• majorAlexa

        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.

          Let your business shine with Listings AI
          Moz Local

          Let your business shine with Listings AI

          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

          Unlock flexible pricing & new endpoints
          Moz API

          Unlock flexible pricing & new endpoints

          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
        2770
        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

              • niaokun683807

                Solved How to reduce the spam score for my domain?

                spam score

                My domain  longfeifei.com is for a regular company website and someone sent a lot of external links on different low-quality websites on the internet. Now the score is very high about 75%. If I disavow the unusual links from google search console. Is it possible to reduce the spam score? Is MOZ associated with GOOGLE Data? Thanks,

                Moz Pro | | niaokun683807
                2
              • MrFrisbee

                Automatically Check List of Sites For Links To Specific Domain

                Hi all, Can anyone recommend a tool that will allow me to put in a list of about 200 domains that are then checked for a link back to a specific domain? I know I can do various link searches and use Google site: command on a site by site basis, but it would be much quicker if there was a tool that could take the list of domains I am expecting a link  on and then find if that link exists and if so on what page etc. Hope this makes sense  otherwise I have to spend a day doing it by hand - not fun! Thanks,
                charles.

                Moz Pro | | MrFrisbee
                0
              • Dan-Lawrence

                How long for authority to transfer form an old page to a new page via a 301 redirect? (& Moz PA score update?)

                Hi How long aproximately does G take to pass authority via a 301 from an old page to its new replacement page ? Does Moz Page Authority reflect this in its score once G has passed it ? All Best
                Dan

                Moz Pro | | Dan-Lawrence
                3
              • 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
              • Mionkeybot

                Is there a way to see what keywords users of my site are using to find it online?

                Since Google Analytics no longer shows the keywords used by people to find a site online, does the SEOMoz toolset provide somethng to show this data?

                Moz Pro | | Mionkeybot
                0
              • simonberenyi

                Why are my sub-domains ranking higher than my Root Domains?

                I have just noticed that my sub-domains are ranking higher in Mozrank and Moztrust than the root domain - that seems nuts. Am I doing something wrong?

                Moz Pro | | simonberenyi
                0
              • Caseman

                What Exactly Does "Linking Root Domains" mean??

                What Exactly Does "Linking Root Domains" mean?? And how does it affect your ranking for certain Keywords?? Thanks

                Moz Pro | | Caseman
                57
              • NickEubanks

                How fast can page authority be grown

                I understand that it is easier to rank for a particular keyword given a higher DA score. How fast can  page authority be established and grown for a given keyword if DA is equal to 10/20/30/50? What are the relative measures that dictate the establishment and growth of this authority? Can it be enumerated to a percentage of domain links? or a percentage of domain links given an assumed C-Block ratio? For example you have a website with DA of 40, and you want to target a new keyword, the average PA of the top ranked pages is 30, the average domain links are 1,000, and the average number of linking domains is 250 - if you aim to build 1,000 links per month from 500 linking domains, how fast can you approximate the establishment of page authority for the keyword?

                Moz Pro | | NickEubanks
                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.