Full name: pouce
Plural form: pouces
Category type: length
Scale factor: 0.0254
The SI base unit for length is the metre.
1 metre is equal to 39.3700787402 pouce.
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The pouce is a French "inch" unit. The modern definition from the international standard of units is that 1 inch = 2.54 cm or 1 pouce = 25.4 mm. The word pouce means "thumb" in French. In past history, it was equal to 1/12 pied. Based on the pied de roi, the historical pouce was equal to about 1.066 inches or 2.707 centimeters.