Square Meters to Pyeong Converter (m² to 평)

Korean apartment notices, building registers and sales contracts give floor area in square meters, but buyers, tenants and older relatives still picture homes in pyeong (평). Converting takes a single multiplication: with the pyeong defined as 400/121 m², one square meter is exactly 0.3025 pyeong, so an 84 m² flat has about 25.4 pyeong of exclusive floor space.

The square-meter figure on a notice is usually the exclusive area (전용면적), the space inside the unit. The pyeong numbers heard in conversation often refer to supply area instead, which adds each unit's share of stairwells, corridors and lobbies, so an 84 m² unit is commonly called a 33- or 34-pyeong apartment. Converting the exclusive area here gives the private space only; the supply and exclusive area calculator (in Korean) handles the rest.

How to use this tool

1. Type a value in the Square Meter box to see it in pyeong, or type in the Pyeong box to convert the other way.
2. Press ⇄ to swap the two units, or Load example for a typical value.
3. Check the charts below for common values; for other units, open the Area converter.

Formula

pyeong = m² × 121 ÷ 400 = m² × 0.3025

m² = pyeong × 400 ÷ 121 (≈ pyeong × 3.305785)

Both factors come from exact definitions: 1 pyeong = 3.30578512397 square meters and 1 square meter = 0.3025 pyeong (shown to 12 significant digits).

Example

Two conversions worked with the same factors the converter uses:

84 m² × 0.3025 = 25.41 평

25 평 × 3.30578512397 ≈ 82.6446 m²

Square Meter to Pyeong chart

Common values from square meters to pyeong, rounded to four decimal places.

Pyeong to Square Meter chart

The reverse direction for values people often look up.

Korean floor areas set in square meters

Quick mental estimate

Take 30% and add a little: 84 m² gives 25.2, plus 84 ÷ 400 = 0.21, for 25.41 pyeong. Since 0.3025 = 0.3 + 1/400, the two steps are exact; stopping after the 30% step leaves you about 0.8% low.

Use the converter or the charts when the exact figure matters.

The two units

Square Meter (m²): The square metre is the SI unit of area, the area of a square 1 metre on each side. Floor space of homes and offices is given in square metres in most countries.

Pyeong (평): The pyeong (평) is a traditional Korean area unit. This converter uses 400/121 m² per pyeong, about 3.3058 m²; multiplying square metres by 0.3025 gives the equivalent number of pyeong.