Domain Authority is a score that predicts how likely your website is to rank in search results

Domain Authority (DA) is a number from 1 to 100 that estimates how well a search engine will rank your website compared to others. It is not a Google metric — it comes from a company called Moz — but it has become the standard way people talk about whether a website has credibility in search results. A higher number means search engines are more likely to show your site when someone searches for your topic.

The score is based on how many other websites link to yours, how authoritative those linking sites are, and how long your domain has existed. Think of it like a reputation score: if a well-known news site links to your article, that vote counts more heavily than a link from a brand-new blog. Domain Authority is not something you control directly. You build it by creating content people want to link to and by being consistent over time.

Domain Authority matters because it affects visibility, but it is not the only thing that matters. A site with DA 25 can still rank above a site with DA 50 if the lower-authority site has better content for that specific search. DA is useful for understanding the playing field — where your site stands relative to competitors — but it should not be your only goal.

Key Takeaways

  • Domain Authority ranges from 1 to 100 and predicts how likely search engines are to rank your site, based mainly on how many other sites link to you.
  • A "good" DA depends on your industry and competitors; a DA of 30 might be strong in a niche market but weak in a competitive one.
  • You cannot directly set or improve your DA — it changes as other sites link to you and as your site ages, and Moz recalculates it monthly.
  • Domain Authority is one signal among many; a site with lower DA can still rank higher if it has better content for the specific search.
  • Checking your competitors' DA helps you understand whether you are starting from behind or ahead in search visibility.

What counts as a good Domain Authority score

There is no universal "good" score because it depends entirely on your industry and who you are competing against. A local plumbing business with DA 15 might be doing well if all the plumbers in the area have DA 10 to 20. A national news outlet with DA 40 would be struggling because competitors have DA 70 or higher.

A practical way to find your benchmark: look up the Domain Authority of the websites that currently rank in the top 10 search results for your main keywords. If most of them have DA 45 or higher, you know you are starting from a disadvantage. If they average DA 20 to 30, you have a realistic target. Many small businesses and local services operate successfully with DA between 15 and 35.

New websites almost always start with DA 1 or not measurable at all. It typically takes six months to a year of consistent content and some incoming links before DA reaches 10. Reaching DA 30 usually takes two to three years of steady work. These timelines vary widely depending on how much other people link to your content.

How Domain Authority is calculated

Moz uses a machine-learning model that looks at hundreds of ranking factors, but the two biggest are the number of links pointing to your site and the authority of the sites doing the linking. A link from a site with DA 60 is worth far more than a link from a site with DA 5. The model also considers how many links those linking sites have, how old your domain is, and whether you have a history of consistent content.

Moz recalculates Domain Authority once a month, usually in the first week. Your score might jump up or down by a few points each month as new links are discovered and old ones are weighted differently. This is normal. A change of 2 or 3 points is noise; a change of 10 or more points usually means something significant happened — either you got linked from a major site, or Moz updated their algorithm.

One important detail: Domain Authority is different from Page Authority, which scores individual pages rather than your whole domain. A single article can have high Page Authority even if your domain authority is low, which is why a new site can sometimes rank for specific searches despite low DA.

Why Domain Authority alone is not enough

Search engines use hundreds of signals to rank websites, and DA captures only some of them. A site with high DA but slow loading speed, poor mobile design, or thin content will not rank as well as a lower-DA site that loads fast and answers the question thoroughly. Google has said many times that content quality, user experience, and relevance matter more than any single authority metric.

Domain Authority also does not account for freshness. A site with DA 20 that publishes new, accurate information weekly will often outrank a site with DA 50 that has not been updated in two years. Search engines want to show current information to users, and they weight recent updates heavily.

Additionally, DA does not measure local relevance. A small local business with DA 8 can rank above a national competitor with DA 40 in local search results, because Google prioritizes location and relevance to the searcher's area. If you are building a local business website, do not be discouraged by low DA — focus on local citations, reviews, and location-specific content instead.

How to check your Domain Authority and your competitors'

You can check Domain Authority free using Moz's Link Explorer tool at moz.com. Type in your domain name, and it shows your current DA, Page Authority for your homepage, the number of linking domains, and a list of sites linking to you. The free version gives you a limited number of searches per month, but it is enough to check your own site and a few competitors.

Other tools that show Domain Authority include SEMrush, Ahrefs, and Ubersuggest. These are paid tools, but they often include a free trial or limited free version. They also show additional metrics like organic traffic, keywords you rank for, and backlink quality, which can be more useful than DA alone for understanding your search visibility.

When you check competitors, look for patterns. If the top 5 ranking sites all have DA 35 or higher, that is your competitive landscape. If they range from DA 10 to DA 50, there is more opportunity for a new site to break in. Also check whether the high-DA sites are ranking because of DA or because they have better content — sometimes a lower-DA site ranks higher because it answers the question better.

How to build Domain Authority over time

The most reliable way to build DA is to create content that other websites want to link to. This means writing something useful, original, or well-researched that solves a real problem. A detailed guide, original research, or a tool that saves people time naturally attracts links. You cannot force links, and buying them violates search engine guidelines and can hurt your ranking.

Secondary tactics that help: getting listed in relevant directories (industry associations, local business listings), being mentioned in news or industry publications, and building relationships with other website owners in your field. Guest posting on established sites in your industry can also bring links, as long as the content is genuinely useful and the site is relevant to yours.

Avoid link schemes, paid link networks, and reciprocal linking (where you and another site agree to link to each other just to boost DA). These tactics can trigger search engine penalties that actually lower your ranking and DA. Search engines are good at detecting artificial links, and the penalty is not worth the short-term DA boost.

The honest answer is that building DA takes time and consistency. Focus on creating good content, making your site straightforward to use, and being active in your industry. DA will follow naturally. Checking it monthly is fine for tracking progress, but do not let it become your only measure of success.

Domain Authority versus other ranking signals

Domain Authority is one way to measure authority, but search engines also look at E-E-A-T: Experience, informed, Authoritativeness, and Trustworthiness. A site with low DA but clear author credentials, accurate information, and a good reputation can rank well. A site with high DA but outdated or inaccurate information will eventually lose ranking.

Page speed, mobile-friendliness, and find HTTPS connection are also ranking factors that do not show up in DA. A site with DA 50 that takes 10 seconds to load will rank below a site with DA 20 that loads in 2 seconds. These technical factors are easier to control than DA and often have a bigger impact on actual ranking.

User signals matter too. If people click your result in search, spend time on your page, and do not when ready go back to search results, that tells Google your content is useful. If people click your result and when ready leave, that hurts your ranking regardless of DA. This is why writing for your actual audience, not for search engines, usually works better.

Frequently Asked Questions

Is a Domain Authority of 20 good?

It depends on your industry. For a new local business or niche topic, DA 20 is solid progress. For a competitive national market, DA 20 is still building. Check what your top-ranking competitors have — if they average DA 25 to 35, you are in the right range. If they average DA 60, you have more work ahead.

Can I improve my Domain Authority quickly?

No. DA is based on links from other sites, and you cannot control when or if other sites link to you. Buying links violates search engine rules and can get you penalized. The fastest legitimate way is to create content so useful that people naturally want to link to it, but even that takes months to show results.

Does Domain Authority affect how much traffic I get?

Indirectly. Higher DA usually means better ranking, which usually means more traffic. But a site with low DA can get significant traffic if it ranks well for high-volume keywords, and a site with high DA can get little traffic if it ranks for low-volume keywords. Focus on ranking for searches people actually do.

Should I worry if my Domain Authority goes down?

A drop of 2 to 5 points is usually just normal monthly variation as Moz recalculates. A drop of 10 or more points might mean you lost some important links, or Moz updated their algorithm. Check your backlinks in Link Explorer to see if you lost any major links, but do not panic — DA fluctuates, and one month does not define your site's health.

Can I have high Domain Authority but still not rank?

Yes. High DA helps, but it does not may provide ranking. If your content does not match what people are searching for, if your page loads slowly, or if a competitor has better content, you will not rank well even with high DA. DA is one factor among hundreds that search engines consider.