Convert square mil [mil^2] to acre [ac] Online | Free area Converter

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.


Acre [ac]


An acre (ac) is a unit of area commonly used in the United States and other countries for measuring land. One acre equals 43,560 square feet or about 4,047 square meters.

1 acre ≈ 0.4047 hectares or 0.004047 square kilometers.

Acres are often used to describe the size of farms, plots, and real estate.



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