How do I switch from imperial to metric units?

1. Select More from the menu bar then select Settings
   
   
   
   
   
   
2. Toggle on Use metric units to use metric units; toggle it off to use imperial units
   
   
   
   
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   If you change to metric units, plant spacings remain the same. Planter shows how many plants can be planted per square foot (roughly 30cm x 30cm).