Is 15mm Really 1/100? And Why Size Drift Exists
15mm is one of the most widely used scales in historical wargaming.
Napoleonic corps-level battles.
WW2 battalions and regimental actions.
Ancients mass formations.
Multi-base rule systems.
For many players, 15mm represents the sweet spot between table coverage and visual clarity.
And yet, even experienced hobbyists regularly ask the same questions.
Is 15mm the same as 1/100?
Why do some 15mm figures look closer to 18mm?
Why don’t all 15mm ranges match when placed side by side?
What height should 15mm actually be?
To answer those questions properly, we have to begin with mathematics — not marketing.
The Mathematics Behind 15mm
All accurate scale conversion begins with a fixed reference height.
The established eye-height constant used in miniature conversion is 1610 millimetres, representing average adult male eye level.
When converting millimetre height to ratio scale using anatomical eye-level measurement, the formula is straightforward:
1610 divided by miniature height equals ratio scale.
When we apply that to 15mm:
1610 ÷ 15 = 107.3
That means true 15mm corresponds to approximately 1/107 scale.
Not 1/100.
Not 1/120.
Approximately 1/107.
This is the mathematical anchor when measuring base of foot to eye level.
If a figure measures 15mm anatomically, it aligns proportionally with 1/107.
That is the reality.
So Why Do People Say 15mm Is 1/100?
Because 1/100 vehicles are extremely common — especially in WW2 modelling.
Many gamers pair 1/100 tanks with 15mm infantry and assume they are identical in scale.
Let’s compare properly.
Using the same 1610 constant:
1610 ÷ 100 = 16.1mm
That means a true 1/100 human figure should measure approximately 16.1mm to eye level.
Compare that to 15mm:
15mm ≈ 1/107
16.1mm ≈ 1/100
They are close — roughly a millimetre apart.
On the tabletop, that difference may be subtle, particularly because vehicles visually dominate infantry. But mathematically, they are not identical.
This small discrepancy is tolerated in gaming communities because it rarely breaks immersion. But from a strict proportional standpoint, 15mm is not 1/100.
Understanding that distinction is the first step toward clarity.
Why Some “15mm” Figures Look Like 18mm
This is where scale drift enters the discussion.
Over the past two decades, many manufacturers have gradually increased figure size while keeping the same label.
The reasons are understandable:
More room for sculpt detail.
Stronger casting.
Better tabletop visibility.
Market expectation of presence.
Across publicly available manufacturer listings and hobbyist reports as of 25/02/2026, some “15mm” ranges measure:
Approximately 15mm to eye level in classic metal sculpts.
Approximately 16mm–17mm overall height in many modern lines.
Some approaching 17mm–18mm full head height in newer digital sculpts.
This gradual inflation leads to informal terms such as “large 15mm” or even “18mm.”
In some cases, what is marketed as 15mm may measure closer to 16.5mm or 17mm to eye level.
That shifts it proportionally closer to 1/100 than 1/107.
The label remains 15mm.
The physical height drifts.
That is scale creep.
Classic 15mm vs Large 15mm
Not all 15mm is created equal.
Classic 15mm figures, often metal cast, typically measure close to 15mm to eye level. They tend to have slimmer proportions and correspond closely to 1/107 scale.
Large 15mm figures are slightly taller and often thicker in sculpting style. Many measure closer to 16.5mm or 17mm to eye level, pushing them toward 1/100 proportional territory.
When you rank classic 15mm beside large 15mm, the difference becomes visible in shoulder height and head alignment.
Without a declared measurement standard, mixing brands can create uneven formations.
This is not necessarily a flaw in any particular range. It is a result of gradual industry evolution combined with ambiguous measurement conventions.
15mm and 1/100 Vehicles – The Compatibility Question
Because 1/100 armour is so common in WW2 gaming, compatibility becomes important.
If your infantry measures a strict 15mm to eye level, they are proportionally smaller than 1/100 vehicles.
If your infantry measures 16mm–17mm to eye level, they align much more closely with 1/100.
This explains why some 15mm ranges look perfectly compatible with 1/100 tanks, while others appear slightly undersized.
The variation does not come from deception. It comes from measurement reference and scale drift.
The only way to know where your figures sit proportionally is to measure them anatomically.
Heroic vs True Scale at 15mm
At smaller scales, exaggeration may seem minor — but it still affects overall proportion.
Heroic tendencies in 15mm can include slightly enlarged heads, thicker rifles, or chunkier limbs to improve durability and paint visibility.
True scale 15mm preserves anatomical realism. Head-to-body ratio remains consistent. Equipment thickness reflects historical accuracy rather than exaggerated robustness.
Because 15mm is small, even a one millimetre increase in head size shifts the overall impression of scale.
Battle Honours 3D produces true scale 15mm miniatures aligned with mathematical conversion anchors rather than stylistic inflation.
Modern resin production allows clarity without exaggeration.
How to Measure 15mm Figures Properly
If you want to understand what your 15mm figures actually are, measurement is simple.
Place the figure on a flat surface.
Measure from the base of the foot.
Measure to the bridge of the nose.
Ignore helmet tops, plumes and tall shakos.
If the measurement is:
Approximately 15mm → close to 1/107
Approximately 16mm → approaching 1/100
Approximately 17mm → large 15mm or near 1/95–1/100
This anatomical reference removes distortion and provides proportional clarity.
Once measured properly, scale ambiguity disappears.
How Battle Honours 3D Defines 15mm
Battle Honours 3D anchors 15mm correctly.
1610 ÷ 107 ≈ 15mm.
Every BH3D 15mm figure is measured base of foot to bridge of nose.
Not to the top of a helmet.
Not to plume height.
Not to the tallest sculpted detail.
This ensures mathematical consistency, cross-range compatibility, and protection against silent inflation.
Our 15mm is 15mm anatomically.
If you want to compare our figures to your existing collection, measure yours using the same standard first.
Objective measurement removes speculation.
Why Scale Discipline Matters in 15mm Gaming
15mm is commonly used for large battles where dozens or hundreds of figures stand in formation.
At that density, even one millimetre difference becomes noticeable across ranks.
Consistent measurement produces clean shoulder lines and uniform formation height.
Inconsistent measurement produces uneven visual rhythm.
Scale discipline is not cosmetic at this level. It affects the entire aesthetic of the battlefield.
Battle Honours 3D maintains internal proportional consistency so that figures released today will align with figures released years from now.
Long-term compatibility is intentional, not accidental.
Final Word on 15mm Scale
15mm is not arbitrary.
Mathematically, it corresponds to approximately 1/107 scale.
Confusion arises when manufacturers measure differently, when headgear inflates height, and when scale drift accumulates over time.
If you want clarity, measure anatomically.
If you want consistent formations and predictable compatibility, choose manufacturers who declare and apply their measurement standard clearly.
Battle Honours 3D applies strict anatomical measurement discipline to ensure that our 15mm figures align with established mathematical conversion standards — delivering realism, compatibility and long-term consistency.
Industry Measurement Notice
All references to third-party manufacturers reflect publicly available information and commonly reported measurements as of 25/02/2026. Values are approximate and may vary by pose, sculpting style, tooling generation or measurement method.
This article is provided for educational clarification of scale conventions. No assertion is made regarding the practices or accuracy of any other manufacturer.
If clarification or correction is required, please contact us and we will review and update accordingly.
