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Age of Sigmar Base Sizes Guide | All Factions & 4th Edition Chart

Last updated: June 2026. Base sizes reflect Games Workshop's current Age of Sigmar 4th Edition Battle Profile cards. Battlescroll FAQs occasionally adjust specific units — always check the latest version on the Warhammer Community site before a tournament.

Every Age of Sigmar base size for every faction, in one chart. Quick-reference tables for Order, Chaos, Death, and Destruction — plus a centerpiece characters table for named heroes like Archaon, Alarielle, and Nagash.

Getting the right base size matters. In Age of Sigmar, the base controls movement distance, coherency, line of sight, and combat range. Tournament organizers enforce official base sizes, and even in casual games it keeps things fair and your army looking sharp.

This guide covers the four Grand Alliances — Order, Chaos, Death, and Destruction — with each faction listed and the base sizes their units actually use. If your model came with a base in the box, that is the official size. The Battle Profile card in your Battletome (or the free Warhammer app) is the canonical source per unit.

LITKO manufactures precision laser-cut miniature bases in every standard Age of Sigmar size — round and oval, in clear acrylic, plywood, and with magnetic bottoms. Need a size we don't stock? The LITKO BaseMaker tool lets you order custom dimensions cut to spec.

Age of Sigmar Base Sizes — Quick Reference Chart

Age of Sigmar uses round and oval bases, with the same diameters as Warhammer 40K. Many sizes overlap because Chaos Daemons and several other factions cross between the two systems. The chart below covers every base size used in current 4th Edition AoS, what unit types use it, and common examples.

Base Size Unit Type Example Units Shop at LITKO
25mm Round Battleline, Hordes, Light Infantry Clanrats, Stabbas, Deathrattle Skeletons, Chainrasps, Namarti Thralls, Bloodreavers, Marauders
32mm Round Elite Infantry, Standard Heroes Stormcast Vindictors, Blood Warriors, Witch Aelves, Plaguebearers, Bestigors, Tzaangors, Pink Horrors
40mm Round Heavy Infantry, Smaller Monsters Liberators, Annihilators, Blightkings, Hearthguard Berzerkers, Skullreapers, Crypt Ghouls (large), Spirit Hosts
50mm Round Monstrous Infantry Mournfang Pack, Crypt Horrors, Vargheists, Kurnoth Hunters
60mm Round Large Heroes, Small Monsters Frostheart Phoenix, Dankhold Troggboss, Varghulf Courtier, Knight-Vexillor on Dracoline
75x42mm Oval Cavalry Dracothian Guard, Chaos Knights, Hexwraiths, Black Knights, Demigryph Knights, Dawnriders
90x52mm Oval Large Cavalry, Daemonic Cavalry, Small Monsters Gore-Gruntas, Bloodcrushers, Mighty Skullcrushers, Plague Drones, Seekers of Slaanesh
60x35mm Oval Specialty Cavalry Sekhar Fang of Nulahmia; legacy and conversion cavalry. (Note: current Blood Knights kit ships on 75x42mm.)
105x70mm Oval Treelord-class Monsters Treelord, Treelord Ancient, Spirit of Durthu
100mm Round Greater Daemons Keeper of Secrets, Lord of Change, Great Unclean One, Be'lakor, Morathi-Khaine
120x92mm Oval Centerpiece Monsters Bloodthirster, Terrorgheist, Zombie Dragon, Stonehorn Beastriders, Thundertusks, Mortarchs on Mount (Nagash uses 130mm round), Katakros
130mm Round Behemoths Nagash, Glottkin, Mortis Engine
160mm Round Apex Centerpieces Archaon the Everchosen, Alarielle the Everqueen, Megaboss on Maw-Krusha (Gordrakk)
170x105mm Oval Largest Mounted Heroes Lord-Celestant on Stardrake, Drakeseer, Karazai the Beast

Source of truth: Games Workshop publishes a free Battlescroll FAQ for each season that lists every Age of Sigmar unit's official base size. Download the latest from the Warhammer Community site, or check the unit's Battle Profile card in the Warhammer app. If the box says one size and the FAQ says another, the FAQ wins for tournament play.

Browse All Age of Sigmar Compatible Bases

Age of Sigmar 4th Edition — What Changed for Bases

Games Workshop launched Age of Sigmar 4th Edition in July 2024 with the Skaventide box. The good news: no sweeping base-size overhaul came with the new edition. The standard 25mm / 32mm / 40mm / 50mm rounds and the 75x42mm / 90x52mm / 120x92mm ovals that defined 3rd Edition all carried forward.

What does change between editions and Battlescrolls is occasional adjustments to specific units. A unit might shift from 32mm round to 40mm round if its sculpt was redone, or a centerpiece may move from a round to an oval to better fit modern movement rules. These are tracked in the seasonal Battlescroll FAQ rather than in the Battletomes themselves.

If you are rebasing models: always check the current Battlescroll first. Tournament TOs default to "the size on the latest Battlescroll" rather than "the size in the box," so a 2018-era box with a 25mm base may actually require a 32mm base under current rules.

Order — Base Sizes by Faction

The Grand Alliance of Order covers Sigmar's loyalist factions: the Stormcast Eternals, the rebuilt mortal cities, the elven enclaves of Lumineth and Idoneth, the duardin holds, and the lizardmen of the Seraphon. Most Order infantry sit on 32mm rounds, with 25mm reserved for Cities of Sigmar Battleline rank-and-file.

Stormcast Eternals

The poster-boys of Age of Sigmar. Almost every infantry Stormcast sits on either 32mm round (Vindictors, Liberators in some configurations, Vanguard-Hunters) or 40mm round (Annihilators, Praetors, Knight-Vexillors on foot). Cavalry Stormcast on Dracoths use 75x42mm ovals; the Lord-Celestant on Stardrake centerpiece uses a 170x105mm oval.

Base Size Stormcast Unit Shop at LITKO
32mm Round Vindictors, Vanguard-Hunters, Vanguard-Raptors, Sequitors
40mm Round Liberators, Annihilators, Praetors, Castigators, Lord-Veritant on foot, Knight-Vexillor on foot
60mm Round Lord-Veritant on Gryph-Charger, Knight-Judicator with Gryph-Hounds (mounted hero)
75x42mm Oval Dracothian Guard (Tempestors, Concussors, Desolators, Fulminators), Vanguard-Palladors
170x105mm Oval Lord-Celestant on Stardrake, Drakeseer, Karazai the Beast

Cities of Sigmar

The mortal heart of Order: Freeguild humans, Dispossessed duardin, Wanderers, and shrine-soldier elites. Almost everything is 25mm round (Battleline) or 32mm round (elites and heroes). Cavalry use 75x42mm ovals.

Base Size Cities of Sigmar Unit Shop at LITKO
25mm Round Freeguild Steelhelms, Freeguild Fusiliers, Cogsmith units, Battleline rank-and-file
32mm Round Phoenix Guard, Wildwood Rangers, Sisters of the Watch, Drakespawn Knights (foot variants)
75x42mm Oval Freeguild Cavaliers, Drakespawn Knights, Demigryph Knights

Sylvaneth, Idoneth Deepkin, Lumineth, Daughters of Khaine

The aelven and tree-folk factions. Light infantry on 25mm or 32mm; heavy and ranger units on 32mm or 40mm; centerpiece monsters on 100mm round, 105x70mm oval (Treelord-class), or 160mm round. Alarielle the Everqueen anchors the Sylvaneth list on a 160mm round — tied with Archaon the Everchosen and Megaboss on Maw-Krusha for the largest standard base in Age of Sigmar.

Base Size Aelven / Sylvaneth Unit Shop at LITKO
25mm Round Namarti Thralls, Namarti Reavers
32mm Round Tree-Revenants, Spite-Revenants, Vanari Auralan Wardens, Vanari Auralan Sentinels, Witch Aelves, Sisters of Slaughter
40mm Round Dryads, Khinerai Heartrenders, Khinerai Lifetakers
50mm Round Kurnoth Hunters
75x42mm Oval Akhelian Morrsarr Guard, Akhelian Ishlaen Guard, Vanari Dawnriders
105x70mm Oval Treelord, Treelord Ancient, Spirit of Durthu
160mm Round Alarielle the Everqueen

Kharadron Overlords, Fyreslayers, Seraphon

Duardin sky-pirates (Kharadron) and lava-priests (Fyreslayers) plus the lizardmen Seraphon. Kharadron infantry on 32mm (Arkanaut Company, Skywardens, Endrinriggers); Fyreslayer Vulkite Berzerkers on 32mm with Hearthguard Berzerkers also on 32mm. Seraphon Skinks on 25mm; current Saurus Warriors Battle Profile lists them on 32mm round (older sculpts shipped on 28.5mm round — still in production as a direct replacement). Stegadon and Bastiladon use larger ovals.

Note on 28.5mm bases: The 28.5mm round is a legacy Games Workshop size that pre-dates the modern 32mm standard. It still appears on older sculpts (some Saurus Warriors, classic Marauders, certain Stormcast). LITKO stocks 28.5mm rounds for direct replacement. Shop 28.5mm bases here.

Chaos — Base Sizes by Faction

The Grand Alliance of Chaos covers the Slaves to Darkness mortals, the four daemon legions (Khorne, Tzeentch, Nurgle, Slaanesh), the Beasts of Chaos, and the Skaven hordes. The Skaven, in particular, field some of the largest Battleline blocks in the game and lean heavily on 25mm rounds.

Slaves to Darkness

The mortal followers of the Dark Gods. Chaos Warriors are the question most players ask — the modern Battle Profile lists them on 32mm round, a change from the legacy 25mm size used in older Warriors of Chaos boxes. If you are rebasing an old Warhammer Fantasy Chaos army, expect to swap up to 32mm. Chaos Knights ride 75x42mm ovals; the centerpiece is Archaon the Everchosen on his 160mm round.

Base Size Slaves to Darkness Unit Shop at LITKO
25mm Round Chaos Marauders, Chaos Marauder Horsemen (legacy variants)
32mm Round Chaos Warriors, Chaos Chosen, Darkoath Marauders, Darkoath Savagers
40mm Round Chaos Ogroids, Mindstealer Sphiranx, Theddra Skull-Scryer
75x42mm Oval Chaos Knights, Chaos Chariot, Gorebeast Chariot
100mm Round Be'lakor, Chaos Warshrine
160mm Round Archaon the Everchosen

Daemons of Chaos (Khorne, Tzeentch, Nurgle, Slaanesh)

The four Chaos God factions. Greater Daemons sit on 100mm rounds (Keeper of Secrets, Lord of Change, Great Unclean One) or 120x92mm ovals (Bloodthirster). Their Battleline daemons mostly live on 32mm rounds. Bloodcrushers and Mighty Skullcrushers of Khorne both ride on 90x52mm ovals — the same oval size used by Plague Drones, Seekers of Slaanesh, and Gore-Gruntas across the rest of the game.

Base Size Daemon Unit Shop at LITKO
32mm Round Bloodletters, Daemonettes, Plaguebearers, Pink Horrors, Blue Horrors, Brimstone Horrors
40mm Round Beasts of Nurgle, Flamers of Tzeentch, Fiends of Slaanesh, Nurglings
90x52mm Oval Bloodcrushers, Mighty Skullcrushers, Plague Drones, Seekers of Slaanesh
100mm Round Keeper of Secrets, Lord of Change, Great Unclean One
120x92mm Oval Bloodthirster (all four named variants), Skarbrand

Maggotkin of Nurgle & Mortals

Plaguebearers and Plague Marines sit on 32mm rounds; Putrid Blightkings on 40mm; Plague Drones on 75x42 oval; Glottkin and the Great Unclean One on the largest plague-themed bases. Nurgle is the easiest faction to rebase — very few sculpts have moved between sizes.

Base Size Maggotkin / Nurgle Unit Shop at LITKO
32mm Round Plaguebearers, Pusgoyle Blightlords (foot), Lord of Plagues
40mm Round Putrid Blightkings, Beasts of Nurgle
75x42mm Oval Plague Drones of Nurgle
130mm Round Glottkin, Maggoth Lord

Blades of Khorne, Disciples of Tzeentch, Hedonites of Slaanesh

Mixed mortal-and-daemon armies. Khorne mortals (Bloodbound) include Blood Warriors (32mm), Wrathmongers (40mm), and Skullreapers (40mm); their cavalry are Mighty Skullcrushers on 90x52mm ovals with Bloodthirsters as 120x92mm centerpieces. Tzeentch's Kairic Acolytes and Tzaangors sit on 32mm. Hedonites lean heavily on 32mm Daemonettes plus Seekers of Slaanesh on 90x52mm ovals.

Beasts of Chaos & Skaven

Beasts of Chaos (still legal in legacy formats) field Ungors on 25mm, Bestigors on 32mm, Bullgors on 50mm, and centerpiece monsters like the Cygor and Ghorgon on larger rounds or ovals. Skaven Battleline (Clanrats, Stormvermin, Plague Monks) all sit on 25mm rounds; Stormfiends and Verminlords scale up.

Death — Base Sizes by Faction

The Grand Alliance of Death runs on bone, ghost, and the dead. Soulblight Gravelords field everything from 25mm Skeletons to Nagash on a 130mm round. Nighthaunt are entirely incorporeal — many of their units have flying-stand requirements and use clear acrylic 25mm or 40mm rounds. Ossiarch Bonereapers are the construct legion; Flesh-eater Courts swing from Ghouls (25mm) up to a Royal Terrorgheist (120x92mm oval).

Soulblight Gravelords

Base Size Soulblight Unit Shop at LITKO
25mm Round Deathrattle Skeletons, Deadwalker Zombies, Cairn Wraiths
32mm Round Grave Guard, Sepulchral Guard, Vampire Lord (foot)
50mm Round Vargheists, Crypt Horrors (when crossing factions)
60x35mm Oval Blood Knights (specialty smaller-than-standard cavalry oval — not interchangeable with 75x42mm)
75x42mm Oval Black Knights, Hexwraiths
120x92mm Oval Vampire Lord on Zombie Dragon, Vengorian Lord, Terrorgheist, Arkhan, Mannfred, Neferata (Mortarchs on Mount)
130mm Round Nagash, Mortis Engine

Nighthaunt, Ossiarch Bonereapers, Flesh-eater Courts

Nighthaunt run on Chainrasps (25mm), Hexwraiths (75x42 oval), Spirit Hosts (40mm), and centerpiece Mortarchs. Ossiarch Bonereapers have Mortek Guard (32mm), Necropolis Stalkers (40mm), and Gothizzar Harvester on a 100mm round. Flesh-eater Courts are Crypt Ghouls (25mm), Crypt Horrors / Crypt Flayers (50mm), and a Royal Terrorgheist or Zombie Dragon centerpiece on 120x92mm oval.

Destruction — Base Sizes by Faction

The Grand Alliance of Destruction is brawn-first. Orruks (Ironjawz, Bonesplitterz, Kruleboyz) range from Stabbas on 25mm to a Megaboss on Maw-Krusha (Gordrakk) on a 160mm round. Sons of Behemat field nothing but giants — Mancrushers on 90x52mm or 120x92mm ovals, Mega-Gargants (Warstomper, Gatebreaker, Kraken-Eater) on 130mm rounds. Ogor Mawtribes' Mournfang Pack live on 50mm rounds; Stonehorn and Thundertusk on 120x92mm ovals.

Orruk Warclans (Ironjawz, Bonesplitterz, Kruleboyz)

Base Size Orruk Unit Shop at LITKO
25mm Round Hobgrot Slittaz (Kruleboyz), Stabbas / Shootas (Gloomspite cross-faction)
32mm Round 'Ardboyz (Ironjawz), Savage Orruks (Bonesplitterz), Gutrippaz (Kruleboyz), Man-skewer Boltboyz
40mm Round Brutes (Ironjawz), Savage Big Stabbas (Bonesplitterz), Murknob with Belcha-banna
90x52mm Oval Gore-Gruntas (Ironjawz), Maniak Weirdnobz on Boar (Bonesplitterz)
160mm Round Megaboss on Maw-Krusha, Gordrakk the Fist of Gork

Sons of Behemat, Gloomspite Gitz, Ogor Mawtribes

Sons of Behemat are pure giants — Mancrusher Gargants on 90x52mm or 120x92mm ovals, Mega-Gargants (Warstomper, Gatebreaker, Kraken-Eater) on 130mm rounds. Gloomspite Gitz Stabbas/Shootas are 25mm Battleline; Squig Hoppers 40mm; the Arachnarok Spider centerpiece on a large oval. Ogor Mawtribes Gluttons sit on 40mm; Mournfang Pack on 50mm rounds; Stonehorn and Thundertusk on 120x92mm ovals.

Centerpiece Heroes & Named Characters

The named legendary characters that anchor most armies. Each row below is a frequently-searched character — the base size is from the current 4th Edition Battle Profile, with verification flags where the answer has shifted between Battlescrolls.

Base Size Character Faction Shop at LITKO
100mm Round Be'lakor Slaves to Darkness
100mm Round Keeper of Secrets, Lord of Change, Great Unclean One Slaanesh / Tzeentch / Nurgle
100mm Round Morathi, the Shadow Queen Daughters of Khaine
120x92mm Oval Skarbrand, Bloodthirster (all four variants) Blades of Khorne
120x92mm Oval Arkhan the Black, Mannfred Mortarch of Night, Neferata Mortarch of Blood Soulblight Gravelords
120x92mm Oval Katakros, Mortarch of the Necropolis Ossiarch Bonereapers
130mm Round Nagash, Supreme Lord of the Undead Soulblight Gravelords
130mm Round Glottkin Maggotkin of Nurgle
160mm Round Archaon the Everchosen Slaves to Darkness
160mm Round Alarielle the Everqueen Sylvaneth
160mm Round Megaboss on Maw-Krusha, Gordrakk the Fist of Gork Ironjawz
130mm Round Mega-Gargants (Warstomper, Gatebreaker, Kraken-Eater) Sons of Behemat
170x105mm Oval Lord-Celestant on Stardrake, Drakeseer, Karazai the Beast Stormcast Eternals

Sizes verified against the current Age of Sigmar Battle Profile reference (May 2026). Battlescroll FAQs occasionally adjust specific units — bookmark this page and check the latest Battlescroll on warhammer-community.com before any tournament.

Download the Printable PDF

Want this whole chart at the painting table? The downloadable PDF is print-formatted, includes a quick-reference card you can fold and stash with your army, and comes with a 10% discount on LITKO bases for Age of Sigmar.

Download the AoS Base Sizes PDF

Includes AOSBASES10 — 10% off Age of Sigmar bases at litko.net.

How to Identify Your Base Size

Three steps in order:

  1. Check the box. Modern Games Workshop kits include the official base. The size on the sprue is the size to use.
  2. Check the Battle Profile card. The free Warhammer app lists every unit's official base size. The card overrides anything in the box if Games Workshop has updated the unit since release.
  3. Check the latest Battlescroll FAQ. The seasonal Battlescroll PDF on the Warhammer Community site is the final authority for tournament play. If your Battle Profile says 32mm and the Battlescroll says 40mm, the Battlescroll wins.

If you are rebasing an older Warhammer Fantasy army for Age of Sigmar — which uses round bases instead of squares — LITKO's base adapter trays let you keep the original square base and add the correct round perimeter for AoS legality.

Choosing a Base Material: Acrylic vs. Plywood vs. Magnetic

LITKO cuts AoS-compatible bases in three materials. Each has trade-offs:

  • Clear acrylic — the most popular choice. Works for flying-stand units (Hexwraiths, Spirit Hosts, Khinerai), invisible against any tabletop, easy to magnetize. 1.5mm thick is the standard.
  • Plywood — warmer, takes paint and basing materials well. Best for rank-and-file infantry where the base will be fully covered with flock or sand.
  • Magnetic-bottom acrylic — for transport. Sticks to LITKO flexible steel sheets in a case. Recommended for armies that travel to tournaments.

Need a Custom Size? Use LITKO BaseMaker

For non-standard sizes — 60x35mm ovals for legacy specialty cavalry, 105x70mm ovals for Treelords, 170x105mm ovals for Lord-Celestant on Stardrake, conversion projects, or anything Games Workshop hasn't sold in years — LITKO's BaseMaker tool lets you order custom round, oval, square, or rectangular bases cut to your exact specifications. Pick the shape, dimensions, material, and thickness; we cut it on demand.

Open the LITKO BaseMaker

New to custom bases? Our companion guide walks through how to order custom bases to any size — what BaseMaker can produce, choosing a material, exact sizing, and ordering in volume tiers.

Frequently Asked Questions

Did 4th Edition change Age of Sigmar base sizes?

No sweeping changes. The standard base sizes (25mm / 32mm / 40mm / 50mm rounds; 75x42mm / 90x52mm / 120x92mm ovals) all carried forward from 3rd Edition. Specific units occasionally shift between sizes via Battlescroll FAQs, but if you have a 3rd Edition army you don't need to rebase wholesale.

What size base do Chaos Warriors use in Age of Sigmar?

The current Battlescroll lists Chaos Warriors on 32mm round. This was a notable change from the legacy 25mm size used for many years. Always confirm against the current Battle Profile card, especially if you're rebasing an older Warriors of Chaos army from Warhammer Fantasy.

Are 40K and Age of Sigmar base sizes the same?

The diameters are the same. A 32mm round is a 32mm round in either game. Where the systems differ is the unit catalog — AoS has factions like Stormcast Eternals and Sylvaneth that don't exist in 40K, and vice versa for Space Marines and Necrons. Many Chaos Daemon units (Bloodletters, Plaguebearers, Pink Horrors) are legal in both systems on identical bases.

Do I need to rebase old Warhammer Fantasy models for Age of Sigmar?

Technically yes, since AoS uses round bases and Fantasy used squares. In practice, most casual events accept square-based legacy armies, and base adapter trays let you keep the original base while satisfying tournament requirements. For competitive AoS play, plan to rebase to rounds.

What size base does Archaon use?

Archaon the Everchosen sits on a 160mm round. It is the largest standard base size in Age of Sigmar, tied with Alarielle the Everqueen and Megaboss on Maw-Krusha (Gordrakk). (Mega-Gargants sit on 130mm rounds — large, but a size class below the apex centerpieces.) LITKO stocks 160mm rounds in clear acrylic.

How big is Alarielle's base?

Alarielle the Everqueen uses a 160mm round per the current Battle Profile — tied with Archaon the Everchosen and Gordrakk (Megaboss on Maw-Krusha) as the largest standard base in Age of Sigmar.

What size are AoS cavalry bases?

Most Age of Sigmar cavalry sit on 75x42mm oval bases (Dracothian Guard, Chaos Knights, Demigryph Knights, Blood Knights, Black Knights, Hexwraiths). Larger mounted units jump up: Mournfang Pack on 50mm rounds, Gore-Gruntas / Bloodcrushers on 90x52mm ovals, Stonehorn and Thundertusk on 120x92mm ovals, Maw-Krusha on a 160mm round.

Related Base Size Guides

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