Katha to Square Feet Converter
Convert regional katha measurements into square feet, square meters, square yards, and acres using the correct local definition.
Land area inputs
A katha is not standardized, so the region determines the conversion factor.
Required. Enter a nonnegative decimal using a period, for example 5 or 2.75.
Converted area
5 katha in Bangladesh equals 3,600 square feet.
Excel workbook ready.
Regional conversion reference
| Region | 1 katha in ft² | 1 katha in m² | 10,000 ft² in katha |
|---|
Regional usage can vary locally. For a legal survey, deed, tax filing, or transaction, confirm the customary unit with the responsible land authority or survey professional.
How to use this katha to square feet calculator
What this calculator does
This calculator converts an area stated in katha into square feet and three additional standard area units. The important detail is that katha is a customary regional unit rather than one globally fixed quantity. The selected Region therefore changes the number of square feet represented by one katha. The result is an exact arithmetic conversion for the chosen factor, but it is not a legal determination of a parcel boundary or the locally accepted definition in a particular deed.
When to use it
Use it when comparing a land listing stated in katha with a floor plan stated in square feet, estimating the metric area of a plot, checking whether two advertisements describe similar parcel sizes, or preparing a clear unit conversion for a spreadsheet. It is especially useful when documents from Bangladesh, Nepal, or eastern India use different customary factors.
How to calculate
- Start with the ready-to-use demonstration: Bangladesh and 5 katha. The results and a validated example XLSX workbook are available immediately.
- Choose the applicable Region. Do this before interpreting the result because the regional factor can change substantially.
- Replace Area in katha with the required nonnegative decimal. Use a period as the decimal mark; grouped numbers, commas, scientific notation, units, and negative values are rejected to prevent ambiguous input.
- Read Area in square feet as the primary result, then use the square-meter, square-yard, acre, and regional-factor cards for comparison.
- Select Download Excel to create a current-state OOXML workbook. Select Reset to clear the demonstration and calculated data; export remains unavailable until a complete valid area is entered again.
Input guide
Region is a required selection. It determines the local square-feet-per-katha factor. Bangladesh, for example, uses 720 ft² per katha in this calculator, while Nepal uses 3,645 ft². A common mistake is assuming that a katha from one jurisdiction is interchangeable with a katha from another. Area in katha is a required plain decimal from 0 through 1,000,000. A realistic entry is 5. Increasing it increases every converted result proportionally. Zero is valid and represents no area; a blank, negative, comma-formatted, or nonnumeric value is invalid.
Output guide
Area in square feet is the chosen katha amount multiplied by the regional factor. Area in square meters converts the same area using the international definition that one foot equals exactly 0.3048 meter, so one square foot equals 0.09290304 square meter. The BIPM SI Brochure explains the International System of Units and exact unit definitions. Area in square yards divides square feet by nine. Area in acres divides square feet by 43,560. Regional factor shows the selected conversion constant and is the key assumption behind all results. The reference table lists the same factors and the reciprocal conversion for 10,000 square feet.
Worked example
The opening example selects Bangladesh and enters 5 katha. The calculation is 5 × 720 = 3,600 square feet. Converting that result gives 3,600 × 0.09290304 = 334.4519 square meters, 3,600 ÷ 9 = 400 square yards, and 3,600 ÷ 43,560 = 0.082645 acre. These values match the first rendered result cards and the startup Excel workbook.
Formula and interpretation
All other outputs are derived from the square-foot result. Because the model is linear, doubling the katha amount doubles every output. The main source of uncertainty is not the arithmetic but the regional meaning of katha. The NIST guidance on SI area units provides context for expressing area in square meters, while official land records or a licensed surveyor should be used when a customary unit affects ownership, taxation, or a contract.
Common mistakes and practical checks
- Do not copy a factor from a different state, district, or country.
- Do not confuse square feet with linear feet; area units are squared dimensions.
- Keep enough decimal places for intermediate work, especially when converting to acres.
- For transactions, compare the calculator result with the measurement language in the deed or survey rather than relying only on an advertisement.