I’m a big fan of the LEGO minifig. Sure, I’m an AFOL, but I’m primarily a minifig collector, and for me, minifigs are the coolest. So I thought I’d try to work out what actually makes a minifig a minifig.
Is it the simplicity of the parts? Or is it the system: the standard head, torso and hands that everything else plugs into? Swap the legs and it’s still a minifig. Change a hand for a hook and it’s still a minifig. But change too much, as LEGO did with the minidoll, and suddenly it isn’t. So I decided to test the idea properly, with calipers, a light box and a few helpful victims… I mean, spares.
A quick introduction to minifigs
LEGO has been making minifigures for nearly 50 years, and the variety has exploded along with the number of sets and themes. BrickLink now lists 19,145 of them, but they didn’t arrive evenly. There were 27 new figures in 1975, 408 in 2010, and once the licensed themes took hold, 1,079 in 2023. If it carries on at the same pace, we’ll be looking at around 1,500 new minifigs a year by 2030. Star Wars on its own passed 1,000 different minifigs in 2019, which is a lot of stormtroopers.
The story starts before the modern minifig. In 1975, LEGO introduced a small figure with a solid body, immobile arms and legs, and no facial expression. I have a few of these in my collection, and they look sad on the shelf: muted, bound, somehow less human. Three years later, in 1978, the recognisable modern minifigure arrived, with movable arms and legs, hands that could hold things, and the simple face that became so familiar. Designer Jens Nygaard Knudsen was behind the development.
That 1978 design is remarkably persistent. LEGO has changed almost everything around it (faces, hair, hands, legs, arms, accessories and printing), but the basic idea is still recognisable nearly half a century later. And that’s what interests me: what are the bits you can change without losing the identity of the thing?
Nine parts, not three
I used to think a minifig was basically three parts: legs, torso and head. That’s how I sort them at home, for the most part. But break one down and the legs are actually three parts: hips, left leg and right leg. The torso is five: body, left arm, right arm and two identical hands. Add the head and that’s nine parts.
Each of those parts has its own variations: peg legs, hook hands, claws and an ever-growing gallery of bespoke heads. Some heads aren’t built to the classic design at all.
So I measured everything. Here’s a standard minifig, hair not included:
| Part | Measurement |
|---|---|
| Total height (to top of head stud) | 40.3 mm |
| Total height with hair | 43.0 mm |
| Head height | 11.4 mm |
| Head width | 10.1 mm |
| Torso height | 18.6 mm |
| Shoulder width | 11.2 mm |
| Hip width | 14.4 mm |
| Leg length | 16.4 mm |
| Arm span, arms at sides | 25.7 mm |
| Foot length, front to back | 7.8 mm |
| Depth (deepest at the head) | 10.1 mm |
Head, torso and legs overlap slightly where they join, so the individual measurements add up to more than the total height. More on that in the method section at the end.
Legs: where the height lives
For 24 years, every minifig stood on the same size legs. Now there are several different lengths and designs, plus slope pieces and a handful of oddities. I measured every type I could lay my hands on. “Full” is the whole piece, connectors and all. “Showing” is what’s left visible once it’s pushed into a torso.
| Legs | Full | Showing |
|---|---|---|
| Short (no movement) | 14.4 mm | 9.5 mm |
| Medium | 17.6 mm | 12.8 mm |
| Standard | 20.8 mm | 16.2 mm |
| Long | 28.8 mm | 24.2 mm |
| Spring (2003–04 basketball) | 20.9 mm | 15.9 mm |
| Tall slope (dress) | 21.0 mm | 19.1 mm |
| Short slope (2022) | 20.7 mm | 15.9 mm |
Short, medium and standard legs line up beautifully with the LEGO plate grid: 14.4, 17.6 and 20.8 mm. That’s a difference of exactly one plate (3.2 mm) each time. Medium legs arrived in 2018, filling the gap between short and standard legs.
Long legs are the odd ones out. They show 8.0 mm more than standard legs (and the whole piece is 8.0 mm longer too), which is exactly two and a half plates. So they step off the whole-plate pattern the others follow, but by a suspiciously tidy amount, and 8 mm just happens to be the distance between two studs. I still don’t know why. If you do, please put me out of my misery.
The slopes behave themselves. The tall slope shows 19.1 mm, almost exactly two bricks (19.2 mm). The short slope from Taun We in 2022 shows 15.9 mm, close enough to standard legs that a dress and a pair of trousers stand level on a shelf.
Spring legs were a brief, bouncy chapter from LEGO basketball in 2003–04. Mine show 15.9 mm, just under standard.
So what does all that do to a whole figure? Swap the legs on a standard minifig and you get roughly:
- Short legs: 33.6 mm
- Medium legs: 36.9 mm
- Short slope: 40.0 mm
- Tall slope: 43.2 mm
- Long legs: 48.3 mm
These figures are calculated from the component measurements rather than measured as complete figures, so they’re approximate. The interesting one is the last. Put long legs on a minifig and it becomes taller than the minidoll LEGO introduced with Friends: a tiny plastic person, suddenly and surprisingly lanky.
Head
The classic minifig head is wonderfully simple: a cylinder with a curved top and bottom, a lip around the neck and a stud on top. That stud is important. It’s what lets the same basic head accept an absurd range of hats, helmets, hairpieces and other headgear. To a minifig, a hat is just another part, and a bad hair day is a two-second swap.
There are loads of heads now that aren’t this shape, from droids to stylised cartoon characters. I’ve acknowledged them, nodded politely, and then ignored them for the purposes of this experiment, because I wanted to compare the standard head.
Torso
The torso is the constant. Mine measured 18.6 mm tall, 11.2 mm across the shoulders and 14.4 mm at the base. Whatever legs you put underneath it, the torso stays the same.
Accessories can completely change the silhouette. SpongeBob’s headpiece covers most of his torso, and Patrick’s does much the same. Neck brackets can carry air tanks, wings or backpacks (my spaceman’s air pack took his depth to 13.8 mm), and hands can become hooks or claws. But the torso itself doesn’t change.
The arms, however, do. LEGO has made several arm designs, and some are noticeably longer than the classic version.
| Arm | Length |
|---|---|
| Classic | 16.3 mm |
| Basketball | 17.9 mm |
| Tall (long-leg figures) | 20.1 mm |
Tall arms are 3.8 mm longer than classic arms, roughly a quarter longer. That makes sense for long-legged figures such as Woody, otherwise their arms would finish somewhere around their hips. But the proportions don’t quite scale together. Long legs grow by 8.0 mm, while the arms grow by only 3.8 mm, so the result is lanky, but not quite as lanky as the legs would suggest.
Basketball arms are different again. The hand is fixed and doesn’t turn, the arm locks forward, and the whole thing was engineered to hold and throw a basketball. It took four LEGO designers and six engineers a full year to get it right. One play feature, and the arms, hands and legs all changed to serve it.
Minifig vs minidoll
The minidoll arrived with LEGO Friends in 2012, taking the LEGO figure in a noticeably different direction: slimmer, more stylised and closer to human proportions. So, in the name of science, I broke one. I’m sorry.
The arms come off: each is a single slim, curved piece with the hand moulded on, so the wrist doesn’t turn like a traditional minifig hand. They plug into the torso in a similar general way to minifig arms. The legs pull off the torso as one piece. The head stays in one piece, and I wasn’t about to force the issue. The hips might separate with enough force, but they didn’t look like they’d ever go back, so I counted them as one.
By my count, that’s five parts against the minifig’s nine: fewer parts, more shaping and much less mix-and-match.
The minidoll head is a different shape altogether: a tapered chin, no neck lip and a hollow peg for its hair. Yet it fits the same 10.1 × 10.1 mm footprint as the minifig’s head.
| Measurement | Minifig | Minidoll |
|---|---|---|
| Height to top of head stud/peg | 40.3 mm | 45.0 mm |
| Height with hair | 43.0 mm | 47.1 mm |
| Head height | 11.4 mm | 12.0 mm |
| Head width | 10.1 mm | 10.1 mm |
| Shoulder width | 11.2 mm | 12.7 mm |
| Hip width | 14.4 mm | 8.3 mm |
| Arm span, arms at sides | 25.7 mm | 25.5 mm |
| Torso height | 18.6 mm | 14.5 mm |
| Leg length | 16.4 mm | 23.1 mm |
| Foot length, front to back | 7.8 mm | 9.3 mm |
| Depth, bare | 10.1 mm | 10.1 mm |
The minidoll came out 4.7 mm taller than the minifig to the top of the head stud or peg, and 4.1 mm taller with hair.
The shapes are almost opposites. A minifig’s hips are wider than its shoulders, giving it that sturdy, bottom-heavy, built-for-play look. The minidoll flips that around, with shoulders considerably wider than its hips. Legs are about 41% of a minifig’s height and about 51% of a minidoll’s, so the minidoll is much closer to human proportions.
This is also why nobody can agree on a “minifig scale”. Scale a minifig by height and it ends up impossibly wide. Scale it by width and it becomes a toddler. The minifig isn’t in proportion with anything, and somehow, that’s exactly why it works.
Honestly, I didn’t like the minidolls when they came out. They felt too much like modern dolls: big eyes, skinny waists and proportions that were unrealistic yet, awkwardly, more realistic than a minifig’s. My daughter liked them, though, and collected a load, and like so many minifig variants, they’ve grown on me over the years. Still, for me, the original minifig is a mini thing of beauty, and I just can’t champion anything else.
Figdelity
On paper, the minifig shouldn’t work: it’s a cylinder for a head, a wedge for a body and a pair of square feet. But it scores where it matters.
Simplicity is the interesting one, because the two formats are simple in opposite ways. The minifig is simple in shape and complicated in parts. The minidoll is more complex in shape and simpler in construction.
Self-similarity is where the minifig really shines: the same basic torso works with different legs, the hands are interchangeable, and the familiar head-and-hair system allows an enormous amount of mixing and matching. That’s why a shelf of minifigs from decades apart still looks like one big, slightly mismatched family.
Averageness depends on what you’re comparing it with. The minidoll is closer to a real human body. The minifig is closer to the abstract shape we’ve collectively learned to recognise as a LEGO person.
Symmetry is straightforward for both. The moulded figures are symmetrical, then printing, hair and accessories break that symmetry.
Contrast lives in the print. On the same 10.1 mm-wide head, the faces I measured ranged from 5.3 × 4.2 mm to 7.5 × 6.8 mm.
None of this proves Figdelity, but it does suggest that the criteria are picking up on something real, something you can put calipers on, rather than something that’s purely a matter of taste.
Depth
Bare, both formats need just 10.1 mm of shelf depth. It’s what you add that matters. My spaceman with his air pack reached 13.8 mm. A minidoll with a ponytail reached 16.8 mm. The tall slope was 15.9 mm deep at the base, making it the deepest base of anything I measured and roughly twice the length of a minifig’s foot.
Our shelves are six studs deep, about 48 mm. For a single row, that’s more than enough, generous even. Where the depth earns its keep is the second row. Two slope-dress figures back to back come to 31.8 mm, and two ponytailed minidolls come to 33.6 mm, both leaving plenty of room to spare. That’s why most collectors land on two rows: 217 figures to a frame rather than the 112 a single row holds.
Height is the other thing to watch. A long-legged minifig with hair, or a minidoll at 47.1 mm, stands noticeably taller than the rest of the line-up.
When we designed our frames, they were made to hold a Collectible Minifigures series, which at the time meant 16 figures per series. We figured four studs per figure was about perfect and settled on 64 studs wide. The frame is square, so once the shelf thickness was added, it worked out neatly to seven shelves. Each shelf turns out to fit one baseplate, six bricks and a tile to the millimetre, but that was more luck than design.
So far we haven’t had any trouble with minifig heights: Woody and the Avatar figures fit fine, and even Marge, beehive and all, gets in. I think a few of the Trolls struggle, and obviously we can’t fit the big figs (yet).
Method
Everything was measured with digital calipers to 0.1 mm, with figures standing, arms at their sides and heads facing forward. Heights go to the top of the head stud (or the minidoll’s peg), without hair unless otherwise stated. I measured several examples of each figure or part where possible and took an average.
Head, torso and leg lengths overlap at the neck and hips, so they add up to more than the total height. That’s why the percentages use total height.
I went in expecting round numbers, but LEGO doesn’t design in round metric millimetres. It works on its own grid: studs are 8 mm apart, plates are 3.2 mm tall and bricks are 9.6 mm tall. Readings such as 10.1 mm are what that grid looks like once you add a little moulding tolerance.
So, what makes a minifig a minifig?
The torso, the hands and that familiar cylindrical head are the constants. The legs can change the height by nearly 15 mm, the arms can stretch to keep up, and accessories can completely change the silhouette, yet it’s still unmistakably a minifig.
The minidoll changes almost everything below the neck and swaps the cylinder for a sculpted head. It can occupy roughly the same space on a shelf, use many of the same accessories and still belong to the wider LEGO system, but it reads as something else entirely.
So a minifig isn’t defined by how tall it stands or what it’s wearing. It’s defined by what stays the same.
This is still a small sample, and I’d happily be corrected by a bigger one. If you’ve measured your own, especially long legs, odd slopes or a minidoll you’ve taken apart, send me your numbers and I’ll add them.
Update, [4th Oct 2026]: Posted this on r/lego and got an answer within minutes. The 8mm is the width of a standard brick, and long legs apparently have an extra anti-stud clip moulded into the back so the figure can still sit down properly despite the added length, that extra material is where the odd 2.5-plate offset comes from. I checked my own long-leg pieces against standard ones and can confirm this, mystery solved. Thanks to everyone who weighed in, this is exactly why I asked.
Next post – Ranking My Shelves: Which Minifig Series Earns the Highest Figdelity Score.
Sources
- LEGO: Role Play (LEGO History)
- LEGO: Little Figure, Big Story, celebrating the 40th anniversary of the LEGO minifigure
- BrickLink and Rebrickable catalogue data (my own count, October 2026)
- Wikipedia: Lego minifigure
- Brickipedia: Mini-doll figure
- Brickipedia: Basketball
- StoneWars: Revised Minifigures for the LEGO SMART Play System
- BrickNerd: Mangled Minifigs
- Brickset: The new medium-sized legs
- Blocks Magazine: The different heights of LEGO minifigures
- Eurobricks: Calculating an accurate scale of LEGO figures