This is a list of champions and their armor at level 1, armor growth and armor at level 18. This does not contain any armor gained from abilities (passive or active), items, runes or masteries.

Under the list you can see one additional champion: Mega Gnar, the alternate form of Gnar who has different base stats.
Champion Value at level 1 Growth coefficient Value at 18
AatroxSquare Aatrox33+3.897.6
AhriSquare Ahri20.88+3.580.4
AkaliSquare Akali31.38+3.590.9
AlistarSquare Alistar44+3.5103.5
AmumuSquare Amumu33+3.897.6
AniviaSquare Anivia21.22+489.2
AnnieSquare Annie19.22+487.2
AsheSquare Ashe30+3.487.8
Aurelion SolSquare Aurelion Sol19+3.680.2
AzirSquare Azir19.04+370
BardSquare Bard34+4102
BlitzcrankSquare Blitzcrank44+4112
BrandSquare Brand21.88+3.581.4
BraumSquare Braum47+4.5123.5
CaitlynSquare Caitlyn32+3.591.5
CamilleSquare Camille35+3.899.6
CassiopeiaSquare Cassiopeia25+3.584.5
Cho'GathSquare Cho'Gath38+3.597.5
CorkiSquare Corki28+3.587.5
DariusSquare Darius39+4107
DianaSquare Diana31+3.692.2
Dr. MundoSquare Dr. Mundo36+3.595.5
DravenSquare Draven35+3.391.1
EkkoSquare Ekko32+383
EliseSquare Elise27+3.3584
EvelynnSquare Evelynn37+3.596.5
EzrealSquare Ezreal31+3.590.5
FiddlesticksSquare Fiddlesticks30+3.589.5
FioraSquare Fiora33+3.592.5
FizzSquare Fizz22.412+3.480.2
GalioSquare Galio24+3.583.5
GangplankSquare Gangplank35+386
GarenSquare Garen36+387
GnarSquare Gnar32+2.574.5
GragasSquare Gragas35+3.696.2
GravesSquare Graves33+3.490.8
HecarimSquare Hecarim36+4104
HeimerdingerSquare Heimerdinger19.04+370
IllaoiSquare Illaoi35+3.899.6
IreliaSquare Irelia34+3.7597.8
IvernSquare Ivern27+3.586.5
JannaSquare Janna28+3.892.6
Jarvan IVSquare Jarvan IV38+3.699.2
JaxSquare Jax36+3.087
JayceSquare Jayce27+3.586.5
JhinSquare Jhin29+3.588.5
JinxSquare Jinx32+3.591.5
KalistaSquare Kalista28+3.587.5
KarmaSquare Karma20.384+3.885
KarthusSquare Karthus20.88+3.580.4
KassadinSquare Kassadin23.376+3.277.8
KatarinaSquare Katarina27.88+3.587.4
KayleSquare Kayle26.88+3.586.4
KaynSquare Kayn38+3.394.1
KennenSquare Kennen29+3.7592.8
Kha'ZixSquare Kha'Zix36+387
KindredSquare Kindred29+3.588.5
KledSquare Kled35+4103
Kog'MawSquare Kog'Maw29+3.588.5
LeBlancSquare LeBlanc21.88+3.581.4
Lee SinSquare Lee Sin33+3.795.9
LeonaSquare Leona47+3.6108.2
LissandraSquare Lissandra20.216+3.783.1
LucianSquare Lucian33+384
LuluSquare Lulu28.22+3.791.1
LuxSquare Lux18.72+486.7
MalphiteSquare Malphite37+3.75100.8
MalzaharSquare Malzahar18+3.577.5
MaokaiSquare Maokai39+4107
Master YiSquare Master Yi33+384
Miss FortuneSquare Miss Fortune33+384
MordekaiserSquare Mordekaiser25+3.7588.8
MorganaSquare Morgana25.384+3.890
NamiSquare Nami29+497
NasusSquare Nasus34+3.593.5
NautilusSquare Nautilus35.46+3.7599.2
NidaleeSquare Nidalee28+3.587.5
NocturneSquare Nocturne36+3.595.5
NunuSquare Nunu28+3.587.5
OlafSquare Olaf35+386
OriannaSquare Orianna17.04+368
OrnnSquare Ornn33.04+384
PantheonSquare Pantheon37+3.9103.3
PoppySquare Poppy38+3.597.5
QuinnSquare Quinn32+3.591.5
RakanSquare Rakan36+3.9102.3
RammusSquare Rammus36+4.3109.1
Rek'SaiSquare Rek'Sai33+3.7596.8
RenektonSquare Renekton35+3.899.6
RengarSquare Rengar34+385
RivenSquare Riven33+3.287.4
RumbleSquare Rumble30.88+3.590.4
RyzeSquare Ryze21.552+372.6
SejuaniSquare Sejuani31+382
ShacoSquare Shaco30+3.589.5
ShenSquare Shen34+385
ShyvanaSquare Shyvana38+3.3595
SingedSquare Singed37+3.596.5
SionSquare Sion32+383
SivirSquare Sivir31+3.2586.3
SkarnerSquare Skarner38+3.8102.6
SonaSquare Sona28+3.384.1
SorakaSquare Soraka32+3.896.6
SwainSquare Swain22.72+490.7
SyndraSquare Syndra24.712+3.482.5
Tahm KenchSquare Tahm Kench47+3.5106.5
TaliyahSquare Taliyah20+3.579.5
TalonSquare Talon32+3.591.5
TaricSquare Taric45+3.4102.8
TeemoSquare Teemo24.3+3.7588.1
ThreshSquare Thresh28+028
TristanaSquare Tristana31+382
TrundleSquare Trundle37+2.782.9
TryndamereSquare Tryndamere33+3.185.7
Twisted FateSquare Twisted Fate20.542+3.1574.1
TwitchSquare Twitch32+383
UdyrSquare Udyr34+4102
UrgotSquare Urgot39+4.25111.3
VarusSquare Varus32+3.489.8
VayneSquare Vayne28+3.485.8
VeigarSquare Veigar22.55+3.7586.3
Vel'KozSquare Vel'Koz21.88+3.581.4
ViSquare Vi35+3.594.5
ViktorSquare Viktor22.72+490.7
VladimirSquare Vladimir23+3.379.1
VolibearSquare Volibear35+3.594.5
WarwickSquare Warwick33+3.287.4
WukongSquare Wukong34+3.593.5
XayahSquare Xayah33+384
XerathSquare Xerath21.88+3.581.4
Xin ZhaoSquare Xin Zhao35+3.594.5
YasuoSquare Yasuo30+3.487.8
YorickSquare Yorick39+4107
ZacSquare Zac33+3.592.5
ZedSquare Zed32+3.591.5
ZiggsSquare Ziggs21.544+3.377.6
ZileanSquare Zilean24+3.888.6
ZoeSquare Zoe20.8+3.580.3
ZyraSquare Zyra29+380

Mega Gnar

Champion Value Level 1 Growth (per level coefficient) Value at 18
Gnar MegaSquare Mega Gnar 26.5 +4.5 103

See also