How Your Damage is Actually Calculated in Raid Shadow Legends


How your Damage is actually calculated in Raid: Shadow Legends


In this article, we are going to break down the maths that goes into your damage output in Raid Shadow Legends so that you can have an understanding of how to output the most amount of damage from your champions.


This excludes certain champions who’s multipliers are based on multiple base stats, and also excludes Enemy Max HP damage.

This is the formula for how damage is really calculated.

Total ATK (or HP or DEF for HP or DEF champions) x Skill Multiplier x Increase Damage from Books x Crit Multiplier x Mastery Bonuses x Chance of Affinity Bonus x Buffs x Passives x Defense Mitigation

  • Total Attack = The total attack stat shown on your Champion page, any attack gained from an aura is also accounted for here, so x% of base Attack + shown total attack.
  • Crit Multiplier is 100% + Crit Damage % assuming you always crit.
  • Skill Multiplier is looked up from a Data Mined Source
  • Increase damage provided by books is found on the ability description
  • Buffs (example 50% Increased attack – 60% Increased Defense)
  • Passives such as Bad-El’s 20% increased damage to enemies under poisons

Above is the total formula, the Defense Mitigation is a little harder to explain, so let’s focus on the pre-mitigated damage breakdown.

Total Attack x (1 + Crit Damage%) x Skill Multiplier With Books x Mastery Effects x Buffs, Passives, Affinity Multipliers


From this formula, it is clear that books and masteries are of significantly more value than previously anticipated.

For example, for a champion with 250% damage, a 10% Damage increase from a skill book is 1.1 x the above formula.

Whereas +10% Crit Damage is only turning your crit multiplier from 3.5 = (1 + 250%) to 3.6 = (1 + 260%) which is only a 3.6/3.5 = 2.8% increase in damage.

For example, with numerical values:

Let’s take Kael and his A2 – Acid Rain – 100% Crit rate vs Void Affinity.

Kael has 1,200 base attack and his A2 has a multiplier of 4.65 x ATK and can be booked for 20% more damage.

If you build your Kael with 3,000 attack and 180% Crit Damage – No masteries, his damage would be:

3,000 [Total Attack] x 2.8 [Crit Multiplier = 1 + Crit Damage % / 100%] x 4.65 [Skill Multiplier] x 1.2 [Additional Damage from Books]

3,000 x 2.8 x 4.65 x 1.2 = 46,872 (Damage before Mitigation)

Now lets say, you roll an item and it gains +5% attack
5% of his base attack is +60 attack so his new damage breakdown is:

3,060 x 2.8 x 4.65 x 1.2 = 47,810

Instead of that +5% attack, let’s compare +5% Critical Damage, which changes the Critical Multiplier to 2.85 instead of 2.8, his new damage would then be

3,000 x 2.85 x 4.65 x 1.2 = 47,709


5% C.Dmg gained us 837 damage
5% Attack gained us 938 damage

Now as a comparison – instead of adding stats, we will add the 5% damage gain from Heart of Glory mastery (when attacking with full hp)

3,000 x 2.8 x 4.65 x 1.2 x 1.05 = 49215.6
So a 5% Damage mastery caused a 2,343 gain in overall damage.


How do buffs/debuffs affect this?

Just as examples:

A 50% Increase attack buff, would further increase the total attack value by 50%
Bad-El’s passive is a straight 20% increase on this damage
25% Weaken debuff on the enemy, is a straight 25% increase on this damage.

In this case with Kael, it’s clear +5% Attack is better than +5% Crit Damage. With 180% Crit Damage, the point at which Crit Damage and Attack are equally valuable is when Kael has 2.8 x 1,200 Attack or 3,360 Attack.



The perfect build is to aim for the ratio between Total Attack to Base Attack to be 1+ Crit Damage % / 100%

The damage from booking a champion likely will increase damage more than adding more base stat to your champion.



  1. Tiberius84 January 9, 2021 at 5:14 pm

    Hey HH team, love this stuff and thank you so much for mining this from the game and making it digestible for the community.
    The work you have been doing recently completely eclipses the “improvements” Plarium have been making and has increased my enjoyment of the game no end!
    Keep up the good work!
    P.s. on the youtube vid HH said there was a download link here to get the tool/spreadsheet he was using. I can’t see it, am I being stupid?

  2. Crashs January 9, 2021 at 5:48 pm

    hey peeps, where do I find this tool for damage calculate?

    • sully6262 January 9, 2021 at 6:14 pm


    • Raidernation433 January 12, 2021 at 4:27 pm

      I can’t find the link either? Any luck?

      • Phixion January 12, 2021 at 4:49 pm

        its in the member menu

  3. Magmago January 9, 2021 at 6:09 pm

    Interesting watch.

    Correct me if I’m wrong here, but
    Getting Dracomorph (base 1520 ATK) from 1520 ATK to 3040 ATK doubles his damage.
    Getting Fu-Shan (base 1443 ATK) from 1443 to 2886 ATK doubles his damage.

    In essence, champions with lower base attack, are actually easier to scale? At least if you have any flat stat increasements on your gear. And therefore a low base attack on an attack champion is actually a good thing?

    • HellHades January 9, 2021 at 6:14 pm

      In a way yes, but also consider % chests scale higher bases faster. So it works in reverse

      • Magmago January 9, 2021 at 6:20 pm

        Higher base ATK does scale higher with ATK%, yes.
        But from what I’m seeing, getting high ATK doesn’t matter, only how high your ATK is compared to the base.

        So if 2 champions both find +150% ATK and +1000 flat ATK from gear, the champion that has the lower base will now have more ATK compared to their base, no?

  4. sully6262 January 9, 2021 at 6:23 pm

    The tool for this article is listed under premium membership, damage efficiency tool. A more intuitive place to put it is in the Tools section, in this article. Just sayin’.

    • sully6262 January 9, 2021 at 8:41 pm

      Or put it in both places. Or link it from here. Make it infinitely discoverable.

  5. sully6262 January 9, 2021 at 8:29 pm

    I found one error in the tool. Mountain King is listed as an attack not an HP DPS toon in the data lookup table. I used this to increase damage on my top 3 DPS tunes by 14%, 18%, and 13%. Huge win!

    Also, the HP damage calculator must be different than the other classes. Otherwise, my Mountain King would be doing 20 times as much damage as Trunda, which I know is not true.

    • DerpyBossGamer January 10, 2021 at 6:41 pm

      Mountain King’s hp multiplier is 30% of his hp while his a1 attack multiplier is 1x attack. He scales way more off of hp and it is destructive to you to build any attack over hp on him.

  6. Stormshadow January 9, 2021 at 8:39 pm

    call me a fruit…but i cant find the place to download that tool

    • retroraver January 9, 2021 at 10:25 pm


      • Phixion January 9, 2021 at 10:31 pm

        its under the membership section – dont need to be premium just a free user :) check the drop-down

        • Indy Jonez January 18, 2021 at 2:31 pm

          The tool itself is there, but it can’t be downloaded.

          • Phixion January 18, 2021 at 3:23 pm

            can you send me a screenshot with the live chat I will look at it for you

          • jay7one January 26, 2021 at 1:14 pm

            Same issue, were you able to find how to download the spreadsheet?

  7. sully6262 January 9, 2021 at 8:41 pm

    This stuff is awesome!

  8. FrostyWarmonger January 9, 2021 at 10:07 pm

    Great video and tool. Amazing work! Cheers!

  9. Fife_USMC January 10, 2021 at 6:50 am

    Thanks for all the hard work. Your team has taken this game tithe next level. Well done!

  10. GreyHeir January 11, 2021 at 12:01 am

    I’m a common member and I’m logged in. When I download the sheet it always says View Only. I can’t input anything?

    • Brentielal January 11, 2021 at 6:07 am

      Geyhair, you have to go to File, then save it, then reopen it, then you can use it.

  11. db2_Gorilla January 11, 2021 at 12:09 am

    I’ve noticed an issue with Kael on the damage efficiency excel sheet..base attack showing as Zero, which is obviously not correct? Looks like a typo in the Damage Type section? Your thoughts?

  12. Brentielal January 11, 2021 at 6:01 am

    Geyhair, you have to go to File, then save it, then reopen it, then you can use it.

  13. January 11, 2021 at 11:15 am

    what about Defence based champions and HP, is is also calculated according to Attack ?

  14. meldon January 11, 2021 at 4:58 pm

    Hello and thank you for this amazing tool, I have just 1 question. Does the tool take into account 50% atk buff? For example my Trunda is 5000 attk and 250c.dmg – the tool says I should add more atk but with the atk buff she has 7500atk and then the tool says opposite. So if I want to find the best value should I put into the calculator her ATK after the 50% ATK buff? And if so, would it be possible to add this option in the calculator? Thank you very much for your help.

    • HellHades January 11, 2021 at 5:14 pm

      50% atk up actually make no difference as it increases your base by 50% and actual atk by 50% which means the atk ratio hasn’t changed and therefore sweet spot hasn’t changed

  15. HisChild January 12, 2021 at 8:56 pm

    The calculation for Kael isn’t working. It shows “0” for his Primary Stat when I pull him up.

  16. david blanchard January 13, 2021 at 12:09 am

    good job to give a first feeling what stat to improve first. The formula in the sheet is correct for all champions where damages are based on one single stat but not accurate for all champions having damages based on two stats like (ATT+HP or ATT+DEF…). In such situations the right calculations would need to consider the multipliers in formula and the current value from the second stat. In these dual cases the sheet is pessimistic with the effect of crit damage vs the main stat considered from hero type based and conclude to improve base stat over crit dmg a bit too much. This is the case with Mountain King as current example in the sheet

  17. LordRenyor January 13, 2021 at 10:10 pm

    The first video talks about a three part series. I watched the damage and mitigation parts, but cant find the specialists parts regarding Seer and Royal Guard. Anyone have a link?

  18. Deathbymistake January 14, 2021 at 2:20 pm

    On kael there is a ) on the atk line I.e. “ATK)” remove the “(“ and this will fix the error. Your need to do this in the data.

  19. MadMatze79 January 16, 2021 at 1:59 pm

    Am I blind or something, but I can’t find a dowload for that file.

    • HellHades January 16, 2021 at 2:05 pm

      its embedded on the membership dropdown

  20. john_trickster January 17, 2021 at 11:57 am

    Great video man, great explanation u gave out there, love the math behind. Great job on all your work on this mate!!! Greetings from Romania ;)

  21. Dark_saber January 20, 2021 at 1:03 am

    HH, I love your content. Thanks for doing all this hard work. I am confused about damage multipliers though. If you look at Acolyte, he has a 6.3 bonus for his A2, but it is listed as “average” or something like that, while Ogryn Jailer has a 6*ATK, and he is listed as godlike. And Acolytes damage books higher. I read your explanation of damage, but am I missing something?

    • jekoh January 23, 2021 at 12:59 pm

      All multipliers and all addition of extra % are calculated from base stat of the champion.
      Ogryn jailer has a base ATK of 1299, so nake he will hit for 6 * 1299 = 7794
      Acolyte has a base ATK of 749, so nake he will hit for 6.3 * 749 = 4719
      you see the big difference
      you cannot base your choice only by having a look at multipliers alone. you have to look at the base stat, to look if the champ is not also ignoring part of ennemy defense when he hit as a specificity of his ability, and if he is hitting several time with the same ability

  22. Legion_X February 6, 2021 at 3:50 pm

    Thanks so much! This tool really has helped me tremendously.

    • Phixion February 6, 2021 at 3:53 pm

      You are welcome mate :) glad you liked it

  23. HisChild February 7, 2021 at 9:58 pm

    I understand what the base is for HP, ATK, and DEF, but I have no idea what to use for base for support Champions.

    • Phixion February 8, 2021 at 1:19 pm

      Have a look at what their attacks scale off but building high speed and tanky (High Def and HP) is a solid start for your support champions.

  24. […] How Damage is Calculated […]

  25. Turbozzz March 18, 2021 at 8:42 pm

    HH, I wish you’d add another thing to your champs and that being whether the champ needs crit rate or not or maybe do a video to show us that don’t know how to determine if a champ needs crit rate or not. thanks and I love all the content.

  26. Nny April 7, 2021 at 3:16 pm

    where is the Damage Efficiency Tool now?
    not under the membership sectionanymore and under the tools section i don’t find it either :s

    • ecg38 April 11, 2021 at 7:06 pm

      I’m having the same issue

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