What Scale is Warhammer 40k: Your Complete Guide to Miniature Gaming Scales

Warhammer 40k officially uses 28mm heroic scale. But that label conceals real variation across factions, eras, and model types. This guide cuts through the confusion.

Stand a Space Marine next to an Imperial Guardsman and you expect a giant next to a human. On the tabletop, the height difference barely registers. That is not a mistake — it is scale working exactly as Games Workshop designed it, and understanding why makes every buying decision in this hobby clearer.

Quick Facts:

What "28mm Scale" Actually Means

Most hobby scales work as ratios — a 1:72 aircraft model is 72 times smaller than the real thing. Warhammer works differently. The 28mm refers to a figure's height from foot to eye level, not a true proportional ratio and not the top of the head.

Games Workshop calls this an absolute scale: every model, regardless of what it depicts in lore, targets that same 28mm reference point. A Gretchin and a Terminator both measure near 28mm. This is why figures that would be radically different sizes in reality appear close in height on the table.

For a standing human, total height (foot to crown) typically runs 30–32mm, since the head extends roughly 2–4mm above eye level. Keep that distinction in mind when comparing models from different manufacturers.

Heroic Scale: Why 40k Proportions Look Exaggerated

"Heroic scale" is not just branding — it describes a sculpting philosophy built around tabletop readability. At 28–32mm, fine anatomical detail becomes invisible from playing distance. Games Workshop's solution: exaggerate the features that carry the most visual weight.

In practice, that means:

• Heads are roughly 20–25% larger than true anatomy at scale
• Hands and weapons are bulked up for visual clarity
• Armor plates and musculature have deeper, sharper edges for paint contrast

The result reads well at arm's length and holds up under brushwork even for beginners. Compare this to Perry Miniatures or Infinity, which use realistic 28mm proportions — those figures look anatomically precise up close but require more advanced painting to read across a table.

► MY POV: Heroic scale is one of the smarter structural decisions in this hobby. When I painted my first unit of Intercessors, those enlarged pauldrons and helmet surfaces gave me clean, obvious zones to work with. True-scale miniatures reward skilled painters but punish beginners. If you're new and wondering why 40k models feel easier to paint than historical figures — this is why.

Scale Creep: How 40k's Size Has Shifted Since 1987

Warhammer 40k has never been locked at a single exact measurement. The hobby community calls the gradual size increase over time scale creep, and 40k is one of the clearest examples in miniature gaming.

The Timeline

• 1987 (Rogue Trader launch): Models sat near 25mm — small, simple metal figures.
• 1990s: Plastic injection molding improved. Models standardized around true 28mm.
• 2000s–2010s: Sculpts grew more ambitious. Infantry drifted to 29–31mm in practice.
• 2017: Primaris Space Marines launched at 32–35mm — the most visible deliberate scale jump in the game's history.

The Primaris Effect

Primaris Marines are the clearest break point. Games Workshop framed the size increase as lore-accurate — Primaris are a newer, enhanced breed — but the practical result was two distinct size tiers within the same army.

Firstborn (older) Space Marines: 28–30mm. Primaris Marines: 32–35mm. Both are current, both share army lists, and both look noticeably mismatched in a display case. For competitive play, the difference rarely matters. For anyone building a cohesive showcase army, I recommend committing to one generation.

Faction Scale Reference: Who Stands Where

The practical benchmark: Cadian Shock Troops are the standard other miniature companies test their 28mm figures against. When a third-party manufacturer says "compatible with 28mm," they almost always mean "looks right next to a Cadian."

Vehicle Scale: The Deliberate Compromise

Warhammer 40k vehicles are not accurately scaled to their infantry — and this is an acknowledged, intentional design choice.

A lore-accurate Rhino APC built to transport 10 Space Marines in full power armor would be enormous at true 1:56 scale. Placed on a standard gaming table, a correctly sized Rhino would dominate the board and make the game unworkable. So Games Workshop builds vehicles at roughly 1:48 scale: proportional enough at a glance, small enough to fit the table.

The Rhino is the most cited example. At its modeled size, you could not physically fit 10 Marine figures inside it. The hobby community treats this as an accepted convention. For scratch-built terrain and third-party vehicles, 1:48 scale model kits produce the most natural visual result alongside 40k infantry.

► MY POV: The vehicle scale compromise is invisible during play — I have never had an opponent notice or care. It only becomes an issue in display dioramas. Place a Marine "inside" an open-topped vehicle and the proportions break down immediately. Know the limitation, plan around it for display work, and it will not affect your enjoyment of the game.

How 40k Scale Compares to Other Miniature Games

The key point: the number alone does not determine compatibility. A "28mm" Infinity figure and a "28mm" Space Marine look completely different side by side because of proportion style. Always check whether a manufacturer uses heroic or realistic proportions before mixing ranges.

What US Hobbyists Need to Know

The US 40k community supports a large third-party market, which makes scale knowledge directly useful for purchasing.

Terrain: Companies like Mantic Games, Printable Scenery, and TTCombat produce "28mm compatible" terrain. In my testing, this works well with Astra Militarum infantry. With Primaris Marines, doorways and cover can feel tight — size up where available.

3D Printing: Platforms like MyMiniFactory and Cults3D carry extensive 28mm heroic libraries. Quality designers specify proportion style in their listings. If a file only says "28mm" without specifying heroic or realistic, verify with the creator before printing a full unit.

Third-Party Miniatures: Anvil Industry, Wargames Atlantic, and Victoria Miniatures all produce figures explicitly scaled to 28mm heroic — popular choices for US players building custom or budget armies.

The base size factor most guides skip: Games Workshop moved Space Marines from 25mm to 32mm bases around 2015. The model heights stayed similar, but the larger base raises the figure's visual center and makes older and newer Marines look mismatched even when their actual measurements are close.

Common Scale Mistakes Worth Avoiding

Treating "28mm" as a universal standard. Heroic and realistic 28mm figures look wrong together. Check proportion style, not just the number.

Buying true-scale terrain for heroic-scale models. Standard 1:56 doorways look undersized next to Primaris Marines. Size up slightly.

Mixing Firstborn and Primaris in display pieces. The 4–5mm height gap is subtle in a game but visible in a showcase. Pick one generation for a unified look.

Ignoring base thickness. A 5mm base adds 5mm of apparent height. Always account for base depth when comparing models from different manufacturers.

Frequently Asked Questions

What scale is Warhammer 40k officially? 

28mm heroic scale. In practice, many current models measure 30–35mm due to decades of gradual size increases.

Are Warhammer 40k miniatures 28mm or 32mm? 

Both, depending on faction and release era. Cadian Guard infantry sit near true 28mm. Primaris Space Marines run 32–35mm total height.

What does "heroic scale" mean? Proportions are intentionally exaggerated — larger heads, hands, and weapons — to improve tabletop readability and paintability. It is a stylistic convention, not an error.

Can I mix 40k models with other 28mm miniatures? 

Technically yes, but heroic-scale 40k figures look mismatched next to realistic 28mm ranges like Infinity or Perry Miniatures. Within the Games Workshop family, Age of Sigmar terrain and models mix well.

What scale are Warhammer 40k vehicles? 

Approximately 1:48 — deliberately undersized compared to infantry to fit standard gaming tables.

Is 40k compatible with 3D-printed miniatures? 

Yes, if files specify 28mm heroic scale. Verify before printing — files that only say "28mm" may use realistic proportions that look off next to standard 40k models.

Why do older and newer Space Marines look different in size? 

Scale creep. Firstborn Marines measure 28–30mm; Primaris Marines measure 32–35mm. Games Workshop made the shift deliberately in 2017, but the visual inconsistency in mixed collections is real.

Final Word

Warhammer 40k's official scale is 28mm heroic — but what that means varies by faction, release year, and unit type. Human infantry sits near true 28mm; Primaris Marines run 32–35mm; vehicles operate on their own deliberate compromise. The heroic proportion style defines the look of the whole range and explains why 40k models paint and play differently from any realistic 28mm system.

The number matters less than understanding the system behind it. Once you do, buying terrain, mixing third-party models, and building cohesive armies gets significantly easier.

Disclaimer: Scale measurements are based on community documentation and Games Workshop product data. Specifications vary between individual releases. This guide is for informational purposes only.