Pokémon GO type chart

The matchups are the same as the main games. The numbers are not.

Garchomp
DragonGroundHP

Hit GARCHOMP with Ice for 2.56× damage. It's super effective!

Moves against Garchomp

Full page
2.56×
1.6×
0.625×
0.244×
DEF →ATK ↓
.63
0.24
2.56
.63
.63
1.6
1.6

Fire moves hit

Super effective
GrassIceBugSteel
Not very effective
FireWaterRockDragon

Fire Pokémon take

Weak to
WaterGroundRock
Resists
FireGrassIceBugSteelFairy
All Fire Pokémon and dual types
1.6 Super effective.63 Not very.39 Weakest hitRows attack, columns defend.

What's different here

Super effective is 1.6×. A double weakness is 2.56×, not 4×.

Not very effective is 0.625×. A double resistance is about 0.39×.

There are no immunities. What would be 0× deals 0.39× instead, so a Normal move can still hit a Ghost.