To convert 0.5 inches to mils, multiply by 1000 to get 500 mils. Explanation: To convert 0.5 inches to mils, we need to know the conversion factor between inches and mils. A mil is equal to one thouh of an inch, so we can multiply 0.5 inches by 1000 to get the equivalent measurement in mils. Therefore, 0.5 inches is equal to 500 mils.