Land Measurement Converter
🌎 Metric & imperial
🇹🇭 Thailand
🇨🇳 China
🇯🇵 Japan
🇰🇷 South Korea
🇮🇳 India
🌍 Middle East & Africa
⭐ Special
Every unit converts through square meters: 1 rai = 1,600 m², 1 acre ≈ 4,046.86 m², 1 hectare = 10,000 m², 1 mu ≈ 666.67 m². Type in any box to see every other unit update. Related: square footage, area calculator, acreage.
What Your Result Means
- Square meters (m²): The universal base unit. All conversions route through square meters to ensure consistency across regional units.
- Regional units: Thai Rai (1,600 m²), Chinese Mu (666.67 m²), Japanese Tsubo (3.306 m²), Korean Pyeong (3.306 m²), and Indian Bigha (2,529 m², Rajasthan standard) all represent locally standardized land areas.
- Fun comparisons: The basketball court, football field, soccer pitch, and Minecraft block conversions help visualize land areas in terms you can picture.
- Regional variation warning: Indian units like Bigha and Biswa vary significantly by state. This converter uses Rajasthan values for Bigha/Biswa and Punjab values for Kanal/Marla. Always verify local standards before any transaction.
How This Calculator Works
You type a number into any unit field and every other field updates instantly. The tool stores each unit's factor in square meters (e.g., 1 acre = 4,046.86 m², 1 rai = 1,600 m²). When you enter a value, it multiplies by the source unit's factor to get square meters, then divides by every other unit's factor. This single-base approach prevents compounding rounding errors across 25+ unit pairs.
Quick Questions
How many rai in one acre?
About 2.53 rai per acre. One acre is 4,046.86 m² and one rai is 1,600 m², so 4,046.86 ÷ 1,600 ≈ 2.53. Type 1 in the acres field to see the exact conversion to rai and every other unit.
Why does the Bigha value look different from my local records?
The Bigha varies widely across India — from about 1,500 m² in some states to over 6,700 m² in others. This converter uses the Rajasthan standard of approximately 2,529 m² per Bigha. Check your state's revenue department for the local definition.
What is a Talang Wah?
A Talang Wah (ตารางวา) is 4 square meters and is the smallest unit in the Thai land measurement system. There are 100 Talang Wah in one Ngan and 400 in one Rai. It's the standard unit on Thai land title deeds.
Are Tsubo and Pyeong the same size?
Yes — both are approximately 3.306 m² (about 35.58 sq ft). The Japanese Tsubo and Korean Pyeong derive from the same historical unit. South Korea officially switched to metric in 2007 but Pyeong remains common in real estate.
How accurate are the fun comparisons?
The sports field sizes use official dimensions: NBA court (94 × 50 ft = 436.6 m²), NFL field with end zones (360 × 160 ft = 5,351 m²), FIFA pitch (105 × 68 m = 7,140 m²), and Minecraft blocks (1 × 1 m = 1 m²). These are fixed standard sizes.
Sources
- NIST — International System of Units (SI) (square meter definition)
- Thailand Department of Lands (Rai, Ngan, Talang Wah official definitions)
- Government of India — Ministry of Housing and Urban Affairs (Bigha, Kanal regional standards)
Method & review
Estimate only. Indian land units (bigha, biswa, kanal, marla, guntha) vary significantly by state — this calculator uses Rajasthan values for bigha/biswa and Punjab values for kanal/marla. Verify local standards before transacting.