WWorkmate

Pyeong / m² / ja² Converter

Convert real-estate area units instantly. National housing standard 84㎡ to pyeong + ja unit support. Auto 0.5-pyeong rounding for ads.

Conversion

Pyeong
25.41

0.5 pyeong rounded (real-estate): 25.5 pyeong

Square meters
84.00 ㎡
Square ja
914.76
  • • 1 pyeong = 6 ja × 6 ja = 36 ja² = 3600/1089 ≈ 3.30578 m²
  • • Real-estate ads round to 0.5 pyeong. Official deeds use ㎡ (mandatory since 2007).
  • • Exclusive area = contract area minus shared spaces (corridors, lobbies, etc.).

What this tool does

The Korean area converter handles the three units most used in Korean real estate, interior, and construction work: pyeong (평), square meters (㎡), and Japanese-style ja² (尺²). Using the exact ratio 1 pyeong = 3,600/1,089 ≈ 3.30579 ㎡, it converts all three units instantly and offers presets for common Korean real estate sizes (59㎡, 84㎡, 114㎡) and pyeong values (30평, 50평).

Who uses this

  • Comparing Korean apartments: how many pyeong is an 84㎡ unit (= 25.41 pyeong)
  • Interior estimates: convert pyeong-based prices to per-㎡ unit prices
  • Architectural drawings: convert Japanese/old-Korean ja² units
  • Lease contracts: convert the ㎡ in official registration to pyeong
  • Vacancy allocation: convert pyeong-based rent to ㎡-based ratio

How to use

  1. 1Enter the area into any one of the three unit boxes (pyeong, ㎡, ja²). The other two units update automatically.
  2. 2Preset buttons (59㎡, 84㎡, 114㎡, 30평, 50평) apply common Korean real estate sizes with one click.
  3. 3Results show pyeong to two decimals, ㎡ and ja² to two decimals, plus a '0.5-pyeong rounded' value matching real estate listing conventions.

Conversion formulas (Korean standard)

1 pyeong = 6 ja × 6 ja = 36 ja² = 3,600/1,089 ㎡ ≈ 3.30579 ㎡ 1 ja = 10/33 m ≈ 0.30303 m pyeong → ㎡ : pyeong × 3.30579 ㎡ → pyeong : ㎡ / 3.30579 ≈ ㎡ × 0.3025 pyeong → ja² : pyeong × 36 ja² → ㎡ : ja² × (10/33)² ≈ ja² × 0.0918 Korean real estate sizes: 59㎡ ≈ 17.84 pyeong (the '18-pyeong' type, exclusive area) 84㎡ ≈ 25.41 pyeong (the '25-pyeong' type) 114㎡ ≈ 34.49 pyeong (the '34-pyeong' type)

Real examples

Example 1: Exact pyeong of an 84㎡ apartment

84 / 3.30579 = 25.408 pyeong. Rounded to 0.5 pyeong = 25.5 pyeong. Real estate listings of '25 pyeong' or '26 pyeong' usually refer to supply area (exclusive + common) or rounded conventions.

Example 2: 30 pyeong construction in ㎡

30 × 3.30579 = 99.17 ㎡. An interior estimate of 'KRW 1M per pyeong' for 30 pyeong is KRW 30M, which is KRW ~302,500 per ㎡.

Example 3: Japanese ja² drawing

A '108 ja²' label on a drawing → 108 × 0.0918 ≈ 9.91 ㎡ ≈ 3 pyeong. Useful when reading Japanese or old-Korean drawings.

Frequently asked questions

Exactly how many ㎡ is 1 pyeong?+

1 pyeong = 3,600 / 1,089 = exactly 3.30578512... ㎡. The 3.3 ㎡ rough estimate is common but accumulates errors at larger sizes. This calculator uses the exact ratio.

What is the difference between exclusive, supply, and contract area?+

Exclusive = livable space (rooms, living, bath). Supply = exclusive + shared residential (corridors, stairs). Contract = supply + other shared (parking, management). '84 ㎡' usually refers to exclusive area, while '25 pyeong type' refers to supply area roughly 80-90 ㎡.

Why is pyeong still in use?+

Korea has required metric units since 1961, but real estate and interior conventions remain pyeong-based. Official deeds and contracts use ㎡, while listings and casual use prefer pyeong.

Where is ja² (尺²) used?+

Old-Korean drawings, Japanese architecture, traditional medicine, and traditional furniture sizing. 1 pyeong = 36 ja², so conversion is straightforward.

Why show a '0.5-pyeong rounded' value separately?+

Real estate listings typically round to 0.5 pyeong (e.g., 25.4 → 25.5). The calculator shows both the exact value and the listing-style rounded value.

Can I use this for building/floor area ratios?+

No — this tool only handles unit conversion. Korean building coverage ratio (building area / lot area) and floor area ratio (gross floor area / lot area) follow zoning-specific limits and require building code calculations.

Cautions

  • •1 pyeong = 3.30579 ㎡ exactly. The 3.3 ㎡ shortcut accumulates errors at large areas.
  • •Real estate listings mix exclusive and supply area. Always verify the ㎡ on the official registration.
  • •Ja² is an old-Korean/Japanese unit. Confirm the drawing's origin when mixing units.
  • •Only ㎡ has legal force in official contracts and deeds. Pyeong is for everyday convenience.

Last reviewed: 2026-05-23

Pyeong Converter — pyeong ↔ m² ↔ ja² instant