How to change the measurement units in Blender

In this article we are going to look at the topic of measurement units, for example how to change from meters to millimeters or how to change the measurement system to imperial in Blender.

How to CHANGE UNITS in BLENDER
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We start with any 3D model in which the lengths of the edges have been displayed as shown in Figure 1, we see that the edges of the plane measure 2 meters each and if we go to the Transform window of the object we see that it is positioned at the origin and that distance is also expressed in meters.

3d model of a plane showing the length of each edge in meters in blender
Fig. 1: Plan in which the lengths of each edge are shown.
window of transformation of an object in blender where you can see the lengths expressed in meters
Fig. 2: In the object transformation window the lengths are expressed in meters.

The unit system window in Blender is located in the properties tab of the scene, we can access it using the icon shown in figure 3.

Scene properties tab in Blender where you can change the measurement system.
Fig. 3: Scene properties tab in Blender where you can change the measurement system.

There we go to the “Units” section and there we have the options to change the unit system, we are going to change the “Length” property from meters to millimeters, as shown in figure 5.

units section in Blender that allows you to choose between the metric and imperial system and units.
Fig. 4: In the units section you can select which units to display and apply a scaling.
sección unidades en Blender que permite elegir entre el sistema métrico y el imperial y las unidades
Fig. 5: Once the measurement system has been selected, the units for a given quantity can be changed.

Now the lengths of the edges and the lengths appearing in the windows are expressed in millimeters, as shown in Figure 6.

blender change of length units to millimeters
Fig. 6: By changing the length units to millimeters, dimensions and lengths are now expressed in millimeters.

Using the imperial measurement system in Blender

If instead of meters we want to use feet or inches we must change the unit system from “Metric” to “Imperial”, as shown in figure 7.

units section in Blender that allows you to choose between the metric and imperial system and units.
Fig. 7: The imperial measurement system can be selected to express lengths in feet and inches for example.
3d model of a plane showing length of each edge in feet in blender
Fig. 8: The dimensions in the plane are expressed in feet.

Now in the parameter “Length” we find the units feet and inches.

units section in Blender that allows you to choose between the metric and imperial system and units.
Fig. 9: The units are changed to inches.

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