Formula

cm² = in² x 6.45

Quick Rough Maths

To get the Square Centimetres, multiply the number of Square Inches by 6.5

Square Inches (in²) in 1 Square Centimetre

There are 0.16 Square Inches in 1 Square Centimetre

Square Centimetres (cm²) in 1 Square Inch

There are 6.45 Square Centimetres in 1 Square Inch

Symbol: **in²**

Unit System: Imperial

Unit System: Imperial

The square inch is a unit of area and is an imperial unit with the symbol in².

One square inch is equal in area to a square with edges one inch in length.

The square inch is a common unit of measurement in the UK and US.

Symbol: **cm²**

Unit System: SI

Unit System: SI

The square centimetre is a unit of area and is a multiple of the square metre; an SI derived unit. It has the symbol cm².

A square centimetre is equal to the area of a square with edges 1cm long. There are 10,000 square centimetres in a square metre.

It is often used to describe areas smaller than 1m² - including much work in classrooms on paper.

1in² = 6.45cm²

2in² = 12.9cm²

3in² = 19.35cm²

4in² = 25.8cm²

5in² = 32.25cm²

6in² = 38.7cm²

7in² = 45.15cm²

8in² = 51.6cm²

9in² = 58.05cm²

10in² = 64.5cm²

11in² = 70.95cm²

12in² = 77.4cm²

13in² = 83.85cm²

14in² = 90.3cm²

15in² = 96.75cm²

16in² = 103.2cm²

17in² = 109.65cm²

18in² = 116.1cm²

19in² = 122.55cm²

20in² = 129cm²

21in² = 135.45cm²

22in² = 141.9cm²

23in² = 148.35cm²

24in² = 154.8cm²

26in² = 167.7cm²

27in² = 174.15cm²

28in² = 180.6cm²

29in² = 187.05cm²

30in² = 193.5cm²

31in² = 199.95cm²

32in² = 206.4cm²

33in² = 212.85cm²

34in² = 219.3cm²

35in² = 225.75cm²

36in² = 232.2cm²

37in² = 238.65cm²

38in² = 245.1cm²

39in² = 251.55cm²

40in² = 258cm²

41in² = 264.45cm²

42in² = 270.9cm²

43in² = 277.35cm²

44in² = 283.8cm²

45in² = 290.25cm²

46in² = 296.7cm²

47in² = 303.15cm²

48in² = 309.6cm²

49in² = 316.05cm²

51in² = 328.95cm²

52in² = 335.4cm²

53in² = 341.85cm²

54in² = 348.3cm²

55in² = 354.75cm²

56in² = 361.2cm²

57in² = 367.65cm²

58in² = 374.1cm²

59in² = 380.55cm²

60in² = 387cm²

61in² = 393.45cm²

62in² = 399.9cm²

63in² = 406.35cm²

64in² = 412.8cm²

65in² = 419.25cm²

66in² = 425.7cm²

67in² = 432.15cm²

68in² = 438.6cm²

69in² = 445.05cm²

70in² = 451.5cm²

71in² = 457.95cm²

72in² = 464.4cm²

73in² = 470.85cm²

74in² = 477.3cm²

76in² = 490.2cm²

77in² = 496.65cm²

78in² = 503.1cm²

79in² = 509.55cm²

80in² = 516cm²

81in² = 522.45cm²

82in² = 528.9cm²

83in² = 535.35cm²

84in² = 541.8cm²

85in² = 548.25cm²

86in² = 554.7cm²

87in² = 561.15cm²

88in² = 567.6cm²

89in² = 574.05cm²

90in² = 580.5cm²

91in² = 586.95cm²

92in² = 593.4cm²

93in² = 599.85cm²

94in² = 606.3cm²

95in² = 612.75cm²

96in² = 619.2cm²

97in² = 625.65cm²

98in² = 632.1cm²

99in² = 638.55cm²