55 inches in cm

139.7 cm

55 in = 139.7 cm = 1397 mm = 1.397 m

Working: 55 × 2.54 = 139.7

55 inches is 139.7 centimetres, or 1397 millimetres.

The conversion is exact rather than approximate: since 1959 the international inch has been defined as precisely 2.54 centimetres, so multiplying by 2.54 gives an exact answer with no rounding error. 55 × 2.54 = 139.7 cm. To go back the other way, divide by 2.54; for millimetres, multiply the inches by 25.4 instead.

Metric trades work in millimetres rather than centimetres, and 55 inches is 1397 mm — the figure a drawing or a parts list would actually carry. The nearest whole centimetre is 140, 0.3 cm away. In feet that is 4.58.

Fifty-five inches is currently the most common television size sold, at 139.7 cm on the diagonal. A 16:9 panel this size measures roughly 122 cm wide and 68 cm tall, which is the pair of numbers a wall mount or cabinet actually has to accommodate.

Nearby lengths

Inches	Centimetres
15 in	38.1 cm
18 in	45.72 cm
24 in	60.96 cm
27 in	68.58 cm
32 in	81.28 cm
40 in	101.6 cm
48 in	121.92 cm
65 in	165.1 cm

Try another value

From

3.2808ft

All units

Millimeters1,000 mm

Centimeters100 cm

Meters1 m

Kilometers0.001 km

Inches39.3701 in

Feet3.2808 ft

Yards1.0936 yd

Miles0.00062137 mi

Nautical miles0.00053996 nmi

Frequently asked questions

How many cm is 55 inches?

55 inches is 139.7 cm. Multiply the number of inches by 2.54 to convert to centimetres.

Is the inch to cm conversion exact?

Yes. The international inch has been defined as exactly 2.54 centimetres since 1959, so the conversion introduces no rounding error.

For any other value, use the full Length Converter on BrainVert.