Katha to Square Feet Converter

Katha is a traditional land-area unit used in Bangladesh, India, and parts of Nepal. Unlike an internationally standardized unit, its size varies significantly by country, state, district, and historical land system. Square foot, by contrast, has a fixed definition and is widely used in property plans, construction documents, valuations, and listings. A reliable conversion therefore requires both the number of Katha and the regional square-feet-per-Katha factor. This calculator starts with 720 square feet per Katha, a convention commonly used in Bangladesh. It intentionally keeps the factor editable because applying 720 everywhere would be misleading. In parts of West Bengal, for example, a Katha is commonly treated as approximately 720 square feet, while conventions around Bihar and Assam may use values near 1,361 square feet or other local definitions. Even within a broad region, official records or customary practice may differ. The calculation multiplies the Katha value by the selected conversion factor. Five Katha at 720 square feet per Katha equals 3,600 square feet. If a local record defines one Katha as 1,361.25 square feet, then 2.5 Katha equals 3,403.125 square feet. The editable factor makes the arithmetic transparent and allows the result to match the source document rather than assuming a universal standard. Before using the result for a purchase, sale, tax filing, boundary decision, loan, or construction plan, confirm the applicable factor with a deed, cadastral record, licensed surveyor, land office, or other authoritative local source. A colloquial estimate may be useful for discussion but may not match the legal area. Also check whether a document uses Katha alongside related units such as Bigha, Decimal, Satak, or Dhur, since those relationships can vary under the same regional system. Enter decimal Katha values when the property includes a partial unit. Keep enough decimal places to reflect the accuracy of the recorded area and factor, and round only after multiplication. This converter performs a deterministic area calculation; it does not resolve boundary discrepancies, certify title records, or replace a survey. Its main value is making the chosen regional assumption explicit so that property professionals and owners can reproduce and verify the conversion.