Convert circular mil to varas castellanas cuad Online | Free area Converter

Circular Mil


A circular mil is a unit of area used mainly to measure the cross-sectional area of round wires and cables in electrical engineering.



  • Defined as the area of a circle with a diameter of 1 mil (1 mil = 0.001 inch).



  • Area = (diameter in mils)² circular mils.



  • 1 circular mil ≈ 7.854 × 10⁻¹⁰ square meters or 0.7854 square mils.



Circular mils simplify calculations for round wires since area scales with the square of the diameter.



Varas Castellanas Cuadradas


Varas castellanas is an old Spanish unit of length, and varas castellanas cuadradas refers to the corresponding unit of area (square varas castellanas).



  • 1 vara castellana ≈ 0.8359 meters



  • 1 square vara castellana = (0.8359 m)² ≈ 0.6988 m²



This unit was historically used in Spain and Spanish colonies for measuring land and building areas. It is mostly obsolete today but can still appear in old land records.




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