You can evolve Growlithe at any level using a Fire Stone, so the “best” level depends on which moves you want it to learn before it becomes Arcanine.

What level should I evolve Growlithe?

The short version:
Evolve Growlithe after it has learned the key moves you care about (usually Flamethrower and/or Flare Blitz), then use your Fire Stone.

Because different games and generations change learnsets, players on forums usually suggest two main breakpoints:

  • Around level 34–35
  • Around level 45–50

Below is how people generally decide.

Option 1: Earlier evolution (around 34–35)

Many players evolve Growlithe around level 34–35 , once it has learned Flamethrower (and sometimes ExtremeSpeed depending on the game).

Why choose this:

  • You stop using a frail Growlithe and get a much stronger Arcanine earlier in the story.
  • You still keep a strong, reliable Fire STAB (Flamethrower).
  • In some gens, Arcanine can then learn ExtremeSpeed right when you evolve it at that level.

Players who prioritize smooth, low‑stress playthroughs (instead of squeezing every move out) tend to pick this window.

Option 2: Late evolution (around 45–50)

If you want all of Growlithe’s natural moves , people recommend waiting until roughly level 45–50.

Typical “max-move” approach from forum discussions:

  • Stay as Growlithe until it learns:
    • Flamethrower (mid 30s)
    • Crunch (late 30s)
    • Outrage (early 40s, in some games)
    • Flare Blitz (mid 40s, often its last level‑up move)
  • Then evolve it right after its last key move , often around 45 , so you get Flare Blitz and then a strong Arcanine.

This is best if you really care about Flare Blitz and coverage moves like Crunch and Outrage , and you don’t mind grinding with a weaker pre‑evo.

How modern games change things (Move Reminder)

In newer games with easy Move Reminder , you don’t have to wait as long, because you can relearn Growlithe’s old moves later.

  • Some guides now say it used to be “ideal” to evolve around 45 , but with Move Reminder, you can evolve earlier and just reteach moves.
  • That means you can prioritize having an early Arcanine without permanently missing Flamethrower, Crunch, etc.

So in modern titles, “what level should I evolve Growlithe” is more about when you want the power spike than about permanently losing moves.

Practical rule of thumb

If you don’t want to dig through a detailed learnset chart, this simple approach matches what most forum players do:

  1. Decide if you care about Flare Blitz :
    • If yes → keep Growlithe until it learns Flare Blitz (often mid‑40s), then evolve right after.
    • If no / happy with Flamethrower + TM coverage → evolve around level 34–35 after Flamethrower.
  2. If your game has an easy Move Reminder:
    • Feel free to evolve earlier ; you can relearn Growlithe’s old moves later.
  1. If you’re struggling in the story:
    • Evolve sooner ; a strong Arcanine now usually matters more than one extra move later.

Mini story-style example

Imagine you’re halfway through your playthrough, and your level 33 Growlithe keeps fainting in two hits.
You let it hit 34 , pick up Flamethrower , then immediately use a Fire Stone.
Suddenly that same puppy becomes an Arcanine that deletes enemy teams instead of barely surviving; later, you patch its moveset with TMs or the Move Reminder. That’s the common “comfort playthrough” path players describe on forums.

TL;DR:

  • No fixed level: Growlithe evolves with a Fire Stone at any time.
  • Comfort choice: evolve around 34–35 after Flamethrower.
  • Max-move choice: wait until mid‑40s (when it learns Flare Blitz / final moves), then evolve.

Information gathered from public forums or data available on the internet and portrayed here.