Size matters. Well, at least in the world of pocket monsters where a tiny yellow mouse can stand toe-to-toe with a literal god of space and time. But when you actually start digging into a list of pokemon by weight, things get weird. Fast. We aren't just talking about "big" and "small" here. We are talking about the physics-defying, logic-shredding numbers that Game Freak has been plugging into the Pokedex since 1996.
Ever looked at a Charizard and thought, "Yeah, I could probably lift that"? You actually might be right. Charizard weighs about 90.5 kg (roughly 199.5 lbs). That is basically a middleweight boxer. For a fire-breathing dragon that stands five-foot-seven, that’s shockingly light. It’s these kinds of discrepancies that make weight-watching in the Pokemon world so addictive for fans who love the nitty-gritty stats.
The Heavy Hitters That Break the Scale
When most people go looking for a list of pokemon by weight, they expect to see the legends at the top. And they are there, but the "why" is more interesting than the "who."
Take Celesteela. This Ultra Beast is a massive, bamboo-like rocket ship. It ties for the heaviest spot at exactly 999.9 kg (about 2204.4 lbs). Why that specific number? Because for the longest time, the handheld games literally couldn't track a weight higher than that in their code. It’s a hard cap. It’s the same reason Cosmoem, a tiny little orb you can hold in your hand, also weighs 999.9 kg.
Think about that for a second.
A pokemon that is only 4 inches tall weighs as much as a literal spaceship. This happens because Cosmoem is based on a protostar—the incredibly dense core of a collapsing nebula. It’s essentially a tiny bowling ball made of concentrated star-stuff. If you tried to pick it up, you wouldn't just hurt your back; you’d probably fall through the crust of the Earth.
Then there’s Primal Groudon. It also hits that 999.9 kg limit. Before it undergoes Primal Reversion, regular Groudon clocks in at 950 kg. It’s the king of the land, literally carving continents. But even with all that power, it’s technically "lighter" than a tiny golden nugget from outer space.
The Featherweights You’ll Probably Step On
On the flip side, the bottom of the list is just as crowded. We have a massive tie for the lightest Pokemon ever discovered.
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- Gastly
- Haunter
- Flabébé
- Cosmog
- Kartana
All of these weigh a measly 0.1 kg (0.2 lbs). For Gastly and Haunter, it makes sense. They are made of gas. They are basically sentient smog. But Kartana? Kartana is an Ultra Beast made of folded paper that is sharp enough to cut through steel. It’s a literal paper samurai.
Honesty, the fact that Kartana weighs the same as a ghost is one of those "Pokemon logic" moments that makes the competitive community chuckle. If a gust of wind catches your Kartana, is it just gone? Probably.
Why Weight Actually Matters in Battle
This isn't just trivia for the sake of trivia. If you’re playing competitive VGC or climbing the ladder in Pokemon Showdown, weight is a mechanical lever. It changes how much damage you take and how much you deal.
Moves like Low Kick and Grass Knot calculate damage based on the target's weight. If you use Low Kick against a Snorlax (460 kg), it’s going to hit like a freight train. If you use it against a Pikachu (6 kg), it’s basically a stubbed toe.
Then you have Heavy Slam and Heat Crash. These moves do more damage the heavier the user is compared to the opponent. This is why Melmetal is such a nightmare. At 800 kg, its Heavy Slam is almost always hitting at maximum power. It’s like being hit by a runaway semi-truck made of liquid mercury.
The Mid-Tier Weight Oddities
The middle of the list of pokemon by weight is where the real "wait, what?" moments live.
Did you know Wailord is actually less dense than air? Wailord is massive—it’s 14.5 meters (47 feet) long. But it only weighs 398 kg. If you do the math on its volume versus its weight, Wailord wouldn't just float on water; it would literally drift away into the sky like a giant blue parade balloon. It is the "Float Whale" Pokemon for a reason, but seeing the numbers on paper really hammers home how hollow that big guy must be.
Compare that to Mudsdale. A horse. Just a big, sturdy draft horse. Mudsdale weighs 920 kg. It is more than twice as heavy as a whale the size of a Boeing 737. Mudsdale is heavy because its body is covered in layers of protective mud that dries into a stone-like crust. It’s a biological tank.
A Practical Breakdown of Weight Tiers
If you're trying to categorize these for your own team building, it's easier to look at them in tiers rather than a raw 1-to-1025 list.
The Tectonic Tier (800kg - 999.9kg)
This is where the titans live. Eternatus, Guzzlord, Stakataka, and the aforementioned Primal Groudon. These are the Pokemon that trigger the highest damage multiplier for weight-based moves. If you're using these, you aren't worried about Grass Knot; you're worried about the fact that you move last because you're so bulky.
The Heavyweights (200kg - 799kg)
This is the "Snorlax Zone." You'll find Metagross here (550 kg) and Dialga (683 kg). These Pokemon are usually made of metal, rock, or are just exceptionally "thicc." They are solid anchors for any team.
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The Average Joes (50kg - 199kg)
Most fully evolved starters land here. Blaziken is 52 kg. Rillaboom is 90 kg. It’s the most "human" weight class. Most of these Pokemon can be lifted by a very strong person, or at least dragged.
The Lightweights (under 50kg)
This is almost everything else. From Meowth (4.2 kg) to Eevee (6.5 kg). Most of the "cute" mascots live here. They are fast, they are nimble, and they absolutely hate being hit by a Heavy Slam from a Copperajah.
The Mystery of the Missing Mass
We have to talk about Gengar. Gengar is the shadow of a person (allegedly). It weighs 40.5 kg. That is remarkably heavy for something that is supposed to be a shadow. For comparison, Dragonair—a massive serpent—weighs only 16.5 kg.
Theories abound here. Some fans suggest Gengar’s weight comes from the "stolen souls" it keeps inside its body. Others think it’s just the physical manifestation of the gas from Gastly becoming more condensed as it evolves. Either way, it’s a weird outlier that makes a simple list of pokemon by weight feel like a mystery novel.
How to Use This Knowledge
If you’re a collector, weight doesn't change much. But if you’re a player, you need to check the weight of your lead Pokemon.
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- Check for Weight-Based Weaknesses: If your favorite Pokemon is over 200 kg, you need to be terrified of Grass Knot. It is a common coverage move on special attackers that will ruin your day.
- Optimize Heavy Slam: If you’re using a Pokemon like Copperajah (650 kg) or Aggron (360 kg), give them Heavy Slam. It’s often better than Iron Head because the weight discrepancy in your favor is usually massive.
- The Float Stone Trick: There is actually a held item called the Float Stone that halves the wearer's weight. It’s mostly niche, but it can save a heavy Pokemon from taking max damage from Low Kick.
The list of pokemon by weight is more than just a table of numbers. It’s a look into the biology (and the technical limitations) of the Pokemon world. It tells us that some creatures are made of stars, some are lighter than air, and some are just really, really heavy horses.
When you're out there catching 'em all, maybe take a second to look at the summary screen. You might be surprised to find out that the "beast" you just caught is actually lighter than your backpack.
Actionable Insights for Trainers
To apply this to your game, start by identifying the heavy hitters on your current roster. If you have a Stakataka or a Groudon, you must account for the fact that opponents will use their own mass against them. Conversely, if you're running a fast, light team, consider carrying a Weight-based move as a "tech" choice to take down the walls that your regular attacks can't dent. You can also experiment with the Heavy Ball in games like Pokemon Scarlet and Violet or Legends: Arceus; these balls have a higher catch rate based on how much the target weighs. Checking the Pokedex weight entry before an encounter can literally save you a Master Ball.