What Blender unit scale should I use for Unity?

Use scale 1.0 (metres). Unity's 1 unit equals 1 metre, which matches Blender's default. When exporting FBX, set Apply Scalings to 'FBX All' to bake the scale correctly. A 1.75 BU character will be 1.75 metres tall in Unity.

What Blender unit scale should I use for Unreal Engine?

Use scale 0.01 (centimetres). Unreal Engine's 1 unit equals 1 centimetre. With Blender scene scale at 0.01, 1 BU = 1 cm = 1 Unreal unit. Export FBX with Apply Scalings set to 'FBX All' and import scale at 1.0 — no further scaling needed.

How do I convert inches to Blender units?

Multiply inches by 0.0254 to get metres, then divide by your scene unit scale. At default scale 1.0: 1 inch = 0.0254 BU, 12 inches (1 foot) = 0.3048 BU, 69 inches (average person) = 1.7526 BU.

What Blender unit scale should I use for 3D printing?

Use scale 0.001 (millimetres). Most 3D printers work in millimetres, so with scene scale 0.001, 1 BU = 1 mm. This gives you maximum precision for small parts. A 50 mm object would be 50 BU in your scene.

How tall should a human character be in Blender units?

At default scale (1.0), an average adult human character should be 1.75 to 1.80 Blender Units tall — matching real-world metres. For Unity game assets keep this scale. For Unreal Engine, use scale 0.01 and make the character 175 to 180 BU tall.

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Blender Units & Scale
Calculator

Type any real-world measurement and instantly get the exact Blender units value. Plus scene scale recommendations and game engine export settings for Unity, Unreal, and Godot.

Reference Guide

Which Scene Unit Scale Should You Use?

The Unit Scale setting (Properties → Scene → Units) controls how Blender interprets your measurements. Click a card to apply it to the calculator above.

1.0

Meters (Default)

1 BU = 1 metre. Best for characters, props, architectural scenes, and Unity game assets. The most common setup.

Characters Architecture Unity Godot

0.01

Centimeters

1 BU = 1 cm. Great for small objects, product design, or Unreal Engine workflows where 1 unit = 1 cm.

Product Design Unreal Engine Hard Surface

0.001

Millimeters

1 BU = 1 mm. For highly detailed mechanical parts, engineering, or 3D printing where precision matters most.

Engineering 3D Printing Jewelry

0.1

Decimeters

1 BU = 10 cm. An uncommon middle ground, sometimes used for mid-scale industrial or furniture modeling.

Furniture Industrial

Common Object Sizes

Real-World Reference at Your Scale

How big should everyday objects be in Blender? This table updates as you change the scene scale above.

Showing values at Scene Unit Scale: 1.0 (Meters)

Object	Real-World Size	Blender Units (BU)	Notes

Export Guide

Game Engine Export Settings

Getting the scale wrong on export is one of the most common Blender headaches. Pick your engine to see exact export settings.

Your Blender scene scale:

Unity

1 Unity unit = 1 metre

Unreal Engine

1 Unreal unit = 1 centimetre

Godot

1 Godot unit = 1 metre (same as Blender default)

Common Questions

Blender Units — Quick Answers

How many Blender units is 1 metre?

At the default scene unit scale of 1.0, exactly 1 Blender Unit = 1 metre. A 1.75 m character = 1.75 BU. A 4.5 m car = 4.5 BU. This is the most common Blender setup.

What is the default Blender unit scale?

The default is 1.0 (metres). Change it under Properties → Scene → Units → Unit Scale. At 1.0, one Blender Unit equals one real-world metre.

How do I convert centimetres to Blender units?

At default scale (1.0): divide cm by 100. So 175 cm ÷ 100 = 1.75 BU. Or set your scene unit scale to 0.01 — then 1 BU = 1 cm and you work directly in centimetre values.

What Blender scale should I use for Unity?

Use scale 1.0 (metres). Unity's 1 unit = 1 metre, matching Blender's default. Export FBX with Apply Scalings → FBX All. Your character will be the correct height in Unity automatically.

What Blender scale should I use for Unreal Engine?

Use scale 0.01 (centimetres). Unreal's 1 unit = 1 cm. With Blender at 0.01, a 175 BU character = 175 cm = 1.75 m — exactly right. Export FBX with Apply Scalings → FBX All, import scale 1.0.

How tall should a human be in Blender units?

At scale 1.0: 1.75–1.80 BU (matching real metres). At scale 0.01 (Unreal): 175–180 BU. At scale 0.001 (mm): 1750–1800 BU. Use the calculator above for any other scale.

What scale should I use for 3D printing in Blender?

Use scale 0.001 (millimetres). Most slicers work in mm, so 1 BU = 1 mm gives you maximum precision. A 50 mm part = 50 BU in your scene.

Blender Units & ScaleCalculator

Which Scene Unit Scale Should You Use?

Real-World Reference at Your Scale

Game Engine Export Settings

Blender Units — Quick Answers

Related Guides

Blender Units & Scale
Calculator