies.

🔍 SEO Tools ✅ Free

By SwiftCalcTools Editorial Team · Formula verified

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How to Use Backlink Checker

  1. 1Enter the required values in the input fields above.
  2. 2Click the Calculate button or results update instantly as you type.
  3. 3View your results in the output panel below the inputs.
  4. 4Adjust any values to recalculate instantly.

Frequently Asked Questions

A backlink (also called an inbound link) is a link from one website to another. When website A links to website B, website B receives a backlink. Backlinks are a major ranking factor for search engines — sites with more high-quality backlinks tend to rank higher.
A referring domain is a unique website that links to your site at least once. If one site links to you 10 times, it counts as 1 referring domain but 10 backlinks. Referring domains is generally considered a more important metric than raw backlink count.
Google Search Console (free) shows links to your site under the "Links" report. For competitor research or more detailed data, use Ahrefs Free Backlink Checker, Moz Link Explorer (free version), or Semrush (limited free queries per day).
Toxic or spam backlinks come from low-quality, irrelevant, or penalized websites. They can potentially harm your rankings. You can identify them using tools like Ahrefs or SEMrush and remove them by contacting webmasters or using Google's Disavow tool.