Units
The scene is metres and radians underneath, always. Units change how numbers are shown to you and typed by you — nothing else. That makes them a local preference: you can work in inches while a peer works in centimetres, and you are both editing the same scene.
Choosing your units
Settings ▸ Scene ▸ Units:
| Setting | Choices | Applies to |
|---|---|---|
| Length | m, cm, mm, in, ft | positions, the object origin, snapping steps, bevel width, merge distance |
| Angle | degrees, radians | rotations and the rotation snap step |
Fields that are not a distance or an angle are deliberately left alone — a roughness of 0.4, a duration in seconds, a texture pixel and a subdivision count are not measurements, and a unit picker on them would be noise.
Typing a unit
You do not have to change the setting to enter a value in another unit. Any of these fields accepts a suffix, whatever is currently on display, and converts it as you type:
| You type | You get |
|---|---|
12cm |
0.12 m |
250mm |
0.25 m |
4in |
0.1016 m |
1.5ft |
0.4572 m |
2' |
0.6096 m |
6" |
0.1524 m |
90deg |
a quarter turn |
1.57rad |
the same quarter turn |
A bare number means the unit on display. So in a centimetre field, 250 is 2.5 m; in a metre field, 250 is 250 m.
What does not change
- Stored values. Switching from metres to centimetres re-renders the fields and moves nothing. A box at 1.5 m reads
150in cm and is still at 1.5 m. - The feel of a drag. Scrubbing a field covers the same real distance in every unit — only the number under your cursor is written differently.
- What your peers see. Units are never replicated and never saved into a scene, so opening someone's file does not change your setup, and yours does not change theirs.
Precision
The number of decimals follows the unit, so the field keeps roughly the precision it had. A position showing 1.50 m shows 150 in centimetres — the same centimetre of control, just written without a fractional part. Inches and feet keep a decimal place for the same reason: a whole inch is a coarser step than a centimetre, so the field does not round that far.
The arrow keys always step the last visible digit, with Ctrl for ten times that and Shift for a hundred — see Numeric fields.