How many inches is 4 cm?

4 centimetres = 1.57 inches. Divide cm by 2.54 to convert.

What is 4 cm in feet and inches?

4 cm ≈ 0′2″ — useful for human height.

Divide by 2.5: 4 ÷ 2.5 = 1.6 inches. Exact: 1.57 inches.

4 cm equals 1.57 in.

Formula: cm × 0.393701 = in

4 cm =

1.57in

Feet

0.13 ft

Millimetres

40 mm

Computed to 3 decimal places using factor 0.393701. For engineering or safety-critical uses verify against a calibrated reference.

Reference table

centimetres (cm)	inches (in)	Feet	Millimetres
1 cm	0.39 in	0.03 ft	10 mm
2 cm	0.79 in	0.07 ft	20 mm
3 cm	1.18 in	0.1 ft	30 mm
4 cm	1.57 in	0.13 ft	40 mm
5 cm	1.97 in	0.16 ft	50 mm
6 cm	2.36 in	0.2 ft	60 mm
7 cm	2.76 in	0.23 ft	70 mm
8 cm	3.15 in	0.26 ft	80 mm
9 cm	3.54 in	0.3 ft	90 mm
10 cm	3.94 in	0.33 ft	100 mm

By use case

Small objects

pocket / tool

Screens / TVs

display diagonals

Height

human stature

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FAQ

How many inches is 4 cm?: 4 centimetres = 1.57 inches. Divide cm by 2.54 to convert.
What is 4 cm in feet and inches?: 4 cm ≈ 0′2″ — useful for human height.
How to convert 4 cm to inches mentally?: Divide by 2.5: 4 ÷ 2.5 = 1.6 inches. Exact: 1.57 inches.

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