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HM

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A Hidden Machine (Japanese: ひでんマシン Secret Machine), HM for short, is an item that, like a TM, is used to teach a Pokémon a move.

HM moves, like Fly, have effects outside of battle
HM artwork for Pokémon Red and Green

The difference between a TM and an HM is most pronounced in the earlier games in the series, where TMs were single-use items while HMs could be used an unlimited amount of times after they were obtained, and unlike TMs could not be tossed or sold for money. Additionally, the moves contained within an HM cannot be forgotten by Pokémon under normal circumstances. An HM move can be used in the field by a Pokémon even if the Pokémon has fainted during battle or has run out of PP (using it in the field does not consume PP).

All HM moves have the ability to be used outside of battle in the games they are HMs in, though a move's ability to be used outside of battle does not mean that it is necessarily an HM move. Except for Generation V, specific Badges must be obtained by the player before they can use an HM move outside of battle to advance the game's storyline.

A Pokémon knowing an HM move cannot be sent forward from Generation III to Generation IV or from Generation IV to Generation V unless the HM move is removed (via Move Deleter). Dive prevents sending forward from Pokémon FireRed and LeafGreen despite not being considered an HM by those games, while Defog and Whirlpool only prevent Pokémon being sent forward from the games they are an HM in. Pokémon with Whirlpool can freely be sent into Pokémon HeartGold and SoulSilver from Generation III, while Pokémon with Dive can freely be sent into Generation V games. In Generation V, Pokémon knowing an HM move cannot be traded via infrared communications if they are in the player's party, to prevent a player from potentially becoming stuck somewhere that requires an HM move to escape.

Unlike in previous inter-generational transfers, Pokémon sent from Generation V to Generation VI that know HM moves do not require these moves to be deleted. Pokémon that know HM moves can also be freely deposited and withdrawn from Pokémon Bank.

Generation I

In Generation I, five of the 165 moves are HM moves, of which three (Cut, Surf, and Strength) are required for completing the game. Of these five, four of them remain as HM moves even through Generation VI, while the fifth, Flash, retains the ability to be used outside of battle (to light dark caves in Generation V, or reduce encounters with wild Pokémon in Generation VI).

HM Move Location found Badge required
 
HM01 		Cut S.S. Anne   Cascade Badge
 
HM02 		Fly Route 16   Thunder Badge
 
HM03 		Surf Safari Zone   Soul Badge
 
HM04 		Strength Fuchsia City   Rainbow Badge
 
HM05 		Flash Route 2   Boulder Badge

None of these moves are able to be forgotten in Generation I, and a Pokémon with these moves cannot be raised by the Pokémon Day Care on Route 5. Unlike in later generations, all of these moves must be selected from the Pokémon screen to be used.

Generation II

In Generation II two new moves become HMs. The five HMs from Generation I return, while a new move, Whirlpool, becomes an HM, and an old move, Waterfall, becomes another HM.

HM Move Location found Badge required
 
HM01 		Cut Ilex Forest   Hive Badge
 
HM02 		Fly Cianwood City   Storm Badge
 
HM03 		Surf Ecruteak City   Fog Badge
 
HM04 		Strength Olivine City   Plain Badge
 
HM05 		Flash Sprout Tower   Zephyr Badge
 
HM06 		Whirlpool Rocket Hideout   Glacier Badge
 
HM07 		Waterfall Ice Path   Rising Badge

A Move Deleter was added to the games, mostly with the intention of making possible the ability to delete Generation II moves that a Generation I Pokémon had learned in order to be able to trade it back, though with the side effect of HM moves now being able to be forgotten.

From this generation on, Pokémon with HM moves are allowed in the Day Care, and fathers with HM moves will pass the moves down to their children as they would a TM move. HM moves can also be used just by checking the obstacle that the HM will clear, such as surfable water or a movable rock.

Generation III

Hoenn

In Hoenn one of the Generation II HMs lost its status, while another two moves became HMs, raising the number of HMs to eight.

HM Move Location found Badge required
 
HM01 		Cut Rustboro City   Stone Badge
 
HM02 		Fly Route 119   Feather Badge
 
HM03 		Surf Petalburg City   Balance Badge
 
HM04 		Strength Rusturf Tunnel   Heat Badge
 
HM05 		Flash Granite Cave   Knuckle Badge
 
HM06 		Rock Smash Mauville City   Dynamo Badge
 
HM07 		Waterfall Cave of OriginRS   Rain Badge
Sootopolis CityE
 
HM08 		Dive Mossdeep City   Mind Badge

Kanto

In Kanto, due to a lack of use for Dive, HM08 is unobtainable and can only be accessed through cheating. The first five HMs can be acquired through the same methods as in Generation I, while HM06 and HM07 can be found in the Sevii Islands later in the game.

HM Move Location found Badge required
 
HM01 		Cut S.S. Anne   Cascade Badge
 
HM02 		Fly Route 16   Thunder Badge
 
HM03 		Surf Safari Zone   Soul Badge
 
HM04 		Strength Fuchsia City   Rainbow Badge
 
HM05 		Flash Route 2   Boulder Badge
 
HM06 		Rock Smash Ember Spa   Marsh Badge
 
HM07 		Waterfall Icefall Cave   Volcano Badge

Generation IV

Sinnoh

In Sinnoh, for the first time, one of the original HMs lost its status to a new move, while HM08 was brought back as a different move.

HM Move Location found Badge required
 
HM01 		Cut Eterna City   Forest Badge
 
HM02 		Fly Veilstone City   Cobble Badge
 
HM03 		Surf Celestic Town   Relic BadgeDP
  Fen BadgePt
 
HM04 		Strength Lost TowerDP   Mine Badge
Iron IslandPt
 
HM05 		Defog Great MarshDP   Fen BadgeDP
Solaceon RuinsPt   Relic BadgePt
 
HM06 		Rock Smash Oreburgh Gate   Coal Badge
 
HM07 		Waterfall Sunyshore City   Beacon Badge
 
HM08 		Rock Climb Route 217   Icicle Badge

Johto and Kanto

Defog lost its HM status in Johto for the return of Whirlpool; all other HMs retained their status from the prior Sinnoh games.

HM Move Location found Badge required
 
HM01 		Cut Ilex Forest   Hive Badge
 
HM02 		Fly Cianwood City   Storm Badge
 
HM03 		Surf Ecruteak City   Fog Badge
 
HM04 		Strength Route 42   Plain Badge
 
HM05 		Whirlpool Team Rocket HQ   Glacier Badge
 
HM06 		Rock Smash Route 36   Zephyr Badge
 
HM07 		Waterfall Ice Path   Rising Badge
 
HM08 		Rock Climb Pallet Town   Earth Badge

Generation V

HMs were reduced to six in Generation V; HM07 and HM08 no longer exist in the coding of Pokémon Black and White. Dive returns for use in Unova. This generation marks the first time that HM moves do not require Gym Badges for use outside of battle. Although most HM moves cannot be obtained before earning certain Gym Badges, if the player obtains a Pokémon that has learned an HM move through other means (via level-up, trading, etc.) the player will be able to use the HM in the field without restrictions.

When a move is replaced by an HM, the HM move takes on the current PP of the replaced move until healed or replenished. The same also applies for replacing old moves with TMs.

HM Move Location found
 
HM01 		Cut Striaton CityBW

Virbank City B2W2

 
HM02 		Fly Driftveil City BW

Route 5 B2W2

 
HM03 		Surf Twist Mountain BW

Route 6 B2W2

 
HM04 		Strength Nimbasa City BW

Castelia Sewers B2W2

 
HM05 		Waterfall Route 18BW

Victory RoadB2W2

 
HM06 		Dive Undella Town

Generation VI

HMs have returned to requiring a Badge to use them.

When a move is replaced by an HM, the HM move takes on the current PP of the replaced move until healed or replenished. The same also applies for replacing old moves with TMs.

Kalos

HMs were reduced to five in Kalos, with HM06 being removed. The HMs are the same as Generation V.

Though Rock Smash is not an HM, it can still be used outside of battle, unlike in Generation V.

HM Move Location found Badge required
 
HM01 		Cut Parfum Palace   Bug Badge
 
HM02 		Fly Coumarine City   Plant Badge
 
HM03 		Surf Shalour City   Rumble Badge
 
HM04 		Strength Cyllage City   Cliff Badge
 
HM05 		Waterfall Route 19   Iceberg Badge

Hoenn

HMs were increased to seven in Hoenn. Rock Smash and Dive regained their HM status.

HM Move Location found Badge required
 
HM01 		Cut Rustboro City   Stone Badge
 
HM02 		Fly Route 119   Feather Badge
 
HM03 		Surf Petalburg City   Balance Badge
 
HM04 		Strength Route 112   Heat Badge
 
HM05 		Waterfall Sootopolis Gym   Rain Badge
 
HM06 		Rock Smash Mauville City   Dynamo Badge
 
HM07 		Dive Mossdeep City   Mind Badge

Gallery

  • Artwork of Cut

  • Artwork of Fly

  • Artwork of Surf

  • Artwork of Strength

  • Artwork of Flash

  • Artwork of Whirlpool

  • Artwork of Waterfall

  • Artwork of Rock Smash

  • Artwork of Dive

  • Artwork of Defog

  • Artwork of Rock Climb

In the anime

 
HM01 in Pokémon Origins

In Pokémon Origins

HM01 (Cut) made an appearance in the Pokémon Origins episode File 2: Cubone. Much like in Pokémon Red and Blue, it was given to Red by the captain of S.S. Anne after helping him recover from his seasickness.

In the manga

 
HM03 in Pokémon Adventures

In the Pokémon Adventures manga

In What a Dragonite, Red was revealed to have already obtained HM01 (Cut) for his Ivysaur, HM04 (Strength) for his Snorlax, and HM05 (Flash) for his Pikachu, one of which he had won in a bike race in Wake Up—You're Snorlax!. When he tried to get his hands on HM03 (Surf), he ran into some trouble with a wild Dragonite, eventually leading to the Hidden Machine getting destroyed. To help him, Misty gave Red her Gyarados in exchange for his Krabby, since it already knew Surf.

It was also revealed that Blue had found HM03 before Red, fueling the young Trainer's determination of finding it too.

In the Pokémon Zensho manga

In Vermilion City, after defeating Lt. Surge, Satoshi received the HM for Cut from the captain of S.S. Anne, whom he had met earlier.

Trivia

  • Rock Smash is the only HM with a unique type. All other HM moves share their type with at least one other HM move.
  • Tracey's Scyther is the first Pokémon belonging to a main character of the anime to have used a current HM move, Cut. It wasn't until the Diamond & Pearl series that one of Ash's Pokémon used a current HM move; Ash's Grotle used Rock Climb.
    • Although debatable, other Pokémon may have used Surf, Dive, and Fly throughout the anime; although, they were not directly ordered to use the move.
  • The only current HM moves that are able to be learned by Pokémon by level-up are Fly and Waterfall. Former HMs Flash, Whirlpool, Defog, Rock Smash, Rock Climb, and Dive, are also learnable by level, but only since their loss of HM status. Moves that regain their HM status, like Whirlpool and Dive did, remain learnable by level-up. Waterfall remains the only HM move that has been learnable by level-up since it was introduced as a move, prior to gaining HM status.
  • In Generation IV, all moves that were at one time an HM are learnable, with Flash being available by TM70 and Dive being available by Move Tutor. Defog and Whirlpool, which replace each other in the Sinnoh- and Johto-based games, are both HM05.
    • Generation IV is the only generation in which two moves share the same HM number.
  • HM moves have so far been only of the Flying, Fighting, Water, and Normal types.
  • In Pokémon Gold, Silver, and Crystal, on Route 20, Swimmer Lori states "Surf is no longer the only HM move you use in water" when she is defeated. This is a reference to Generation I, where the only HM usable in the water was Surf.
  • In the core series, the only ways to delete an HM move are through the Move Deleter and the Pokémon Day Care. However, the move can be deleted by normal means in a game in which it is not taught through an HM.
  • The first four HMs, Cut, Fly, Surf, and Strength, have existed in every main-series Pokémon game.
  • The Mineral Badge of Johto is the only Badge, prior to Generation V, which does not enable the use of an HM in any game it is present in.
  • Dive is the only HM in Generation V that is not found in a different location between Black and White and Black 2 and White 2.

In other languages

Language Title
  Danish Skjult maskine
  French Capsule Secrète (CS)
  German Versteckte Maschine (VM)
  Italian Macchina Nascosta (MN)
  Korean 비전머신 Secret Machine
  Spanish Máquina Oculta (MO)
  Swedish Gömd maskin
  Vietnamese Cỗ máy bí truyền

See also


Lists of TM, HM, and TR locations
In the core series: Generation I • Generation II • Generation III • Generation IV • Generation V • Generation VI

Generation VII • Generation VIII (SwSh • BDSP) • Generation IX

In spin-off games: Mystery Dungeon series


Consumables: Food • Gummis • Seeds • Berries • Health drinks
Held items: Glasses • Scarves • Recruitment-affecting items
Miracle and Wonder Chests • Seven Treasures
Space Globe • IQ Booster • Flags • Looplets
Objects: Wonder Orbs • Throwing items • HMs • Used TMs • TMs • Keys
Link Box • Gabite Scale • Gracidea • Friend Gifts • Devices
Emeras • Progress Devices • Wands • Djinn's Bottle
Special: Rescue Team Starter Set • Toolbox • Exploration Team Kit
Treasure Bag • Treasure Collection • Mystery Dungeon evolutionary items
Teleport Gem • Colored Wings • Wishing Stone • Music Box • Vortex Stone
Treasure Boxes • Mystery Part • Secret Slab • Exclusive items
Relic Fragment • Wonder Egg • Lost Loot • Sky Gift
Lookalike Items • Prize Tickets • Gates to Infinity exclusive items
Manuals • Entercards • Lucha Token • Connection Orb


  This article is part of Project Moves and Abilities, a Bulbapedia project that aims to write comprehensive articles on two related aspects of the Pokémon games.
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