Convert square pole to barn [b] Online | Free area Converter

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Square Pole


A square pole is another name for a square rod or square perch, a traditional unit of area used in land measurement.



  • 1 pole (rod) = 16.5 feet



  • 1 square pole = 16.5 ft × 16.5 ft = 272.25 square feet ≈ 25.29 square meters



  • 160 square poles = 1 acre



Square poles have historically been used in surveying and describing land parcels.



Barn [b]


A barn (b) is a very small unit of area used mainly in nuclear and particle physics to measure the cross-sectional area of atomic nuclei and particles.

1 barn = 10⁻²⁸ square meters (m²).

The name "barn" humorously refers to something “as big as a barn” in the tiny world of atomic scales, despite its extremely small size.



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