Unit Converter
Type one number and see it in every unit of the category at once, Korean traditional units included.
Pyeong and square metres
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.
Korean traditional units
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.
Rounding
Results show 2–8 decimals depending on magnitude. Quote the original unit alongside in contracts and official documents.
Tips for common situations
Convert US Cups and Teaspoons to mL
Enter a single volume amount to see a complete table covering US cups, tablespoons, teaspoons, fluid ounces, quarts, gallons, and metric milliliters at once. One US cup equals approximately 236.59 mL, and the table lets you cross-check every unit without manual calculation.
Convert Parcel Weights from lbs to kg
Type a weight in pounds or ounces to populate a synchronized table showing kilograms, grams, milligrams, and metric tons alongside the imperial values. Precise decimal conversions help you verify international courier weight limits and avoid unexpected overweight fees.
Convert Square Metres to Pyeong
Enter a value in square metres under the area category to see the full conversion table including pyeong, hectares, acres, and square feet. Common apartment sizes like 59 or 84 square metres are instantly shown in pyeong for quick property comparisons.
Tried with sample values
Screens and numbers from actually running this tool with sample values (2026-10-06, Chromium-based browser on a Mac). Results vary with your input and device.
Entering the default value of 25 pyeong converts it to all nine area units at once: 82.6446 ㎡, 889.5794 ft², 98.8422 yd², and more.
Besides area, the tool covers length, weight, volume, temperature, data, and speed. Traditional Korean units such as ja, ri, geun, don, doe, and mal are included. Currency conversion is not available.
Frequently asked
Is anything uploaded?
No. The maths runs in your browser.
Are gallons and ounces US?
Yes: gal, qt, fl oz and cup are US units. An imperial gallon is 4.546 L.
Why 1024 for data?
This follows the operating system convention of 1 KB = 1024 B. Drive makers use 1000, which is why labelled capacities look larger.
How does the category conversion table work when I enter a single value?
Entering a single number in any unit automatically computes and displays a complete comparison table for all units in that category.
Which measurement categories are supported by the converter?
It covers seven categories: Area, Length, Weight, Volume, Temperature, Data storage (1024-based), and Speed.
Does the converter support traditional Korean units like pyeong or geun?
Yes, traditional units such as pyeong (area), geun/don/nyang (weight), ja/ri (length), and doe/mal (volume) are fully supported.
Does the tool support real-time currency and exchange rate conversions?
No, this calculator is strictly designed for physical and digital units of measurement and does not convert currencies.