The Sims squares to Square Meters or Feet conversion
Based on furniture size, one square (unit) in all The Sims games seems to be 3 feet (0.91 meters), or 9 square foot. But this is not important, you can consider each game square to be 1 square meter (= 10.7 square foot). However, if you want to replicate real houses, you should NOT pay attention to matching size of real house, instead you should adjust the house size to make it suitable for your Sims family size.
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