Unit Converter
Convert length, weight, temperature, area, volume and speed to every unit at once, including Taiwan units like ping and catty.
Conversions
1 m equals:
- Millimeter (mm)
- Centimeter (cm)
- Meter (m)Input unit
- Kilometer (km)
- Inch (in)
- Foot (ft)
- Yard (yd)
- Mile (mi)
- Nautical mile (nmi)
- Taiwan foot (chi) (台尺)
- Taiwan inch (cun) (台寸)
Copied numbers have no thousands separators, ready to paste into a spreadsheet or code.
How to use
- Pick a category, such as “Area” or “Weight”.
- Enter a value and choose its unit, or click “Example” to see how many square meters 30 ping is.
- Every unit in the category is listed below right away. Click “Copy” next to any result to grab that number.
- Adjust “Decimal places” for more precise or tidier numbers. Very large or very small values switch to scientific notation.
FAQ
How big is a ping?
A ping (坪) is the Taiwanese unit for floor area used in real estate: exactly 400/121 m², about 3.3058 m² or 35.58 ft². It is a square with sides of 6 Taiwan feet (about 1.818 m).
What are the Taiwan catty and tael?
In Taiwan, 1 catty (台斤) is exactly 600 g and is split into 16 taels (兩) of 37.5 g each. They are still common at traditional markets and herbal shops.
What are jia and fen?
Taiwan land-area units: 1 jia (甲) = 10 fen (分) = 2,934 ping, about 9,699 m², close to one hectare.
Where do the conversion factors come from?
Imperial units follow the 1959 international yard and pound (1 yd = 0.9144 m, 1 lb = 0.45359237 kg), US volumes use 1 gallon = 231 in³, and Taiwan units use 1 台尺 = 10/33 m and 1 台斤 = 600 g. All are exact definitions; results are computed with double precision, about 15 significant digits.
Why can’t temperatures just be multiplied?
Celsius and Fahrenheit have different zero points, so values are converted through kelvin with an offset: 0 °C = 32 °F and 100 °C = 212 °F. Values below absolute zero are rejected.
Is my data uploaded?
No. All conversions happen in your browser, with no network connection needed.
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