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Taiwanese units of measurement

Taiwanese units of measurement is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Taiwanese units of measurement rather than just read about it. In short: Taiwanese units of measurement (Chinese: 臺制; pinyin: Táizhì; Pe̍h-ōe-jī: Tâi-chè; Hakka: Thòi-chṳ) are the customary and traditional units of measure used in Taiwan. The Taiwanese units formed in the 1900s when Taiwan was under Japanese rule.

Taiwanese units of measurement — main illustration
Taiwanese units of measurement — illustration

Key takeaways

  • Taiwanese units of measurement belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Taiwanese units of measurement to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Taiwanese units of measurement from memory before moving on to harder problems.

Reference excerpt

Taiwanese units of measurement (Chinese: 臺制; pinyin: Táizhì; Pe̍h-ōe-jī: Tâi-chè; Hakka: Thòi-chṳ) are the customary and traditional units of measure used in Taiwan. The Taiwanese units formed in the 1900s when Taiwan was under Japanese rule. The system mainly refers to Japanese system. The measurement refers to the traditional size of a tatami, a Japanese mat made of woven dried grass, which were positioned to completely cover the floor of traditional Japanese homes, therefore it became a convenient measurement tool as mat area was standardised hundreds of years ago. In Taiwan the measurement units were pronounced in Taiwanese Hokkien and Hakka before World War II and adopted by the Mandarin-speaking immigrants from China in 1949. Today, the Taiwanese units are used exclusively, in some cases alongside official SI units, and in other cases they have been replaced by SI. Although the Taiwanese units have similar names to those in Chinese units of measurement and Hong Kong units of measurement, the standards are different from those used in China and Hong Kong due to them being Japanese in origin. The Taiwanese units are not used in the Chinese territories of Kinmen and Matsu, as although they are under the control of the Republic of China, these places have never been under Japanese rule. Instead, they retain the use of Chinese units in the Republican era, which are based on metric values and still mostly the same as People's Republic of China.

Length Linear measure in Taiwan is largely metric but some units derived from traditional Japanese units of measurement remain in use as a legacy of Japanese rule.

Taiwanese length units and the translation of length units in metric system (SI) shares the same character. The adjective Taiwanese (台) can be added to address the Taiwanese unis system. For example, 台尺 means Taiwanese foot and 公尺 means meter.

Area

Unlike with other measures, area continues to be almost commonly measured with traditional units. Taiwanese units of area are derived from both traditional Dutch and Japanese measurements. The principal unit for measuring the floor space of an office or apartment is 坪 (Taiwanese Hokkien: pêⁿ, Hakka: phiàng, Mandarin: píng). The unit is derived from the Japanese tsubo, the base unit of the Japanese area. The principal unit of land measure is 甲 (Taiwanese Hokkien: kah, Hakka: kap, Mandarin: jiǎ). The unit is derived from the obsolete Dutch morgen, which was introduced during Taiwan's Dutch era. In the later era Kingdom of Tungning, 犁 (Taiwanese Hokkien: lê, Hakka: lài, Mandarin: lí) is defined to represent the area that could be farmed by one man with one ox and one plow in one day. Today, the rule for converting the two major units from two different sources is

1 甲 (Taiwanese Hokkien: kah, Hakka: kap, Mandarin: jiǎ, Dutch morgen) = 2,934 坪 (Taiwanese Hokkien: pêⁿ, Hakka: phiàng, Mandarin: píng, Japanese tsubo)

Officially, land area is measured in square metres.

Volume Volume measure in Taiwan is largely metric, with common units such as liter and milliliter (often abbreviated as "CC" for cubic centimeter).

Mass

Packaged goods in Taiwan largely use metric measurements but bulk foodstuffs sold in wet markets and supermarkets are typically measured with units derived from traditional Japanese units of mass, which are similar but not equivalent to corresponding Chinese units of mass. Imported goods from the US also retains its weight in ounces, although most such packages also lists the weight in grams.

Note the tael and catty are widely used.

See also Units, Systems, & History of measurement Chinese & Hong Kong units of measurement Japanese, Korean, Mongolian & Vietnamese units of measurement

Notes

References

External links Weights and Measures in Use in Taiwan

Illustrations

Taiwanese units of measurement: Fruit sold in catties (斤) in a Taiwanese market
Fruit sold in catties (斤) in a Taiwanese market

Worked examples

Example 1 — a first encounter with Taiwanese units of measurement

Start with the simplest possible case. Write down what Taiwanese units of measurement claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Taiwanese units of measurement before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Taiwanese units of measurement ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Taiwanese units of measurement

In research
Taiwanese units of measurement appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Taiwanese units of measurement in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Taiwanese units of measurement is common in secondary-school and first-year university syllabi. It links to neighbouring topics Hokkien-language phrases, Systems of units, Units of measurement by country, so understanding it makes those chapters shorter.
In everyday life
Look for Taiwanese units of measurement outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Taiwanese units of measurement in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Taiwanese units of measurement means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Taiwanese units of measurement out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Taiwanese units of measurement in simple terms?

Taiwanese units of measurement (Chinese: 臺制; pinyin: Táizhì; Pe̍h-ōe-jī: Tâi-chè; Hakka: Thòi-chṳ) are the customary and traditional units of measure used in Taiwan. The Taiwanese units formed in the 1900s when Taiwan was under Japanese rule.

Why does Taiwanese units of measurement matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Taiwanese units of measurement?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Taiwanese units of measurement.

Tags

  • Hokkien-language phrases
  • Systems of units
  • Units of measurement by country

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