You should usually evolve Nidorino pretty early—often as soon as you’re ready and have a Moon Stone—but the “perfect” timing depends on which game you’re playing and whether you care about a couple of niche level‑up moves.

Quick Scoop: Core Advice

  • In many older mainline games (like Red/Blue/Yellow–style movepools), a popular strategy is to evolve sometime before level 23 so that Nidoking learns the strong move Thrash upon evolution.
  • Beyond that point, most of Nidorino’s remaining level‑up moves are either weak or replaceable by better TMs, so holding it back for many extra levels usually isn’t worth it for normal play.
  • Practically, lots of players just evolve it as soon as they have a Moon Stone and it has any early moves they like, because Nidoking’s stats and TM coverage are the real prize.

“Evolve Nidorino sometime before level 23 so Nidoking will learn Thrash instead. Then you can teach it Earthquake and Sludge Bomb later.”

Why earlier is usually better

  • Big stat jump: Nidoking gets much higher Attack, Special Attack, and Speed than Nidorino, which makes the game easier from that point on.
  • TM versatility: Nidoking can learn a wide range of TMs (like Earthquake and Sludge Bomb in older gens, plus many others in later games), so you’re not relying on Nidorino’s own level‑up movepool very much.
  • Weak Nidorino moves: Focus Energy, Fury Attack, and Horn Drill in early games are generally considered not worth delaying evolution for; the consistency of powerful TM moves on Nidoking beats them.

A common “pro‑gamer” style recommendation is: don’t overthink a specific Nidorino move when you’ll replace it with better TM moves anyway.

When you might want to wait

There are a few special cases where waiting a bit makes sense:

  1. You really want a specific Nidorino move
    • Some guides mention waiting up to around level 35 if you care about Toxic Spikes in certain games, then evolving after you get it.
 * Others talk about hitting level 43 for Poison Jab, then evolving to get Earth Power on evolution in some later‑gen learnsets.
  1. Challenge runs / Nuzlockes
    • In Nuzlocke discussions, people sometimes fine‑tune the timing based on gym leaders, wanting Thrash by a certain fight, or squeezing one more move from Nidorino before using the stone.
  1. You like playing “hard mode”
    • Some players deliberately delay evolution for fun or personal challenge even if it’s not optimal; the games are easy enough that you can get away with sub‑optimal timing.

Different viewpoints from forum discussion

You’ll see a few recurring opinions in community threads:

  • “Evolve as soon as possible (even around level 16) because Nidorino’s movepool is bad and Nidoking’s stats + Thrash carry you.”
  • “Aim for just before level 23 so you get Thrash on Nidoking and don’t waste time on mediocre Nidorino moves.”
  • “If you’re min‑maxing a later‑gen movepool, consider waiting for Poison Jab/Earth Power or Toxic Spikes, then evolve after that breakpoint.”
  • “Don’t get hung up on exact levels; use the Moon Stone around when you’re happy with its current moves, then patch the rest with TMs.”

Here’s a compact view of the main strategies:

[7][1][10][3] [5][7][1][3] [3] [2][10][3]
Strategy When to evolve Nidorino Why people choose it
Ultra-early evolution As soon as you get a Moon Stone (often soon after level 16) Fast power spike from Nidoking’s stats and TM access; Nidorino’s later moves aren’t valued highly.
Thrash timing Before level 23 Ensures Nidoking learns Thrash on evolution, giving you a strong 120‑base‑power move early.
Move- collector Around level 35–43 (varies by game) Wait for niche moves like Toxic Spikes, Poison Jab, or to trigger Earth Power on evolution in certain games.
TM-first mindset Any time after a few basic moves Focus on Nidoking’s compatibility with strong TMs instead of level‑up moves; timing becomes flexible.

Simple rule of thumb

If you just want a strong team without over‑analyzing:

  1. Get Nidorino (usually around level 16).
  1. Grab a Moon Stone.
  1. Evolve to Nidoking sometime before level 23 , ideally once you’ve got at least a couple of attacks you like.

If you tell me which specific game you’re playing (like FireRed, Yellow, or a Switch title), I can give you a game‑by‑game “evolve at level X” recommendation tailored to that movepool. Information gathered from public forums or data available on the internet and portrayed here.