Official sizes and heights

Scale in Transformers is inconsistent to put it mildly. There are times however outside and inside of lore when official heights and sizes of characters are given. Here is a list of said sizes.

Generation 1

Marvel comics:

• Bumblebee: 15'
• Shockwave (bio, gun mode length): >35'
• Thunderwing (Pretender shell): 40'
• Dreadwind: 42'
• Devastator
  • Bio: >60'
  • UK booklet: 100'
• Predaking: 80'
• Superion: 86' 7 3/8" (8 stories)
• Metroplex (UK booklet): 698'
• Broadside (carrier mode length): 1,200'

The Transformers Cartoon scale charts:

• Rumble: 2 m
• Frenzy: 2 m
• Ravage: 2 m
• Laserbeak (wingspan): 2 m
• Buzzsaw (wingspan): 2 m
• Kickback: 2.5 m
• Shrapnel: 2.5 m
• Bombshell 2.5 m
• Bumblebee: >3 m
• Cliffjumper: >3 m
• Windcharger: 3 m
• Gears: 3 m
• Huffer: 3.5 m
• Brawn: 3.5 m
• Reflector: 4 m
• Mirage: 4 m
• Wheeljack: 4 m
• Smokescreen: 4 m
• Bluestreak: 4 m
• Prowl: 4 m
• Jazz: 4 m
• Red Alert: 4 m
• Sideswipe: 4 m
• Sunstreaker: 4 m
• Hoist: 5 m
• Grapple: 5 m
• Inferno: 5 m
• Ratchet: 5 m
• Ironhide: 5 m
• Trailbreaker: 5 m
• Perceptor: 5 m
• Skywarp: 5 m
• Thundercracker: 5 m
• Starscream: 5 m
• Soundwave: 5.5 m
• Shockwave: 5.5 m
• Blaster: 5.5 m
• Ramjet: 5.5 m
• Dirge: 5.5 m
• Thrust: 5.5 m
• Blitzwing: 5.5 m
• Astrotrain: 5.5 m
• Optimus Prime: 6 m
• Megatron: 6 m
• Snarl: 7 m
• Slag: 7 m
• Sludge: 7 m
• Grimlock: 7 m
• Devastator: ~16 m
• Omega Supreme: ~18 m

Hobby Japan:

• Metroplex: 800 m
• Unicron: Jupiter-sized (so approximately 140,000 km in diameter)

Super Robots Guide:

• Fortress Maximus: 3 km

Transformers: The Headmasters scale charts:

• Shouki: 5 m
• Razorclaw: 5.5 m
• Mindwipe: 5.5 m
• Zarak: ~5.5 m
• Highbrow: 5.5 m
• Springer: 6 m
• Weirdwolf: 6 m
• Skullcruncher: 6 m
• Optimus Prime: 6 m
• Rodimus Prime: 6 m
• Hardhead: 6 m
• Cerebros: 6 m
• Brainstorm: 6 m
• Galvatron: 6 m
• Ultra Magnus: ~7 m
• Grimlock: 7 m
• Cyclonus: 7 m
• Sixshot: 7 m
• Devastator: ~16 m
• Raiden: ~16 m
• Predaking: 16 m

Masterforce scale notes:

• Ginrai: 8 m
• Super Ginrai: 15 m

Kodansha properties:

• Shūta Gō: 7 m (Kodansha guidebooks)
• Cab: 7 m (Kodansha guidebooks)
• Minerva: 7 m (Kodansha guidebooks)
• Wilder: 7 m (Kodansha guidebooks)
• Bullhorn: 7 m (Kodansha guidebooks)
• Cancer: 7 m (Kodansha guidebooks)
• Battle Convoy: 13 m (Terebi Magazine)
• King Poseidon: 20 m (Terebi Magazine)
• Guard City: 60 m (Terebi Magazine)
• Battle Gaia: 65 m (Terebi Magazine)
• Metroplex: 800 m (Comic Bom Bom)

Masterpiece bios and booklets:

• Optimus Prime (MP-01): 36 m
• Starscream (ghost version): >10 m

Transformers x Evangelion:

• Optimus Prime Mode Eva: 75 m

Beast Wars cartoon bible:

• Rattrap: 5'

Japanese Beast Wars data:

• Rattrap: 1.8 m
• Rattrap (Transmetal): 1.8 m
• Airazor: 1.8 m
• Quickstrike: 2 m
• Ravage: 2.1 m
• Cheetor: 2.3 m
• Cheetor (Transmetal): 2.3 m
• Tigatron: 2.3 m
• Terrorsaur: 2.3 m
• Blackarachnia: 2.4 m
• Tarantulas: 2.4 m
• Tarantulas (Transmetal): 2.5 m
• Scorponok: 2.5 m
• Waspinator: 2.5 m
• Rhinox: 2.6 m
• Inferno: 2.6 m
• Silverbolt: 2.6 m
• Blackarachnia (Transmetal 2): 2.6 m
• Cheetor (Transmetal 2): 2.7 m
• Optimus Primal: 2.8 m
• Megatron: 2.8 m
• Dinobot : 2.9 m
• Dinobot II: 3.1 m
• Optimus Primal (Transmetal): 3.2 m
• Megatron (Transmetal): 3.2 m
• Depthcharge: 3.4 m
• Rampage: 3.4 m
• Tigerhawk: 7 m
• Megatron (Transmetal 2): 11.5 m
• Optimal Optimus: 12 m

Beast Wars Transmetals game:

• Rattrap (Transmetal): 1.8 m
• Quickstrike: 2 m
• Cheetor (Transmetal): 2.3 m
• Tarantulas (Transmetal): 2.5 m
• Silverbolt: 2.6 m
• Optimus Primal (Transmetal): 3 m
• Megatron (Transmetal): 3.2 m
• Rampage (Transmetal): 3.4 m

Beast Wars II data:

• Drillnuts: 2.0 m
• Star Upper: 2.0 m
• Scissorboy: 2.1 m
• Lio Junior: 2.2 m
• Tasmania Kid: 2.3 m
• Coelagon: 2.4 m
• DJ: 2.5 m
• Terrormandar: 2.5 m
• Tonbot: 2.5 m
• Starscream: 2.5 m
• Dirge: 2.5 m
• Thrust: 2.6 m
• Autolauncher: 2.6 m
• Scuba: 2.7 m
• Autocrusher: 2.7 m
• Ikard: 2.7 m
• Diver: 2.7 m
• Big Mos: 2.7 m
• Autojetter: 2.7 m
• Scylla: 2.7 m
• Sea Phantom: 2.8 m
• Autostinger: 2.8 m
• Thrustor: 2.8 m
• Mantis: 2.8 m
• Dirgegun: 2.8 m
• Skywarp: 2.8 m
• Hellscream: 2.8 m
• Apache: 2.9 m
• Lio Convoy: 3.0 m
• Motorarm: 3.0 m
• Powerhug: 3.2 m
• Max-B: 3.2 m
• Bighorn: 3.5 m
• Santon: 3.5 m
• Gimlet: 3.5 m
• Halfshell: 4.0 m
• Megastorm: 4.0 m
• BB: 4.0 m
• Galvatron: 5.0 m
• Magnaboss: 5.5 m
• Tripledacus: 5.5 m
• God Neptune: 5.7 m
• Tako Tank/Sumiikar: 5.8 m
• Gigastorm: 15 m
• Majin Zarak: 200 m

Beast Wars Neo data:

• Stampy: 2.6 m
• Heinrad: 2.6 m
• Bump: 2.7 m
• Hydra: 2.7 m
• Colada: 2.75 m
• Break: 2.8 m
• Crazybolt: 2.8 m
• Randy: 2.8 m
• Saberback: 2.9 m
• Longrack: 2.9 m
• Sling: 2.9 m
• Hardhead: 2.9 m
• Sharpedge: 3.0 m
• Rockbuster: 3.0 m
• Deadend: 3.0 m
• Bazooka: 3.0 m
• Killerpunch: 3.1 m
• Archadis: 3.1 m
• Mach Kick: 3.1 m
• Survive: 3.1 m
• Guiledart: .2 m
• Big Convoy: 3.2 m
• Elphaorpha: 3.8 m
• Drancron: 3.9 m
• Latolata: 4.0 m
• Magmatron: 4.5 m

Dreamwave Generation One continuity:

• The Nemesis
  • Length: 2.5 miles
  • Wingspan: 1.75 miles
  • Height: 1.25 miles

2005 IDW continuity

• Aileron: 22'
• Centurion: 26'
• Kup: 30'
• Blitzwing: 30'
• Jazz: 32'
• Soundwave: 32'
• Arcee: 33'
• Windblade: 33'
• Optimus Prime:
  • 38'
  • 60' (Transformers #51)
• Grimlock: 38'
• Megatron: 38'
• Victorion: ~150'
• Devastator: 400'
• Metrotitan: 2 miles
• Lost Light:
  • 15 miles long
  • 10 miles wide

Transformers: Robots in Disguise (2001 franchise)

Robots In Disguise Cartoon:

• Skid-Z: 3.7 m
• Mirage: 3.7 m
• R.E.V.: 3.8 m
• W.A.R.S.: 3.8 m
• Crosswise: 3.8 m
• Hot Shot: 3.8 m
• Gaskunk: 4 m
• Nightscream: 4 m
• Slapper: 4 m
• Movor: 4 m
• Rollbar: 4 m
• Armorhide: 4 m
• Sideburn: 4 m
• Ironhide: 4.1 m
• X-Brawn: 4.3 m
• Ro-Tor: 4.6 m
• Tow-Line: 4.8 m
• Sky-Byte: 4.8 m
• Scourge: 5 m
• Optimus Prime: 5 m
• Optimus Prime (Super Mode): 6.5 m
• Mega-Octane: 7 m
• Megatron: 7 m
• Midnight Express: 9.2 m
• Rapid Run: 9.7 m
• Railspike: 10 m
• Landfill: 12 m
• Rail Racer: 15 m
• Ruination: 16 m
• Brave Maximus: 350 m

Unicron Trilogy

Transformers Video Game:

• Hot Shot: 16' 5"
• Cyclonus:
  • Vehicle: 17' 1"
  • Robot: 19' 7"
• Starscream:
  • Vehicle: 15' 1"
  • Robot 19' 7"
• Red Alert: 19' 8"
• Optimus Prime: 22' 11"
• Megatron:
  • Vehicle: 8' 3"
  • Robot: 22' 11"

Superlink Pla-Kit 1/45 models:

• Grand Convoy: 13' 1½"
• Grand Scourge: 13' 1½"
• Grand Convoy (Super Mode): 15' 11¼"
• Grand Scourge (Super Mode): 15' 11¼"

Galaxy Force DVD booklets:

• Bud Hansen: 144 cm
• Lori: 159 cm
• Coby Hansen: 165 cm
• Reverb: 1.8 m
• Six-Speed: 1.8 m
• Jolt: 2.0 m
• Lugnutz: 2.8 m
• Ransack: 2.8 m
• Undermine: 2.8 m
• Brimstone: 3.9 m
• Overhaul: 3.0 m
• Scrapmetals: 3.0 m
• Backstop: 3.2 m
• Brakedown: 3.2 m
• Scattorshot: 3.2 m
• Clocker: 3.4 m
• Sideways: 3.7 m
• Snarl: 3.7 m
• Crosswise: 3.8 m
• Hot Shot: 3.8 m
• Landmine: 3.8 m
• Red Alert: 3.8 m
• Cybertron Defense Hot Shot: 3.8 m
• Thunderblast: 3.9 m
• Thundercracker: 3.9 m
• Override: 4.0 m
• Dirt Boss: 4.0 m
• Soundwave: 4.1 m
• Evac: 4.2 m
• Starscream: 4.2 m
• Cybertron Defense Scattorshot: 4.3 m
• Cybertron Defense Red Alert: 4.5 m
• Wing Saber: 4.5 m
• Leobreaker: 4.5 m
• Nemesis Breaker: 4.5 m
• Jetfire: 4.6 m
• Crumplezone: 4.8 m
• Optimus Prime: 5 m
• Vector Prime: 5.2 m
• Mudflap: 5.4 m
• Dark Crumplezone: 5.5 m
• Scourge: 5.5 m
• Optimus Prime Super Mode, Savage Claw Mode & Sonic Wing Mode: 6m
• Megatron/Galvatron: 6 m
• Quickmix: 10.4 m
• Menasor: 11.3 m
• Metroplex: 20.0 m
• Super Starscream: Unmesurable
• Primus: Unmesurable

Live-action film series

Preliminary scale chart for first film:

• Arcee: 9'
• Jazz: 14'
• Bumblebee: 18'
• Ratchet: 24'
• Optimus Prime: 32'

Scale chart for first film:

• Frenzy: 3'
• Jazz: 15'
• Bumblebee: 16'
• Barricade: 16'
• Ratchet: 20'
• Ironhide: 22'
• Optimus Prime: 28'
• Starscream: 31'
• Blackout: 33'
• Megatron: 35'

The Boston Globe trading cards:

• Frenzy: 4' 6"
• Jazz: 15' 7"
• Bumblebee: 16' 2"
• Barricade: 16' 3"
• Ratchet: 20' 1"
• Ironhide: 22'
• Optimus Prime: 28'
• Starscream: 31'
• Blackout: 33' 5"
• Megatron: 35'

Transformers The Game:

• Bumblebee: 16'

Revenge of the Fallen concept art:

• Depthcharge: 150'

Revenge of the Fallen film scale charts:

• Frenzy: 3'
• Arcee 1: 7'
• Arcee 2: 7'
• Arcee 3: 7'
• Mudflap: 8'
• Skids: 8'
• Arcee (combined): 15'
• Sideswipe: 15'
• Bumblebee: 16'
• Barricade: 16'
• Ratchet: 20'
• Ironhide: 22'
• Soundwave: 22'
• Cement Mixer: 22'
• Optimus Prime: 28'
• Osprey: 30'
• Starscream: 31'
• Blackout: 33'
• Megatron: 35'
• Rampage: 35'
• Optimus Prime (Power Up): 40'
• Jetfire: 50'
• Long Haul: 65'
• Scavenger: 75'
• Devastator: 100'

Transformers: Revenge of the Fallen: The Movie Universe:

• Ravage:
  • Height: 7' 2"
  • Length: 15'
• Skids: 11' 4"
• Mudflap: 11' 4"
• Bumblebee: 16' 2"
• Blackout: 22' 5"
• Ironhide: 25'
• Optimus Prime: 28'
• Starscream: 31'
• The Fallen: 42'
• Devastator: (on all fours) 46'

Revenge of the Fallen sticker sheets:

• Megatron: 35'

Michael Bay's Revenge of the Fallen blog:

• Devastator: ~108' 3 7/32" ("10 stories")

Transformers: Age of Extinction scale chart

• Grimlock: 84'
• Slug: 71'
• Strafe: 57'
• Scorn: 87'

Age of Extinction KSI blueprints

• KSI Sentry: 14'
• Stinger: 16'
• Yellow Junkheap: 20'
• White Junkheap: 21'
• Green Junkheap: 22'
• KSI Boss: 23'
• Two Head: 24'

Transformers: The Last Knight scale chart

• Optimus Prime: 29'
• Cogman: 4' 5"
• Daytrader: 16'

Transformers: The Last Knight Twitter page

• Sqweeks: 3' 6"
• Barricade: 16'
• Drift: 16'
• Hot Rod: 16' 1"
• Bumblebee: 18'
• Crosshairs: 18'
• Hound: 24'
• Megatron: 30'

The Last Knight TRF prisoner dossier bios

• Mohawk: 14'
• Barricade: 16'
• Dreadbot: 18'
• Berserker: 18'
• Onslaught: 27'
• Nitro Zeus: 28'
• Megatron: 30'

Transformers: Rise of the Beasts AR Statue Experience stats

• Optimus Prime: 19' 10"
• Optimus Primal: 13' 2" (in beast mode)
• Mirage: 15'

Aligned continuity family

Transformers: Fall of Cybertron:

• Bumblebee: 20'
• Optimus Prime: ~30'
• Megatron: ~30'
• Grimlock: 40'
• Bruticus: 70'
• Metroplex: 600'

Transformers: Retribution game

• Omega Supreme: 1/2 mile

Transformers: Prime cartoon:

• Predaking (wingspan): ~220 m ("two football fields")