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.

Primax

Marvel comics:

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

Japanese guides, comics, etc.:

• Battle Convoy 13 meters
• Guard City 60 meters
• Battle Gaia 65 meters
• Metroplex (Comic Bom Bom, Hobby Japan) 800 meters
• Fortress Maximus (Super Robots Guide) 3 kilometers

Masterpiece bios and booklets:

• Optimus Prime 36 meters
• Starscream (ghost version) 10 meters< ("well over 10 meters tall")

Beast Wars cartoon bible:

• Rattrap 5'

Japanese Beast Wars data:

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

Beast Wars Transmetals game:

• Rattrap (Transmetal) 180 cm
• Quickstrike 200 cm
• Cheetor (Transmetal) 230 cm
• Tarantulas (Transmetal) 250 cm
• Silverbolt 260 cm
• Optimus Primal (Transmetal) 300 cm
• Megatron (Transmetal) 320 cm
• Rampage (Transmetal) 340 cm

Beast Wars II data

• Drillnuts 2 meters
• Star Upper 2 meters
• Scissorboy 2.1 meters
• Lio Junior 2.2 meters
• DJ 2.5 meters
• Scuba 2.7 meters
• Apache 2.9 meters
• Lio Convoy 3 meters
• Tasmania Kid 2.3 meters
• Coelagon 2.4 meters
• Terrormandar 2.5 meters
• Tonbot 2.5 meters
• Starscream 2.5 meters
• Dirge 2.5 meters
• Thrust 2.6 meters
• Autolauncher 2.6 meters
• Autocrusher 2.7 meters
• Ikard 2.7 meters
• Diver 2.7 meters
• Big Mos 2.7 meters
• Autojetter 2.7 meters
• Scylla 2.7 meters
• Sea Phantom 2.8 meters
• Autostinger 2.8 meters
• Thrustor 2.8 meters
• Mantis 2.8 meters
• Dirgegun 2.8 meters
• Skywarp 2.8 meters
• Hellscream 2.8 meters
• Motorarm 3 meters
• Powerhug 3.2 meters
• Max B 3.2 meters
• Bighorn 3.5 meters
• Santon 3.5 meters
• Gimlet 3.5 meters
• Halfshell 4 meters
• Megastorm 4 meters
• BB 4 meters
• Galvatron 5 meters
• Magnaboss 5.5 meters
• Tripledacus 5.5 meters
• God Neptune 5.7 meters
• Tako Tank/Sumi Icar 5.8 meters
• Gigastorm 15 meters
• Majin Zarak 200 meters

Beast Wars Neo data

• Stampy 2.6 meters
• Heinlad 2.6 meters
• Bump 2.7 meters
• Hydra 2.7 meters
• Colada 2.75 meters
• Break 2.8 meters
• Crazybolt 2.8 meters
• Randy 2.8 meters
• Saberback 2.9 meters
• Longrack 2.9 meters
• Sling 2.9 meters
• Hardhead 2.9 meters
• Sharpedge 3 meters
• Rockbuster 3 meters
• Deadend 3 meters
• Bazooka 3 meters
• Killerpunch 3.1 meters
• Archadis 3.1 meters
• Machkick 3.1 meters
• Survive 3.1 meters
• Guiledart 3.2 meters
• Big Convoy 3.2 meters
• Elphaorpha 3.8 meters
• Drancron 3.9 meters
• Rartorarta 4 meters
• Magmatron 4.5 meters

Dreamwave comics:

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

IDW comics:

• Optimus Prime 60'
• Devastator 400'
• Metrotitan 2 miles

Viron

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

Aurex

Armada 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"

Galaxy Force DVD booklets:

• Soundwave 4.1 meters
• Crumplezone 5.5 meters

Tyran

Transformers film trading cards:

• Optimus Prime 28'

Transformers The Game:

• Bumblebee 16'

Revenge of the Fallen film scale chart:

• Sideswipe 15'
• Bumblebee 16'
• Ratchet 20'
• Ironhide 22'
• Optimus Prime 28'
• Megatron 35'
• Optimus Prime (Power Up) 40'

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 46'

Revenge of the Fallen sticker sheets:

• Megatron 35'

Uniend

FOC video game:

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

Transformers: Prime cartoon

• Predaking (wingspan) 220 meters ("two football fields")