How can I switch between Metric and Imperial Units?

Impact supports multiple unit types and lets you switch between Metric and Imperial units at any time.

Supported units include:

• Millimetres
• Centimetres
• Metres
• Inches
• Feet
• Points

To change the units:

1. Open Options.
2. Go to Environment > Environment.
3. Select Measurements and Units….
4. Choose the required unit type.

From the same dialog, you can also change the weight format used by Standards and Case Compression.

When you change units, all existing geometry is automatically converted to the new unit system.

Quick unit swap (when rulers are displayed):

• Double click the unit tile between the horizontal and vertical rulers to cycle between available units.

Tip: If you regularly work with more than one unit system, consider creating separate Appearance settings for each unit type.

Further Reading

• Measurements and Units
• Appearance Settings