Convert Square Millimeter to Katha (BD) (mm² to Katha (BD))

Square Millimeter (mm²) and Katha (BD) (Katha (BD)) are both units of area. With the conversion form below, you can effortlessly and accurately convert square millimeter to katha (bd). This free online calculator tool makes it simple and easy to perform the conversion from mm² unit to the Katha (BD) unit.

Area is the measurement of the two-dimensional space enclosed within a shape or surface. It represents how much surface a flat object occupies and is expressed in square units such as square meters (m²), square feet (ft²), acres, and hectares. Area measurement is fundamental in mathematics, engineering, architecture, construction, agriculture, real estate, land surveying, and environmental planning.

Different countries and industries use different area units depending on local standards, regulations, and practical requirements. The square meter (m²) is the internationally accepted SI-derived unit of area, while square feet (ft²) are widely used for residential and commercial properties in the United States and several other countries. Larger land areas are commonly measured in hectares, acres, or traditional regional units.

Understanding area units helps you compare property sizes, estimate construction materials, calculate flooring, roofing, painting, and landscaping requirements, and interpret maps, land records, and engineering drawings. If you want to learn more about area measurement, unit definitions, conversion methods, formulas, and practical applications, read our complete guide to Area.

Square millimeter (symbol: mm², sq mm, or mm²) is an SI-derived unit of area equal to the area of a square with sides measuring one millimeter each. One square millimeter is exactly equal to 0.000001 square meters, 0.01 square centimeters, or approximately 0.0015500031 square inches. It is commonly used to measure very small surface areas with high precision.

Square millimeter is widely used in mechanical engineering, electronics, manufacturing, materials science, and technical drawing. It is commonly used for specifying wire cross-sectional areas, electronic components, machined parts, and precision engineering measurements. This converter follows the internationally accepted relationship of 1 square millimeter = 0.000001 square meters = 0.01 square centimeters, ensuring accurate and reliable conversion between square millimeters and other area units.

Katha (Bangladesh) is a traditional unit of land measurement widely used throughout Bangladesh for residential plots, agricultural land, and property transactions. In the commonly used Bangladeshi system, 1 Katha equals 720 square feet, which is equivalent to approximately 66.89 square meters, 1.65 Satak (Decimal), or 1/20 of a Bigha. Katha remains one of the most familiar land measurement units in Bangladesh and is commonly used in real-estate advertisements, land registration records, housing developments, and property valuation. Although modern surveying systems increasingly use square meters and hectares, many landowners, buyers, and developers continue to describe plot sizes in katha because of its long-standing role in local land transactions.