CalcHub
Free unit conversionAs of 2026
Go to Unit Conversion Calculator
Instantly calculate frequently used unit conversions.
Apartment Size Calculator
popularityMutual conversion between m² and pyeong, calculation of gross and net area
m²평Supply area
Shoe size conversion
popularityUS·Europe·China·Japan·UK Shoe Size Conversion
USAeuropeUKchinajapan
Length conversion
suggestionkm·m·cm·mm·inch·foot·yard·mile conversion
kmminchfeet
Weight conversion
suggestionWeight conversion in kg, g, lb, oz, ton, carat, and geun units
kglbpoundoz.
Temperature conversion
suggestionInstant Celsius, Fahrenheit, Kelvin, and Rankine temperature conversion
CelsiusFahrenheitKelvin
Speed conversion
newkm/h·m/s·mph·knot·Mach speed conversion
km/hm/smph
Area transformation
newArea conversion m² · pyeong · hectare · acre · km²
m²평hectare
Pressure conversion
newPa·kPa·bar·atm·psi·mmHg Pressure conversion
PabarATMpsi
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Guide to Using the Unit Conversion Calculator
Instantly calculates unit conversions frequently needed in daily life, travel, and studies.
Frequently Used Conversion Formulas
1 pyeong = 3.3058 m² · 1 m² = 0.3025 pyeong
1 inch = 2.54 cm · 1 foot = 30.48 cm · 1 mile = 1.609 km
1 pound (lb) = 0.4536 kg · 1 ounce (oz) = 28.35 g
Celsius (°C) = (Fahrenheit – 32) × 5/9
1 inch = 2.54 cm · 1 foot = 30.48 cm · 1 mile = 1.609 km
1 pound (lb) = 0.4536 kg · 1 ounce (oz) = 28.35 g
Celsius (°C) = (Fahrenheit – 32) × 5/9
Shoe size conversions may vary by 0.5 to 1 size depending on the brand and manufacturer. We recommend taking actual measurements before purchasing.
Frequently Asked Questions
How much is a 33-pyeong apartment in m²?
33 pyeong × 3.3058 = approximately 109.1 m². The supply area (sale area) includes common areas and differs from the exclusive area.
How many millimeters is a US shoe size 9 in Korean millimeters?
US men's 9 is approximately 270mm (27cm), and women's 9 is approximately 260mm (26cm). There may be differences depending on the brand.
What is 72 degrees Fahrenheit in Celsius?
(72 – 32) × 5/9 = 22.2℃. A US weather forecast of 72℉ is pleasant weather.