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Basically, we all know the 10 foot estimates for Primarch heights give or take some inches depending on Primarchs.

So what would be the low-end?

The low end height for the HH series primarchs is still probably too tall. Of course since even before the HH novels the alpharius siblings have always been able to switch places with their legionnaires so they’d several inches over 210cm / seven feet. Which is pretty intimidating for a regular sized marine.

https://www.reddit.com/r/nba/comments/3rz2tr/boban_marjanovic_enters_the_game_tyler_hansbrough/

Alpharius and Omgeon can pass for tall members of their Legion but the Alpha Legion are noted as being particularly tall. I would say that Alpharius and Omegon are probably around 8'. Alpharius is derogatorily called "little" by some of the other Primarchs so it is probable that they stand around 10' tall.

The cover of "Unremembered Empire" shows both Roboute and Sangiunius being roughly twice the height of normal humans which would but them close to 12'. The Khan is noted as being one of the tallest so probably exceeds 12'. Magnus seems to be around 15'.

Angron is also depicted as being one of the shorter Primarchs although this is partly because he is hunched and stooped due to the constant pain of the Butchers Nails.

 Karhedron wrote:
The cover of "Unremembered Empire" shows both Roboute and Sangiunius being roughly twice the height of normal humans which would but them close to 12'. The Khan is noted as being one of the tallest so probably exceeds 12'. Magnus seems to be around 15'.

I take scale on that cover about as seriously as I take scale on a Byzantine tapestry.

 Karhedron wrote:
Alpharius and Omgeon can pass for tall members of their Legion but the Alpha Legion are noted as being particularly tall. I would say that Alpharius and Omegon are probably around 8'. Alpharius is derogatorily called "little" by some of the other Primarchs so it is probable that they stand around 10' tall.

for you or me, five inches is a huge jump in height. Alpharius being "little" doesn't mean that the primarchs are two feet taller, when there's nothing say it's an entire two feet and being eight inches taller would be enough to call someone little.

Primarch scale is ridiculous anyway. The bigger is better psychology is for Orks, not humans....

I'd go with the original marine height, which was 7-7.5 feet tall and work from there.

6" Catachan
7" marine
8" primaris
8" custodes
8"-10" primarchs

With margins of error for all of +/- 6 inches (short marines at minimum 6'6", tall at 7'6", short primaris at 7'6", tall at 8'6" etc).

I just disregard any scale measurements I read and substitute my own. I like to think of marines as being about 6'5, 180-200kg, unarmoured, so about 7' in armour, then put the primarchs about a head taller. I correlate it to the primarch models, against TRUE SCALE marine models, not the tiny heresy or pre primaris marines. In my head primarchs arent much taller than terminators.

Hellebore wrote:
Primarch scale is ridiculous anyway. The bigger is better psychology is for Orks, not humans....

I'd go with the original marine height, which was 7-7.5 feet tall and work from there.

6" Catachan
7" marine
8" primaris
8" custodes
8"-10" primarchs

With margins of error for all of +/- 6 inches (short marines at minimum 6'6", tall at 7'6", short primaris at 7'6", tall at 8'6" etc).

Where did you read 8’ primaris? I am under the impression that either Dark Imperium gives them 7’6” average, or comparing models would indicate they’re six inches taller than what we know are 210cm or 7ft marines.

Among humans, being four inches over average height is significant, it could be a whole standard deviation. Jumping in height by units of whole feet is bizarre.

This is why I enjoy Invader Zim where they lampoon this sort of thing with their Tallest.

Hellebore wrote:
Primarch scale is ridiculous anyway. The bigger is better psychology is for Orks, not humans....

I'd go with the original marine height, which was 7-7.5 feet tall and work from there.

6" Catachan
7" marine
8" primaris
8" custodes
8"-10" primarchs

With margins of error for all of +/- 6 inches (short marines at minimum 6'6", tall at 7'6", short primaris at 7'6", tall at 8'6" etc).

The Catachan would likely be taller than the baseline Human average (5'10" to 6' for modern Human males). They are also depicted as being ripped and abnormally strong, causing some to consider them to be borderline abhuman. Hence the nickname "Baby Ogryns".

As for the Primaris Marines, it's difficult to tell without a solid comparison image based on averages. The average Firstborn Marine is 7' 6". The Primaris is at least a head taller than old school Marines. So, I'm guessing a ballpark of 8' to 8' 5", with 7' 10" being the absolute minimum.

The Custodies average a hair over nine feet, based on blurbs in lore and artwork (going by the Astartes average of 7 feet, six inches)

The Primarchs were all over the damned place. It's made worse by the fact that Magnus could psychically change his height like the Emperor (who may or may not have settled on 11' unless he needed to change for whatever reason).

 oldravenman3025 wrote:


As for the Primaris Marines, it's difficult to tell without a solid comparison image based on averages. The average Firstborn Marine is 7' 6". The Primaris is at least a head taller than old school Marines. So, I'm guessing a ballpark of 8' to 8' 5", with 7' 10" being the absolute minimum.

The Custodies average a hair over nine feet, based on blurbs in lore and artwork (going by the Astartes average of 7 feet, six inches)

The Primarchs were all over the damned place. It's made worse by the fact that Magnus could psychically change his height like the Emperor (who may or may not have settled on 11' unless he needed to change for whatever reason).

The thread is lowest end estimates for primarchs. There are codexes that day marines average 7ft even so if you’re estimating off marines you have to use 7’

Where does it say 7’6” by the way? I’ve never seen that. Not that it’s important, because the thread is low-end estimate.

Nurglitch wrote:
This is why I enjoy Invader Zim where they lampoon this sort of thing with their Tallest.

I approve of this reference, Inquisitor Dib.

pelicaniforce wrote:

 oldravenman3025 wrote:


As for the Primaris Marines, it's difficult to tell without a solid comparison image based on averages. The average Firstborn Marine is 7' 6". The Primaris is at least a head taller than old school Marines. So, I'm guessing a ballpark of 8' to 8' 5", with 7' 10" being the absolute minimum.

The Custodies average a hair over nine feet, based on blurbs in lore and artwork (going by the Astartes average of 7 feet, six inches)

The Primarchs were all over the damned place. It's made worse by the fact that Magnus could psychically change his height like the Emperor (who may or may not have settled on 11' unless he needed to change for whatever reason).

The thread is lowest end estimates for primarchs. There are codexes that day marines average 7ft even so if you’re estimating off marines you have to use 7’

Where does it say 7’6” by the way? I’ve never seen that. Not that it’s important, because the thread is low-end estimate.

Seven feet, six inches in a standard Mk. VII suit is what I usually go by, since Space Marines are rarely seen in the field without their armor. And I've seen it mentioned various places over the years (none which seem to agree 100% one way or another). Seven feet is the average height of a bog standard Astartes out of armor. Or, at least, that's the mostly agreed upon ballpark figure. I've seen estimates ranging from 6'11" to 9'. Based on lore and artwork, 7 feet and 7' 6" are reasonable averages, since a Space Marine's awesome size has more to do with bulk than height.

Lemun Russ looks Space Marine sized to me:

I reckon they should be the same size as normal space marines. No need for them to be bigger, that is just a weird in joke I reckon.

Space Marine at 7' out of armor to 7'6" in? Platform shoes? 2" of boot sole and 4" of helmet crest? 6" additional seems a tad high.

The old drawing has them at 7 in armor, although he wasn't quite standing straight.

 oldravenman3025 wrote:
I've seen estimates ranging from 6'11" to 9'. Based on lore and artwork, 7 feet and 7' 6" are reasonable averages, since a Space Marine's awesome size has more to do with bulk than height.

you said you've seen estimates starting at 6'11", so you say the low-end estimate is 7'6". that's weird.

Space Marine at 7' out of armor to 7'6" in? Platform shoes? 2" of boot sole and 4" of helmet crest?

How high do you think a power armored sole would be? an inch? an inch and a half? Either you're talking about something as thick as a normal combat boot sole but that has to absorb the weight of >600lbs of marine, or youre getting very close to if not more than two inches.

There's got to be an active cushioning or suspension type of system in there, especially for the stealthier models. A 6'10" mortal strongman is 320, add superdense marine bones and muscles, a ceramite armor with a nuclear power source, and heavy bolter with hundreds of rounds; yeah I think the boots have to be 2.3 or more inches in the sole. I think you'd be getting away with something if the boots added as few as two inches.

Which would mean that the seven feet in armor Jes Godwin diagram would be 6'7" or so out of armor, which honestly I'm fine with since he'd still be able to beat up taller humans pretty darn well, being a space marine and all.

pelicaniforce wrote:
Which would mean that the seven feet in armor Jes Godwin diagram would be 6'7" or so out of armor, which honestly I'm fine with since he'd still be able to beat up taller humans pretty darn well, being a space marine and all.

Besides that is what I think makes the Space Marines impressive - they've been improved in various ways to be much more durable and powerful than normal humans but they can still pass for human. The whole process is less impressive if they for some reason have to be nine-foot monsters, not to mention that would make them as large as a (small) Ogryn but much weaker...