6 inches is 19.98 centimeters.

Cun is the Chinese unit of length measurement, and centimeter is the international unit of length measurement.

Because 1 inch = 3.33 centimeters.

So 6 inches = 6x3.33 cm = 19.98 cm.

That is, 6 inches is equal to 19.98 centimeters.

Extended information:

1. International length measurement units

(1) International length measurement units include microns, millimeters, centimeters, decimeters, and meters.

(2) Conversion relationship between units

1 meter = 10 decimeters, 1 decimeter = 10 centimeters, 1 centimeter = 10 millimeters, 1 millimeter = 1000 microns.

1 meter = 10 decimeters = 100 centimeters = 1000 millimeters = 1,000,000 microns.

2. Chinese units of length measurement

(1) The traditional Chinese units of length include feet, feet, inches, centimeters, and minutes.

(2) Conversion relationship between units

1 foot=10 feet, 1 foot=10 inches, 1 inch=10 minutes, 1 minute=10 centimeters.

1 foot≈3.33 meters, 1 foot≈3.33 decimeters, 1 inch≈3.33 centimeters.