Katha to Square Feet Converter - Region-Factor Area Math

A katha to square feet converter is a regional area tool for Indian, Bangladeshi, and Nepali land records that turns a katha figure into the same area in square feet, square meters, square yards, decimal, and acres.

• • Property listing audits: Audit a property listing that quotes area in katha and add the matching square foot and square meter values for non-Indian buyers or for cross-checking with municipal records.
• • Rent and lease paperwork: Translate a katha figure on a rental contract into square feet or square meters so the area can be entered into accounting or facility software.
• • School and exam work: Practice the regional katha factors and check the related square foot, square meter, and decimal values for math problems on Indian land measurement.
• • Cross-state land comparison: Match a katha figure from a Bihar record against a West Bengal, Assam, Bangladesh, or Nepal record by switching the region selector.

Katha is a traditional land-area unit that became officially obsolete after metrication but is still common in property listings, revenue records, and lease notes because it is the unit a clerk or buyer already knows.

When the source value needs to move from katha into several square-foot options such as square meters and acres, the Square Feet Converter Calculator gives a broader square-foot-first workflow.

The calculation uses a fixed regional factor. One katha equals a region-specific number of square feet, and every other output is derived from that one square-feet value.

• katha: The traditional area value entered by the user, the same number as the katha figure on a Bihar, West Bengal, Assam, Bangladesh, or Nepal record.
• kathaFactor (region): The square-feet-per-katha factor for the selected region. South Bihar / Patna / Gorakhpur / Purvanchal share 1,361.25; West Bengal, Bangladesh, and Ranchi use 720; Assam uses 2,880; Nepal uses 3,645.
• 0.09290304: Square meters in one square foot, derived from the international foot of 0.3048 meter (foot × foot).
• 9: Square feet in one square yard, because 1 yard = 3 feet, so 1 square yard = 3 × 3 = 9 square feet.
• 435.6: Square feet in one decimal for Bihar and Eastern India, so the decimal side field reads in the unit a local land record uses.

Each supporting output uses a single, well-known constant. The square meter value uses 0.09290304, the square yard value uses 9, the decimal value uses 435.6 square feet per decimal for Bihar, and the acre value uses 43,560 square feet per acre.

According to sizes.com — Katha, drawing on H. H. Wilson's 1855 glossary, 1 katha in India and Bengal was 80 square yards, or 720 square feet, and the United Nations 1966 survey of customary Nepalese units records 1 katha as 338.57 square meters, consistent with 3,645 square feet.

According to The Indian Express, the Bihar Revenue and Land Reforms Department distributes three-decimal land plots of about 1,306 square feet to landless families, which places 1 decimal at roughly 435 square feet in Bihar and Eastern India and anchors the regional katha-to-square-feet step to a real revenue-record figure.

For sibling Indian area work where the source value is in gaj rather than katha, the Gaj to Square Yard Converter covers the same British, metric, and Indian side units in one form.

These concepts explain why the katha value changes between regions and what the supporting units mean on a property record.

For mental math, 1 katha is 1,361.25 square feet in South Bihar, so a 10 katha plot is 13,612.5 square feet or 31.25 decimal. Multiplying by 1,300 is a rough classroom estimate, not the exact 1,361.25 factor.

If a record quotes area in katha but does not name the region, do not guess the katha-to-square-feet factor. The katha label was never standardized across India, Bangladesh, or Nepal, so the same value can mean 720, 1,361.25, 2,880, or 3,645 square feet depending on the region. Confirm the region with the listing agent, the revenue office, or the seller before copying the result into any record.

After the katha-to-square-feet step, the Area Converter can carry the same area into other customary and metric units such as hectares and acres.

Use the form when you have a katha value from a listing, contract, or note and need the same area in square feet, square meters, square yards, decimal, and acres.

1. 1 Pick the region first: Open the region selector and pick the state, district, or country that matches the katha figure in the source record. The region choice controls the katha-to-square-feet factor.
2. 2 Enter the katha value: Type the plot or area size as a non-negative number. Decimals are fine for partial plots, such as 2.5 katha.
3. 3 Read the square foot result: Use the square foot line as the primary answer when a buyer, bank, or record needs the figure in the British land unit.
4. 4 Check the square meter side field: Confirm the metric value next to the katha input when the rest of the project uses meters, such as a builder drawing.
5. 5 Use decimal for Bihar and Eastern India records: Copy the decimal value into a Bihar, Jharkhand, or Eastern UP record when the surrounding paperwork is in decimal rather than katha.
6. 6 Convert to acres for village-scale plots: Use the acre line for village-scale land so the result reads in a unit a rural revenue record can match.

If a Bihar property listing quotes 8 katha, the katha to square feet converter returns 10,890 square feet, 1,011.72 square meters, 1,210 square yards, 25 decimal, and 0.25 acre at the South Bihar default. Switching to West Bengal or Bangladesh gives 5,760 square feet instead, which is how the same katha label can mean very different real areas.

When the katha-to-square-feet result still has to be matched against an acre-based record, the Acres to Square Feet Converter keeps the acre side of the comparison in one place.

A focused katha to square feet calculator prevents small region mistakes from spreading through a property record, lease note, or estimate.

• • Pairs katha with every common Indian area unit: Square feet, square meters, square yards, decimal, and acres come from the same katha entry, which avoids a chain of separate converters.
• • Covers the regional katha factors: South Bihar, Patna, Gorakhpur, Saran, Hajipur, Bettiah, West Bengal, Bangladesh, Ranchi, Assam, and Nepal are on one selector.
• • Keeps the Bihar decimal visible: Decimal is included as a side field, so a Bihar or Eastern UP record in decimal can be cross-checked against the same area in katha.
• • Audits rent and lease paperwork: Square feet and square meters are side fields, so a lease note in katha can be cross-checked against a facility database that stores square feet.

Use the katha to square feet converter as a record of the conversion method when someone else needs to review the source katha value, the region selector, and the rounded result.

For South Indian records where the same area is quoted in cent rather than katha, the Cent to Square Meter Converter covers the cent-to-square-meter step in the same Indian area workflow.

The katha-to-square-feet step depends on the region selector, so the result changes with the region choice, the original measurement, and the supporting constants.

• • The calculator converts area only. It does not convert length, cubic katha, or building material volume, so do not use it for 1 katha of fabric or 1 katha of concrete.
• • Some Bihar districts (Bettiah, Hajipur, Saran) use katha factors that differ from the South Bihar default. For those districts, the region selector must be changed before the result is copied into a record.
• • For legal boundary work, the source katha figure should be rechecked against the official revenue or municipal record.

For most ordinary property and classroom uses, the 1,361.25 ft² per South Bihar katha factor is the right assumption.

According to NIST Handbook 44 Appendix C, the international foot is exactly 0.3048 meter, so 1 square foot is exactly 0.09290304 square meter.