Convert 3 feet 20 inches to centimeters

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How many centimeters in 3 feet 20 inches?

Answer

3'20" = 142.24 cm

3′20″ = 56″ · 1 in = 2.54 cm exactly, so the result is exact, not rounded

20 inches is at least a foot: 3′20″ = 4′8″

4′ = 121.92 cm · 8″ = 20.32 cm4 × 30.48 + 8 × 2.54 = 142.24 cm

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FAQ

How many centimeters in 3 feet 20 inches?

3'20" = 142.24 cm

What is the formula to convert 3 feet 20 inches to centimeters?

A foot is exactly 30.48 cm and an inch exactly 2.54 cm, so multiply each part and add them up: 3 feet 20 inches = 142.24 cm.

How do you convert 142.24 cm back to feet and inches?

Divide by 2.54 to get the total inches, then divide that by 12: the whole part is the feet and the remainder is the inches. That takes 142.24 cm back to 3 feet 20 inches.

Is 142.24 cm an exact value or a rounded one?

Exact. The inch has been defined as exactly 2.54 cm since the 1959 international yard and pound agreement, and a foot as twelve of them, so converting 3 feet 20 inches introduces no approximation.