Skip to content
Katha to Square Feet Converter
Conversion Results
Precision Katha to Square Feet Converter: Regional Land Measurement Authority
| Primary Goal | Input Metrics | Output | Why Use This? |
| Traditional Land Translation | Katha (Regional), Area ($ft^2$) | Square Feet ($sq ft$) | Essential for real estate valuation, legal property documentation, and architectural planning in South Asia. |
Understanding Katha Measurements
The Katha (or Kattha) is a traditional unit of area used across Bangladesh, Nepal, and Eastern India. While modern surveying increasingly relies on metric units, local land registries and market valuations still predominantly operate in Katha.
The critical challenge with Katha is its regional elasticity. Unlike an Acre or a Hectare, which are globally standardized, the size of a Katha is determined by local custom and historical administrative boundaries. For instance, a single Katha in Nepal is over five times larger than a Katha in West Bengal. Accurately converting these units is vital to prevent significant financial discrepancies during property transactions.
Who is this for?
- Real Estate Investors: For comparing land prices across different Indian states or international borders.
- Civil Engineers & Architects: For translating traditional plot sizes into precise square footage for construction blueprints.
- Legal Professionals: For ensuring property deeds accurately reflect modern measurement standards.
- Non-Resident Indians (NRIs) & Expatriates: For managing ancestral property valuations from abroad.
The Logic Vault
Because the Katha is a non-standardized unit, the conversion formula requires a regional coefficient ($C_r$).
$$A_{sqft} = A_{katha} \times C_r$$
Variable Breakdown
| Name | Symbol | Unit | Description |
| Square Feet | $A_{sqft}$ | $ft^2$ | The resulting area in square feet. |
| Katha | $A_{katha}$ | $katha$ | The land area in traditional Katha units. |
| Regional Constant | $C_r$ | $ft^2/katha$ | The specific conversion factor for your location. |
Common Regional Constants ($C_r$)
| Location | Cr (Sq. Ft per Katha) |
| Bangladesh / West Bengal | $720$ |
| Nepal | $3,645$ |
| Assam | $2,880$ |
| Patna / South Bihar | $1,361$ |
Step-by-Step Interactive Example
Scenario: You are looking to purchase a plot in Assam that is listed as 5 Katha. You need to calculate the total square footage to determine how many standardized $1,200 sq ft$ homes can be built.
- Identify Input: $A_{katha} = \mathbf{5}$.
- Select Regional Constant: For Assam, $C_r = \mathbf{2,880}$.
- Apply Formula:$$5 \times 2,880 = 14,400$$
- Final Result: The total area is 14,400 sq ft.
Information Gain: The “Standard Bigha” Relationship
A “Hidden Variable” often overlooked is the relationship between the Katha and the Bigha. In most systems, $20\ Katha$ equals $1\ Bigha$. However, because the Bigha also varies by region, many users make the error of assuming a “Standard Bigha” of $14,400\ sq\ ft$ (common in West Bengal) applies everywhere. In parts of Bihar, a Bigha can be as large as $27,225\ sq\ ft$. Always verify the $Bigha$ definition in your specific sub-district before back-calculating your $Katha$ values.
Strategic Insight by Shahzad Raja
Having analyzed South Asian real estate tech for 14 years, I’ve found that “Village Records” often use local “Laggas” (measuring sticks) to define a Katha. The length of the Lagga can vary from $4$ to $12$ cubits. If you are involved in a high-value transaction, don’t just rely on a state-wide average. Request the “Lagga length” used in the original survey; a difference of just $6\ inches$ on the stick can change your final square footage by hundreds of feet.
Frequently Asked Questions
How many square feet are in 1 Katha in Bangladesh?
In Bangladesh, $1\ Katha$ is strictly standardized at 720 square feet.
How do I convert Katha to Square Meters?
First, convert Katha to square feet, then multiply by 0.0929. For example, in West Bengal:
$$720 \times 0.0929 \approx 66.89\ m^2$$
Why is Nepal’s Katha so much larger?
Nepal uses a different measurement hierarchy where the Katha is a sub-unit of the Ropani or Bigha system specific to the Terai region, resulting in a much larger area of 3,645 sq ft.
Related Tools
- Gaj to Square Yard Converter: For northern Indian urban property measurements.
- Acres to Hectares Converter: For large-scale agricultural land assessment.
- Ground to Square Feet Calculator: Specific to South Indian (Chennai/Tamil Nadu) real estate.
