Square Mil [mil²]
A square mil (mil²) is a very small unit of area used mainly in engineering and manufacturing, especially for measuring the cross-sectional area of wires and thin materials.
1 mil = 1/1000 of an inch (0.001 inch)
1 square mil = (0.001 inch)² = 0.000001 square inches (in²)
1 square mil ≈ 6.4516 × 10⁻¹⁰ square meters (m²)
Square mils are useful for precise measurements in electronics and materials science.
Square Mile [mi²]
A square mile (mi²) is a unit of area used primarily in the United States and the UK to measure large land areas. It represents a square that is one mile long on each side.
1 square mile = 2.59 square kilometers = 640 acres.
Square miles are commonly used to describe the size of cities, counties, and large geographic regions.