Type one number and see it in every unit of the category at once, Korean traditional units included.
1 pyeong (평) = 3.3058 m² (exactly 400/121 m²). A Korean 84 m² flat is 25.4 pyeong; 59 m² is 17.8. Metric units are the legal standard, and since July 2007 real-estate listings that show pyeong alone are subject to fines, yet pyeong remains common in listings and conversation.
1 geun (근) = 600 g (16 nyang), 1 don (돈) = 3.75 g and 1 nyang = 37.5 g for gold, 1 doe (되) ≈ 1.8 L and 1 mal ≈ 18 L for grain, 1 ja (자) = 30.3 cm, 1 ri ≈ 393 m. Market practice varies by region.
Results show 2–8 decimals depending on magnitude. Quote the original unit alongside in contracts and official documents.
No. The maths runs in your browser.
Yes: gal, qt, fl oz and cup are US units. An imperial gallon is 4.546 L.
This follows the operating system convention of 1 KB = 1024 B. Drive makers use 1000, which is why labelled capacities look larger.