Free Land Area Converter
Convert land measurements across 249 countries and territories using standard units and documented local conventions—without assuming a katha, bigha or marla means the same everywhere.
Convert land area
Select a land-unit standard, enter the area and see equivalent measurements instantly.
Save this tool to Favorites
Sign in to save this page in your CorrectionCopy account. Measurements and land figures are not saved.
Worldwide standards are available in every country.
Local units appear only when a defined convention is available.
Enter 12.5 or 12,5. For thousands, use 1,234 or 1234.
Mixed regional land measurements
Rectangular plot calculator
Multiply the length by the width for an approximate rectangular area. For irregular parcels, rely on a professional survey.
Conversions happen in your browser. Regional figures are arithmetic equivalents—not certified survey measurements.
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How to use the land area converter
- Choose Worldwide or a country/territory, then select its land-measurement convention. Every country has international area units; documented regional units appear where supported.
- Enter the land area and choose From and To units. The result updates immediately.
- Use the two-arrow Swap button to reverse the units, or adjust decimal precision for display.
- To combine regional units from a land record, open Mixed regional land measurements. To estimate rectangular parcel area, open Rectangular plot calculator.
- Copy the result, Save PNG, Save CSV, or Print. Verify the chosen regional convention against your survey or property documentation.
International and regional land measurement units
Convert square metres (m²), square feet (ft²), square yards (yd²), hectares, acres, square kilometres, square miles, square perches, roods and cents/decimals. For property and agricultural records, regional presets supply context for customary land units that differ by location.
The country picker covers the 249 ISO 3166-1 country and territory entries. Documented presets include Bangladesh katha and bigha, India regional bigha and guntha, Pakistan marla variants, Nepal hill and Terai systems, Thai rai, Japanese tsubo, Korean pyeong, Chinese mu, Taiwanese ping, Brazilian alqueire variants, Egyptian feddan, Indonesian ubin, Greek stremma, Russian sotka, and Nigerian example plot dimensions. Countries without a verified local preset use standard area units—not an invented local conversion. Historical, regional and customary values must be checked against the actual deed.
Extras include mixed-unit inputs, a rectangular land-plot calculator, adjustable decimal precision, copyable results, CSV downloads, PNG image exports and print-ready summaries. The conversions run locally in the browser without uploading land measurements to a processing endpoint.
Practical conversion examples
| Measurement | Selected standard | Equivalent |
|---|---|---|
| 1 acre | International | 43,560 square feet = 4,046.8564224 m² |
| 1 katha | Bangladesh Ministry / Dhaka convention | 720 square feet |
| 1 marla | Pakistan, traditional | 272.25 square feet |
| 1 marla | Pakistan, housing-scheme standard | 225 square feet |
| 1 ropani | Nepal hills | 5,476 square feet |
| 1 kattha | Nepal Terai | 3,645 square feet |
| 1 rai | Thailand | 1,600 square metres |
| 1 mu | Modern China | 1/15 hectare |
Definitions, sources and local assumptions
International area units use fixed metric definitions and the international yard; for example an international foot is exactly 0.3048 metre and an international acre is exactly 43,560 square feet. NIST standard conversion factors provide a reliable reference. The discontinued US survey foot is not silently substituted for the international foot.
Local land measures are inherently contextual. Bangladesh Ministry of Land publishes commonly used katha and bigha figures. Nepal Department of Land Management and Archive publishes traditional land-measure relationships, including Terai bigha/kattha/dhur and hill ropani/aana. The Thai land-unit explainer describes rai, ngan and square wah conventions. The Pakistan marla comparison distinguishes 225 and 272.25 square-foot marla values.
Additional regional references include Indian state-level bigha/katha differences, Japanese tsubo and real-estate tatami conventions, and modern Chinese mu. These are reference conventions, not a substitute for your state revenue rules or deed. Further documented references include Brazilian IPEA non-decimal agrarian measures, Egyptian government/FAO feddan definition, Taiwan official land registry area conversion, and World Bank Nigeria residential plot-size assessment. Country names follow the ISO 3166-1 list. Where no fixed customary value is verifiable, the tool retains standard square metres/hectares/acres only. When there is disagreement, verify the number written in your specific survey or registry document.
Precision, privacy and limitations
The numerical engine uses exact rational multiplication and division on entered decimal values to reduce binary floating-point drift. Visible answers are rounded to your chosen decimal places; stored result calculations remain unrounded until formatting. Very small results can display as zero at low precision—raise precision when needed.
The rectangular plot helper assumes a rectangle and multiplies length by width. Real plots may have irregular boundaries or survey discrepancies. Only use a land-purchase, tax, building or legal figure after reconciling the local measurement standard with the relevant authority's records. The calculator does not establish boundaries, title or legal ownership. Form measurements are calculated locally; page requests, normal hosting logs and shared site services follow their own existing policies.
Troubleshooting measurement conversions
- My bigha or marla answer is unexpected: check the selected regional preset—identically named units can have different square-foot definitions.
- Result appears as zero: increase the decimal-place setting, or convert to a smaller output unit.
- Conversion cannot be entered: use a decimal number such as 12.5 or 12,5, not a currency symbol or a fraction such as 1/2.
- Downloaded PNG looks different from the screen: the PNG is a clean, white, readable result card, not a full-page screenshot. It records the selected regional standard and your current land-area values.
- Results disagree with a legal deed: do not force a conversion; seek the locally applicable definition or a qualified surveyor.
Frequently asked questions
How many square feet are in one katha?
Under the Bangladesh Ministry of Land / Dhaka convention used here, 1 katha = 720 sq ft. In other parts of South Asia, katha can be different, so select the correct regional standard and verify your local record.
Is one bigha the same in Bangladesh, India and Nepal?
No. This converter distinguishes Bangladesh and selected Indian local conventions from Nepal Terai, where a bigha is 72,900 sq ft. A deed or survey record remains authoritative.
What is the difference between a marla of 225 and 272.25 square feet?
These standards occur in Pakistani property practice. This page provides distinct 225, 272 and 272.25 ft² presets to avoid a silent assumption; check your housing society or local authority before pricing or buying land.
Can I convert rai, ropani, pyeong and tsubo?
Yes. Choose the relevant regional preset, select its customary source unit, and convert to another land unit or to common units such as square metres, square feet, acres and hectares.
Can I download or print the result?
Yes. Use Save PNG for a readable conversion image, Save CSV for a spreadsheet-ready result, or Print to produce a paper or PDF record. Check the selected local standard before sharing any figures.
Are conversions exact?
Many standardized factors are exact (for example, 1 international foot = 0.3048 metre). The calculator uses rational decimal arithmetic to avoid avoidable floating-point errors. Results may be rounded for display, and regional definitions are valid only for the selected convention.
Can the calculated number be used as a legal land survey?
No. This converts figures using published or customary unit definitions; it does not determine actual boundaries or resolve discrepancies in deeds. For transactions and registration, use the relevant authority and a qualified surveyor.
Why are standard units shown for some countries but not local land units?
The country selector supports 249 ISO-listed countries and territories. A regional unit appears only when a specific documented convention can be identified; it would be misleading to invent one merely to fill every country. Square metres, hectares, acres and other standard units always remain available.
Can I choose different Brazilian alqueires or Nigerian plot sizes?
Yes. Brazilian alqueire units have distinct regional definitions. Nigerian plot presets are explicit example dimensions, not a nationwide standard. Always compare the chosen figure with survey records.
Are my entered measurements uploaded?
Conversion calculations run in the browser and this tool does not post measured values to a processing service. The separate Save Tool action stores only the page in your existing account Favorites, not your measurements.