• Log InLog In
  • Register
Liquid`
Team Liquid Liquipedia
EST 17:51
CET 23:51
KST 07:51
  • Home
  • Forum
  • Calendar
  • Streams
  • Liquipedia
  • Features
  • Store
  • EPT
  • TL+
  • StarCraft 2
  • Brood War
  • Smash
  • Heroes
  • Counter-Strike
  • Overwatch
  • Liquibet
  • Fantasy StarCraft
  • TLPD
  • StarCraft 2
  • Brood War
  • Blogs
Forum Sidebar
Events/Features
News
Featured News
HomeStory Cup 28 - Info & Preview10Rongyi Cup S3 - Preview & Info3herO wins SC2 All-Star Invitational14SC2 All-Star Invitational: Tournament Preview5RSL Revival - 2025 Season Finals Preview8
Community News
Weekly Cups (Jan 19-25): Bunny, Trigger, MaxPax win3Weekly Cups (Jan 12-18): herO, MaxPax, Solar win0BSL Season 2025 - Full Overview and Conclusion8Weekly Cups (Jan 5-11): Clem wins big offline, Trigger upsets4$21,000 Rongyi Cup Season 3 announced (Jan 22-Feb 7)38
StarCraft 2
General
HomeStory Cup 28 - Info & Preview StarCraft 2 Not at the Esports World Cup 2026 Weekly Cups (Jan 19-25): Bunny, Trigger, MaxPax win Oliveira Would Have Returned If EWC Continued herO wins SC2 All-Star Invitational
Tourneys
HomeStory Cup 28 KSL Week 85 $21,000 Rongyi Cup Season 3 announced (Jan 22-Feb 7) OSC Season 13 World Championship $70 Prize Pool Ladder Legends Academy Weekly Open!
Strategy
Simple Questions Simple Answers
Custom Maps
[A] Starcraft Sound Mod
External Content
Mutation # 510 Safety Violation Mutation # 509 Doomsday Report Mutation # 508 Violent Night Mutation # 507 Well Trained
Brood War
General
Bleak Future After Failed ProGaming Career [ASL21] Potential Map Candidates BW General Discussion Potential ASL qualifier breakthroughs? BGH Auto Balance -> http://bghmmr.eu/
Tourneys
[Megathread] Daily Proleagues Small VOD Thread 2.0 Azhi's Colosseum - Season 2 [BSL21] Non-Korean Championship - Starts Jan 10
Strategy
Zealot bombing is no longer popular? Simple Questions, Simple Answers Current Meta Soma's 9 hatch build from ASL Game 2
Other Games
General Games
Nintendo Switch Thread Battle Aces/David Kim RTS Megathread Path of Exile Mobile Legends: Bang Bang Beyond All Reason
Dota 2
Official 'what is Dota anymore' discussion
League of Legends
Hager werken embalming powder+27 81 711 1572
Heroes of the Storm
Simple Questions, Simple Answers Heroes of the Storm 2.0
Hearthstone
Deck construction bug Heroes of StarCraft mini-set
TL Mafia
Mafia Game Mode Feedback/Ideas Vanilla Mini Mafia
Community
General
US Politics Mega-thread Russo-Ukrainian War Thread European Politico-economics QA Mega-thread Things Aren’t Peaceful in Palestine YouTube Thread
Fan Clubs
The herO Fan Club! The IdrA Fan Club
Media & Entertainment
[Manga] One Piece Anime Discussion Thread
Sports
2024 - 2026 Football Thread
World Cup 2022
Tech Support
Computer Build, Upgrade & Buying Resource Thread
TL Community
The Automated Ban List
Blogs
How Esports Advertising Shap…
TrAiDoS
My 2025 Magic: The Gathering…
DARKING
Life Update and thoughts.
FuDDx
How do archons sleep?
8882
James Bond movies ranking - pa…
Topin
Customize Sidebar...

Website Feedback

Closed Threads



Active: 1916 users

Brood War web app to calculate unit interactions

Forum Index > BW General
Post a Reply
1 2 3 Next All
facecsgo
Profile Joined March 2024
12 Posts
Last Edited: 2024-05-17 01:51:42
May 10 2024 15:10 GMT
#1
https://bwcalc.com

I made a web app to calculate hits to kill and time to kill for units at all upgrade levels, including damage modifiers, hp and shield regen, burn damage, unit-specific upgrades and it is extremely accurate.

I'd like to add more things over time if people would use it, like # of medics healing, # SCVs repairing, estimations for splash damage, more buildings, spell damages.

If you have any feedback for changes or think you have found an error, please let me know.

edit May 12 2024: updated to add some unit information and a checkbox to show +/-% changes instead of raw numbers

edit May 13 2024: accuracy example, 2 Dragoons vs 2 carriers, 0.6 seconds or 1.76% variance. Extremely small variance for such a long engagement, units also have +/- a few frame randomness in attack animations: https://i.imgur.com/oXeo3f9.png

edit May 14 2024: added a checkbox for RANDOM miss chance. I'm going to be honest, it's random, like the game engine, which means it has chaotic results. On average it is approximately ~2x hits to kill with uphill miss chance, but honestly it's interesting to see the full range of randomness.

edit May 16 2024: created liquipedia page that is extremely detailed in how the calculations work and the limitations that exist (Wiki)BW Calculator
Psyonic_Reaver
Profile Blog Joined June 2007
United States4341 Posts
May 10 2024 20:03 GMT
#2
This is awesome. Thank you!
So wait? I'm bad? =(
prosatan
Profile Joined September 2009
Romania8517 Posts
May 10 2024 21:36 GMT
#3
Yessirrr
Lee JaeDong Fighting! The only church that illuminates is the one that burns.
MildCocoA
Profile Joined October 2010
Korea (South)129 Posts
Last Edited: 2024-05-11 02:24:19
May 11 2024 02:21 GMT
#4
Thank you. I added it to Liquipedia (Wiki)Tools
[AS]Rattus
Profile Joined March 2017
427 Posts
May 12 2024 08:33 GMT
#5
Arbiter needs 9999 or probably more attacks to kill a 2/3 Carrier.
The more you know
prosatan
Profile Joined September 2009
Romania8517 Posts
May 12 2024 09:15 GMT
#6
On May 12 2024 17:33 [AS]Rattus wrote:
Arbiter needs 9999 or probably more attacks to kill a 2/3 Carrier.
The more you know

And also firebat, who needs the same amount to kill a fully upgraded ultralisk
Lee JaeDong Fighting! The only church that illuminates is the one that burns.
LUCKY_NOOB
Profile Blog Joined June 2013
Bulgaria1513 Posts
Last Edited: 2024-05-12 12:27:38
May 12 2024 12:27 GMT
#7
Nice!

Mischance calculations come to mind as another feature.

Also is this included:

The chance of an "air shot" is 1/256; that is, with the two units on equal elevation (including air units), a ranged unit's chance to hit is 99.609375%.

Keep up the great work! <3 <3 <3
ko-fi.com/luckynoob
facecsgo
Profile Joined March 2024
12 Posts
Last Edited: 2024-05-12 15:17:40
May 12 2024 15:16 GMT
#8
On May 12 2024 17:33 [AS]Rattus wrote:
Arbiter needs 9999 or probably more attacks to kill a 2/3 Carrier.
The more you know


I had to test this one directly before because it broke my calculator.
A no upgrade arbiter cannot kill a 2/3 carrier ever.
Shield regens before arbiter hits. Armor and shield armor upgrades + base armor reduce damage below 0. Since the arbiter hits the shields, it does not deal the minimum hp damage of 0.5.
So the carrier just goes 0 shields to 1 shields to 0 shields and the health bar never takes damage.

Anything that displays “9999” just means >1000 and I stop the calculations, just because it’s kind of meaningless at that point and I don’t want calculations to take forever!
WGT-Baal
Profile Blog Joined June 2008
France3433 Posts
May 13 2024 00:11 GMT
#9
This is seriously amazing, great job!
Horang2 fan
facecsgo
Profile Joined March 2024
12 Posts
Last Edited: 2024-05-13 02:01:01
May 13 2024 02:00 GMT
#10
On May 12 2024 21:27 LUCKY_NOOB wrote:
Nice!

Mischance calculations come to mind as another feature.

Also is this included:

The chance of an "air shot" is 1/256; that is, with the two units on equal elevation (including air units), a ranged unit's chance to hit is 99.609375%.

Keep up the great work! <3 <3 <3


Only problem with miss chance is it adds randomness to the calculation, i.e. every time you calculate it would be different.
Like take Zealot vs Zergling, 3 hits to kill. Would I just 1/256 you press the calculation button and it says 4 hits instead? or always show 3 / 255 * 256 = 3.01 hits to kill?
Maybe there's another way to add it but I'm not sure how to make it make sense.


Separately: I added unit info tables that show some basic info as well as a checkbox that lets you toggle between raw numbers and percent change
I advise you ctrl+f5 on the website to update the formatting as I changed it a bit
Peeano
Profile Blog Joined March 2009
Netherlands5212 Posts
May 13 2024 09:09 GMT
#11
Definitely not bother to include misses into calculations. Just add high ground, tree and regular miss chances as a note.

Btw do we even know if 2 back to back shots (1/256) can be misses? I wouldn't be surprised if Blizz added an exception that it cannot happen. In all my accumulated playing and watching I don't recall seeing it happen.
FBH #1!
facecsgo
Profile Joined March 2024
12 Posts
May 13 2024 13:19 GMT
#12
On May 13 2024 18:09 Peeano wrote:
Definitely not bother to include misses into calculations. Just add high ground, tree and regular miss chances as a note.

Btw do we even know if 2 back to back shots (1/256) can be misses? I wouldn't be surprised if Blizz added an exception that it cannot happen. In all my accumulated playing and watching I don't recall seeing it happen.


This would make a little more sense, but it still isn't an exact calculation since missing is random, so the results could change every time you hit calculate (unless I just say the player misses every other hit).
I do think I heard different doodads have different miss chances but I do not think that's documented anywhere, so I would only do the ~53.125% chance to hit on high ground.
MapleLeafSirup
Profile Joined July 2009
Germany950 Posts
May 13 2024 14:57 GMT
#13
Haha Wraith vs Egg: 9999
facecsgo
Profile Joined March 2024
12 Posts
Last Edited: 2024-05-13 18:21:04
May 13 2024 16:21 GMT
#14
On May 13 2024 23:57 MapleLeafSirup wrote:
Haha Wraith vs Egg: 9999


9999 only means >1000, but I enjoy looking into these so I did.
This actually appears to be an error based on the assumption that Eggs regenerate HP. It appears that Eggs and Cocoons do not regenerate health, in my testing just now, so that is a bug I need to fix. I had never tested it before.

Wraith should deal the games minimum 0.5 damage to an egg, meaning it will kill the egg in 400 hits.

This bug has been fixed

(Not related to the above reply)
Edit: I added an example of the calculation accuracy to the main post, which is also here: https://i.imgur.com/oXeo3f9.png
IntoTheWow
Profile Blog Joined May 2004
is awesome32277 Posts
May 13 2024 23:48 GMT
#15
Pretty cool! Thanks for sharing
Moderator<:3-/-<
facecsgo
Profile Joined March 2024
12 Posts
May 14 2024 23:37 GMT
#16
On May 12 2024 21:27 LUCKY_NOOB wrote:
Nice!

Mischance calculations come to mind as another feature.

Also is this included:

The chance of an "air shot" is 1/256; that is, with the two units on equal elevation (including air units), a ranged unit's chance to hit is 99.609375%.

Keep up the great work! <3 <3 <3


On May 13 2024 18:09 Peeano wrote:
Definitely not bother to include misses into calculations. Just add high ground, tree and regular miss chances as a note.

Btw do we even know if 2 back to back shots (1/256) can be misses? I wouldn't be surprised if Blizz added an exception that it cannot happen. In all my accumulated playing and watching I don't recall seeing it happen.


I added random miss chance checkbox, 136/256 per (Wiki)Damage
It is fully random so results change every single time
Cheesefome
Profile Joined May 2016
314 Posts
Last Edited: 2024-05-15 04:59:09
May 15 2024 04:57 GMT
#17
Wow so cool man!! Love SC community they contribute so much.

Will there ever be an app version instead of a link/browser?
facecsgo
Profile Joined March 2024
12 Posts
May 15 2024 14:54 GMT
#18
On May 15 2024 13:57 Cheesefome wrote:
Wow so cool man!! Love SC community they contribute so much.

Will there ever be an app version instead of a link/browser?


Ironically, I made it a website because I assumed if I released a desktop app that everyone would assume it's malware or something!
I don't really plan to release a desktop app because it'd be a struggle to maintain both, with the website I can push bug fixes really quickly (i.e. like when I found out that I had Eggs and Cocoons regenerating HP, but they do not).
I'm also still intending to add a lot of features over time.
I feel like a Desktop app would just make all of this harder & slower so it's not something I'm interested in doing
LUCKY_NOOB
Profile Blog Joined June 2013
Bulgaria1513 Posts
Last Edited: 2024-05-16 13:52:43
May 16 2024 13:52 GMT
#19
On May 15 2024 08:37 facecsgo wrote:
Show nested quote +
On May 12 2024 21:27 LUCKY_NOOB wrote:
Nice!

Mischance calculations come to mind as another feature.

Also is this included:

The chance of an "air shot" is 1/256; that is, with the two units on equal elevation (including air units), a ranged unit's chance to hit is 99.609375%.

Keep up the great work! <3 <3 <3


Show nested quote +
On May 13 2024 18:09 Peeano wrote:
Definitely not bother to include misses into calculations. Just add high ground, tree and regular miss chances as a note.

Btw do we even know if 2 back to back shots (1/256) can be misses? I wouldn't be surprised if Blizz added an exception that it cannot happen. In all my accumulated playing and watching I don't recall seeing it happen.


I added random miss chance checkbox, 136/256 per (Wiki)Damage
It is fully random so results change every single time


Amazing! Yeah it was a suggestion in the spirit of completeness. Not that it's the most important info in the world but it's a nice touch. <3

I even use Discord from my browser these days. Only point of a program (calling it an app is too new school for my taste lel) is to have extra feature or if Flash forbid the site goes down the service lives on in the community.

I added it to the Build Orders document:

https://docs.google.com/spreadsheets/d/1O0XEPA9ZxqkMsul7UjEt1wotvkBE1drB/edit?pli=1#gid=1989302709

Keep up the great work! <3
ko-fi.com/luckynoob
rtyrt7
Profile Joined August 2018
49 Posts
May 16 2024 19:20 GMT
#20
Really nice job! Thank you!
1 2 3 Next All
Please log in or register to reply.
Live Events Refresh
The PiG Daily
21:40
Best Games of SC
Reynor vs Krystianer
herO vs Rogue
ByuN vs TriGGeR
Maru vs Solar
LiquipediaDiscussion
[ Submit Event ]
Live Streams
Refresh
StarCraft 2
PiGStarcraft429
UpATreeSC 151
ProTech143
JuggernautJason102
StarCraft: Brood War
Shuttle 191
Dewaltoss 100
Dota 2
capcasts99
League of Legends
C9.Mang0174
Other Games
gofns16643
tarik_tv15302
FrodaN6200
summit1g4693
Grubby3368
Beastyqt782
shahzam346
mouzStarbuck332
Pyrionflax305
KnowMe293
Liquid`Hasu283
ToD81
Livibee74
ZombieGrub26
PPMD24
Organizations
StarCraft 2
Blizzard YouTube
StarCraft: Brood War
BSLTrovo
sctven
[ Show 19 non-featured ]
StarCraft 2
• Hupsaiya 83
• RyuSc2 29
• intothetv
• sooper7s
• Migwel
• AfreecaTV YouTube
• LaughNgamezSOOP
• IndyKCrew
• Kozan
StarCraft: Brood War
• blackmanpl 1
• STPLYoutube
• ZZZeroYoutube
• BSLYoutube
Dota 2
• masondota2817
• WagamamaTV522
League of Legends
• Nemesis7578
• Doublelift3901
Other Games
• imaqtpie1733
• Shiphtur229
Upcoming Events
Korean StarCraft League
4h 9m
HomeStory Cup
13h 9m
Replay Cast
1d 1h
HomeStory Cup
1d 14h
Replay Cast
2 days
Replay Cast
3 days
Wardi Open
3 days
WardiTV Invitational
4 days
The PondCast
5 days
WardiTV Invitational
5 days
Liquipedia Results

Completed

Proleague 2026-01-29
OSC Championship Season 13
Underdog Cup #3

Ongoing

CSL 2025 WINTER (S19)
KCM Race Survival 2026 Season 1
Acropolis #4 - TS4
Rongyi Cup S3
HSC XXVIII
IEM Kraków 2026
BLAST Bounty Winter 2026
BLAST Bounty Winter Qual
eXTREMESLAND 2025
SL Budapest Major 2025
ESL Impact League Season 8

Upcoming

Escore Tournament S1: W7
Escore Tournament S1: W8
Acropolis #4
IPSL Spring 2026
uThermal 2v2 2026 Main Event
Bellum Gens Elite Stara Zagora 2026
LiuLi Cup: 2025 Grand Finals
Nations Cup 2026
IEM Rio 2026
PGL Bucharest 2026
Stake Ranked Episode 1
BLAST Open Spring 2026
ESL Pro League Season 23
ESL Pro League Season 23
PGL Cluj-Napoca 2026
TLPD

1. ByuN
2. TY
3. Dark
4. Solar
5. Stats
6. Nerchio
7. sOs
8. soO
9. INnoVation
10. Elazer
1. Rain
2. Flash
3. EffOrt
4. Last
5. Bisu
6. Soulkey
7. Mini
8. Sharp
Sidebar Settings...

Advertising | Privacy Policy | Terms Of Use | Contact Us

Original banner artwork: Jim Warren
The contents of this webpage are copyright © 2026 TLnet. All Rights Reserved.