Question 1

What is a sun in Japanese measurement?

Accepted Answer

A sun (寸) is 1/10 of a shaku, equal to 3.03 cm. Used for traditional crafts and food portions. 10 bu = 1 sun.

Question 2

How is sun used in cooking?

Accepted Answer

Sushi pieces are often 1 sun wide. Traditional Japanese recipes may specify ingredient sizes in sun for authentic proportions.

Question 3

Is this conversion factor exact?

Accepted Answer

Metric-to-metric conversions are exact (1 km = 1000 m). Imperial-to-metric factors like 1 inch = 2.54 cm are exact by international agreement.

Question 4

Why do some countries use different units?

Accepted Answer

Historical reasons - the metric system spread from France after 1795. The US, UK, and a few others retained older systems. Science uses metric worldwide.

sun to cm Converter

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