• ramc-7JcUnB

        See all notifications

        Skip to content
        Moz logo Menu open Menu close
        • Products
          • Moz Pro
          • Moz Pro Home
          • Moz Local
          • Moz Local Home
          • STAT
          • Moz API
          • Moz API Home
          • Compare SEO Products
          • Moz Data
        • Free SEO Tools
          • Domain Analysis
          • Keyword Explorer
          • Link Explorer
          • Competitive Research
          • MozBar
          • More Free SEO Tools
        • Learn SEO
          • Beginner's Guide to SEO
          • SEO Learning Center
          • Moz Academy
          • MozCon
          • Webinars, Whitepapers, & Guides
        • Blog
        • Why Moz
          • Digital Marketers
          • Agency Solutions
          • Enterprise Solutions
          • Small Business Solutions
          • The Moz Story
          • New Releases
        • Log in
        • Log out
        • Products
          • Moz Pro

            Your all-in-one suite of SEO essentials.

          • Moz Local

            Raise your local SEO visibility with complete local SEO management.

          • STAT

            SERP tracking and analytics for enterprise SEO experts.

          • Moz API

            Power your SEO with our index of over 44 trillion links.

          • Compare SEO Products

            See which Moz SEO solution best meets your business needs.

          • Moz Data

            Power your SEO strategy & AI models with custom data solutions.

          Enhance Keyword Discovery with Bulk Analysis
          Moz Pro

          Enhance Keyword Discovery with Bulk Analysis

          Learn more
        • Free SEO Tools
          • Domain Analysis

            Get top competitive SEO metrics like DA, top pages and more.

          • Keyword Explorer

            Find traffic-driving keywords with our 1.25 billion+ keyword index.

          • Link Explorer

            Explore over 40 trillion links for powerful backlink data.

          • Competitive Research

            Uncover valuable insights on your organic search competitors.

          • MozBar

            See top SEO metrics for free as you browse the web.

          • More Free SEO Tools

            Explore all the free SEO tools Moz has to offer.

          NEW Keyword Suggestions by Topic
          Moz Pro

          NEW Keyword Suggestions by Topic

          Learn more
        • Learn SEO
          • Beginner's Guide to SEO

            The #1 most popular introduction to SEO, trusted by millions.

          • SEO Learning Center

            Broaden your knowledge with SEO resources for all skill levels.

          • On-Demand Webinars

            Learn modern SEO best practices from industry experts.

          • How-To Guides

            Step-by-step guides to search success from the authority on SEO.

          • Moz Academy

            Upskill and get certified with on-demand courses & certifications.

          • MozCon

            Save on Early Bird tickets and join us in London or New York City

          Access 20 years of data with flexible pricing
          Moz API

          Access 20 years of data with flexible pricing

          Find your plan
        • Blog
        • Why Moz
          • Digital Marketers

            Simplify SEO tasks to save time and grow your traffic.

          • Small Business Solutions

            Uncover insights to make smarter marketing decisions in less time.

          • Agency Solutions

            Earn & keep valuable clients with unparalleled data & insights.

          • Enterprise Solutions

            Gain a competitive edge in the ever-changing world of search.

          • The Moz Story

            Moz was the first & remains the most trusted SEO company.

          • New Releases

            Get the scoop on the latest and greatest from Moz.

          Surface actionable competitive intel
          New Feature

          Surface actionable competitive intel

          Learn More
        • Log in
          • Moz Pro
          • Moz Local
          • Moz Local Dashboard
          • Moz API
          • Moz API Dashboard
          • Moz Academy
        • Avatar
          • Moz Home
          • Notifications
          • Account & Billing
          • Manage Users
          • Community Profile
          • My Q&A
          • My Videos
          • Log Out

        The Moz Q&A Forum

        • Forum
        • Questions
        • My Q&A
        • Users
        • Ask the Community

        Welcome to the Q&A Forum

        Browse the forum for helpful insights and fresh discussions about all things SEO.

        1. Home
        2. Moz Tools
        3. Moz Pro
        4. What is the logarithmic scale used for domain authority?

        Moz Q&A is closed.

        After more than 13 years, and tens of thousands of questions, Moz Q&A closed on 12th December 2024. Whilst we’re not completely removing the content - many posts will still be possible to view - we have locked both new posts and new replies. More details here.

        What is the logarithmic scale used for domain authority?

        Moz Pro
        3
        3
        2823
        Loading More Posts
        • Watching

          Notify me of new replies.
          Show question in unread.

        • Not Watching

          Do not notify me of new replies.
          Show question in unread if category is not ignored.

        • Ignoring

          Do not notify me of new replies.
          Do not show question in unread.

        • Oldest to Newest
        • Newest to Oldest
        • Most Votes
        Reply
        • Reply as question
        Locked
        This topic has been deleted. Only users with question management privileges can see it.
        • garypropellernet
          garypropellernet last edited by

          I want to quantify how much better a score of 80 is compared to 60.

          Or 60 compared to 30 etc....

          What is the logarithm base?

          Thanks,

          Rik

          1 Reply Last reply Reply Quote 0
          • Dr-Pete
            Dr-Pete Staff last edited by

            It turns out to be a bit complicated, since DA/PA are based on a machine-learning algorithm. Dr. Matt Peters, our resident data scientist, answered a similar question here:

            https://seomoz.zendesk.com/entries/22546573-domain-page-authority-logarithmic

            1 Reply Last reply Reply Quote 1
            • Jeepster
              Jeepster last edited by

              Have you looked here?
              http://www.seomoz.org/learn-seo/domain-authority

              1 Reply Last reply Reply Quote 0
              • 1 / 1
              • First post
                Last post

              Browse Questions

              Explore more categories

              • Moz Tools

                Chat with the community about the Moz tools.

              • SEO Tactics

                Discuss the SEO process with fellow marketers

              • Community

                Discuss industry events, jobs, and news!

              • Digital Marketing

                Chat about tactics outside of SEO

              • Research & Trends

                Dive into research and trends in the search industry.

              • Support

                Connect on product support and feature requests.

              • See all categories

              Related Questions

              • dollarpesa

                Unsolved Share some high authority DA Website

                da authority backlinks

                Share some high authority DA Website. Where can I get backlink for my website.

                Moz Pro | | dollarpesa
                0
              • mlb7

                Removing Domains From Disavow File

                We may have accidentally included the wrong domains in our Disavow file and have since removed most domains leaving the only very highly rated spammy links (using moz's new spam score)in the file. How long can it take for to google to recognise this change?ThanksMike

                Moz Pro | | mlb7
                0
              • NutcrackerBalletGifts

                Items listed based on size - Use "inches" or " " "

                I sell Decorative nutcrackers of various sizes. At this time, I use the term "inches". I was looking at my competitor the other day, and when I did a search on his site, using the term inches did not provide me with a result. I was forced to use ex. "10" nutcracker" instead of "10 inch nutcracker". Is there a preferable usage for seo purposes. Thanks! my site: http://www.nutcrackerballetgifts.com/category/5/10-Inch-Nutcrackers.html his ite: http://www.kurtadler.com/Search?search=10"+nutcracker

                Moz Pro | | NutcrackerBalletGifts
                0
              • CommercePundit

                Why my Domain Authority (DA) is Decreased from 21 to 19?

                Hello, I would like to know how the changes in domain authority is counted by MOZ? Domain Authority for my this domain http://www.grandcrayon.ca/ was 21 and it is decreased to 19 in last week. I have checked the moz report and it shows DA as 19. We already have grandcrayon.ca and we recently redirected our .com domain (http://www.grandcrayon.com also to .ca so all the back links of .com are now showing in webmaster for .ca. So i would like to know the reason behind decrement in DA and is there any connection with redirection of .com domain? How can i increase DA for my website?

                Moz Pro | | CommercePundit
                0
              • Whitespark

                Is there a way to get the domain authority of a subdomain?

                For example, www.storage-mart.com and us.storage-mart.com both show the same DA in OSE. I believe it's the DA of the root domain. How can I compare the DA of the 'www' and 'us' subdomains?

                Moz Pro | | Whitespark
                0
              • anthonytjm

                What do you use for site audit

                What tools do you use for conducting a site audit? I need to do an audit on a site and the seomoz web crawler and on page optimization will takes days if not a full week to return any results. In past Ive used other tools that I could run on the fly and they would return broken links, missing htags, keyword density, server information and more. Curious as to what you all use and what you may recommend to use in conjunction with the moz tools.

                Moz Pro | | anthonytjm
                0
              • coremediadesign

                Meta keywords no longer in use

                Can someone point me to the official article explaining why meta keywords are no longer taken into account by search engines please? I know Moz has indicated that search engines ignore them, but I would like to read a bit more about it - what was the reason behind it and since when.

                Moz Pro | | coremediadesign
                0
              • paulsmithlondon

                Spam Directories creating misleading Authority ratings

                How does the website www.starsdirectory.com.ar get a Domain Authority of 54 and a Page Authority of 61 when Google quite correctly gives it a PR 0? It is clearly a spam directory, which Google has recognised. It is very misleading using OSE or Campaign Management when sites such as these (and there are hundreds more we have found) are skewing the results of competitiors through the use of spam links. Is there no way that SEOMoz tools can identify such spam sites when they create their ratings?

                Moz Pro | | paulsmithlondon
                0

              Get started with Moz Pro!

              Unlock the power of advanced SEO tools and data-driven insights.

              Start my free trial
              Products
              • Moz Pro
              • Moz Local
              • Moz API
              • Moz Data
              • STAT
              • Product Updates
              Moz Solutions
              • SMB Solutions
              • Agency Solutions
              • Enterprise Solutions
              • Digital Marketers
              Free SEO Tools
              • Domain Authority Checker
              • Link Explorer
              • Keyword Explorer
              • Competitive Research
              • Brand Authority Checker
              • Local Citation Checker
              • MozBar Extension
              • MozCast
              Resources
              • Blog
              • SEO Learning Center
              • Help Hub
              • Beginner's Guide to SEO
              • How-to Guides
              • Moz Academy
              • API Docs
              About Moz
              • About
              • Team
              • Careers
              • Contact
              Why Moz
              • Case Studies
              • Testimonials
              Get Involved
              • Become an Affiliate
              • MozCon
              • Webinars
              • Practical Marketer Series
              • MozPod
              Connect with us

              Contact the Help team

              Join our newsletter
              Moz logo
              © 2021 - 2025 SEOMoz, Inc., a Ziff Davis company. All rights reserved. Moz is a registered trademark of SEOMoz, Inc.
              • Accessibility
              • Terms of Use
              • Privacy

              Looks like your connection to Moz was lost, please wait while we try to reconnect.