How reputation scores are calculated - the details explained with simple math

last year
49 in steemit

I couldn't find a really good explanation of reputation, so I read the code, and here's what I discovered.

Simplified vs. Raw scores

The score displayed on your Steemit profile is not the actual value stored in the Steem blockchain, but a simplified version. The scores on profile pages range from a minimum of roughly -25 to maximum of around 75, with newly-opened accounts placed exactly in the middle at 25. The raw scores on the blockchain, however, are actually values in the millions, billions, or even trillions (and these can also be positive or negative).

Simplified scores are shown on Steemit profiles, for example here: steemit.com/@username. Raw scores can be found on steemd.com/@username, note the slightly different domain names there. On steemd.com scroll to the bottom row of the first data box, where it says "Reputation", you'll likely see a number in the billions.

Here comes the math

Numbers in the billions are good for computers to do lots of complex math and fine tuning, but they're not easy for humans to read, hence the simplifed version shown on profile pages. Here is the formula for the simplification:

  • Take the log base 10 of the raw score
  • Subtract 9
  • Multiply by 9
  • Add 25
  • Round down to the nearest integer

So a raw score of 26,714,311,062 becomes a simplified score of 37.

Actually, it's a little more complicated than that, but this is a good summary. I'll leave the extra details out for now, because I want to keep this simple. Scores in the lower end are normalized to 25. It takes a little while for newly-registered users to move off 25, but once you finally get to 26 or above then the formula described above is valid.

This is a snippet of the actual code used by the system. It should make sense to most programmers:

If you want to read and decipher the exact math, see the code in GitHub on the following page. Look at the last section, beginning "export const repLog10".

https://github.com/steemit/steemit.com/blob/master/app/utils/ParsersAndFormatters.js

Tracking your score increases

As mentioned, for new users the simplified reputation score is always 25, and it stays there for a while even if you post and comment a few times. Only once your raw score exceeds around 1,300,000,000 will you finally move up to a simplified score of 26. These are aproximate rounded numbers matching simplified scores to raw scores:

  • 26 = 1,300,000,000
  • 27 = 2,000,000,000
  • 29 = 3,000,000,000
  • 31 = 5,000,000,000
  • 34 = 10,000,000,000

Note that buying Steem or Steem Power does not increase reputation. Only posting, commenting, and curating will increase your rep. So if you'd like to see your reputation increase (and thus your curation power) the secret is to get engaging! Post and comment with some high-quality and original content.

Further details

While studying this, I also found the following post by @dantheman helpful. It doesn't quite cover the details I've described above, but it provides other useful info about how reputation works:

https://steemit.com/steemit/@dantheman/brief-update-on-reputation-score

Also note, it's possible these reputation calculations could change at any time. So if you've Googled and are reading this some time in the future, take care to go back to that GitHub page and check the code again.

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Sort Order:  trending
67
  ·  last year

Great info, I have been looking for this! I will be linking to this article in the Official Steemit FAQ.

If possible, could you do another post showing examples of how a person's score would be affected in particular scenarios? For example​:
If someone with X amount of Steem Power and X reputation score likes my post, how much will my reputation score increase?

https://steemit.com/steemit/@shenanigator/official-steemit-faq-rough-draft-your-edits-are-needed

Also, based on the math you lay out in this post, I think I had some misinformation in my rough draft that I linked. I said:

It uses a log10 scale, meaning:
A score of 30 is 10x better than a score of 20
40 is 10x better than 30
50 is 10x better than 40, and so on

If that is, in fact, wrong, can you tell me what would make it correct?

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49
  ·  last year

I think that's correct. Dan said roughly the same thing in his post that I link at the bottom of my article, and I'm sure he knows better than me.

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51
  ·  7 days ago

very interesting calculation! thank you for this! A bit frustrated how you got that amount of vote, life is really unfair! tsktsk

51
  ·  2 months ago

thanks

62
  ·  last year

Thanks for posting and explaination to another piece of the crazy Steemit puzzle.

68
  ·  last year

I am begging everyone who cares about steemit to stop saying "Quality Content". It is bullshit. Everyone is acting like we are in college. It isn't about high quality content there are thousands of posts a day. Very high quality that get a few votes. That is a problem. Quit telling people it is there writing it isn't good enough when it doesn't matter.

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49
  ·  last year

You have a point, to a certain extent. People who already have a high reputation seem able to post junk and still get it upvoted. Whereas those with low reputation can post quality and it'll be ignored. I think the secret is to study the system closely, work it, and gradually build your reputation up. Then, once you have your rep, you can post your quality content and it will continue to do well. In summary, it's a matter of pulling yourself up with your own bootstraps. It's not easy, but then, it's not necessarily meant to be.

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68
  ·  last year

Agreed, my advice is... try to get noticed. (Without offending everyone) lol. Keep Steeming

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40
  ·  2 months ago

I agree with this point. As a newbie it is harder to get into this.
I guess I will try to fight my way to the top :)
But yeah Followers are a problem, some people post and get so many upvotes even if it is a small update of a Crypto Coin or something.

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44
  ·  3 days ago

I keep hearing how hard it is for newbies. I'm new and on my second day I have a rep of 41. I have three blog post with 15 votes and 25 comments. I also left 18 comments. I'm set to make $15 SBD at this point which I think is pretty decent considering it's just day two. Maybe it's beginners luck but I think content (and the way you share it)
may have something to do with it. Nothing good comes easy. Push yourself to be a better author and marketer.

46
  ·  last year

This is a great article! It's by far the most informative explanation of the reputation system that I've come across. The link for the raw reputation information was great.

It's been so frustrating being stuck at 33 for my reputation! Have to keep working on it :).

54
  ·  11 months ago

This post has been linked to from another place on Steem.

About linkback bot. Please upvote if you like the bot and want to support its development.

50
  ·  3 months ago

That's more or less simple explanation. I finally got to know it. Thanks a ton :)

(Sad to discover there are no more posts in your profile :( )

42
  ·  2 months ago

Awesome - makes total sense. @digitalnotvir thanks for sharing this. followed

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42
  ·  2 months ago

Nevermind - as of 06/15/17 @digitalnotvir is a dead account. :(

35
  ·  2 months ago

So this is really interresting. Thanks a lot for this post, I'm new here and this made me understand a lot better how reputation works.

68
  ·  last year

Thank you for the information on Reputation Scores. It is good to know how they are calculated.

52
  ·  2 months ago

Thanx for writing about this. Was wondering more about this.

25
  ·  2 months ago

Very important and critical piece of information to note here is the fact that Steem or Steem Power will not increase your reputation. Only posting, commenting, and curating will increase your rep, so what does that mean ??? It means get social my friends.

46
  ·  2 months ago

Great information

65
  ·  2 months ago

Thanks, very nicely explained, a bit clear.

56
  ·  last month

Cool info, this is what I need :)

29
  ·  20 days ago

How many votes would u need roughly to go form 25 to 26?

39
  ·  13 days ago

Thanks for sharing!

38
  ·  13 days ago

.. and judging by how little you've earned from this great article their reputation and rewards system is clearly flawed.