cm to inches
Centimeters to Inches: in = cm ÷ 2.54. Type a number and read the answer straight off the scale.
cm to inches chart of common values
| Centimeters | Inches |
|---|---|
| 1 cm | 0.39 in |
| 2 cm | 0.79 in |
| 3 cm | 1.18 in |
| 4 cm | 1.57 in |
| 5 cm | 1.97 in |
| 6 cm | 2.36 in |
| 7 cm | 2.76 in |
| 8 cm | 3.15 in |
| 9 cm | 3.54 in |
| 10 cm | 3.94 in |
| 11 cm | 4.33 in |
| 12 cm | 4.72 in |
| 13 cm | 5.12 in |
| 14 cm | 5.51 in |
| 15 cm | 5.91 in |
| 16 cm | 6.3 in |
| 17 cm | 6.69 in |
| 18 cm | 7.09 in |
| 19 cm | 7.48 in |
| 20 cm | 7.87 in |
| 25 cm | 9.84 in |
| 30 cm | 11.81 in |
| 35 cm | 13.78 in |
| 40 cm | 15.75 in |
| 45 cm | 17.72 in |
| 50 cm | 19.69 in |
| 60 cm | 23.62 in |
| 70 cm | 27.56 in |
| 75 cm | 29.53 in |
| 80 cm | 31.5 in |
| 90 cm | 35.43 in |
| 100 cm | 39.37 in |
| 120 cm | 47.24 in |
| 150 cm | 59.06 in |
| 200 cm | 78.74 in |
How to convert centimeters to inches
The formula
in = cm ÷ 2.54. Dividing by 2.54 is the same as multiplying by 0.39370079.
Worked through for 15
Divide 15 by 2.54. The result is 5.905512 in to six places. Rounded, that is 5.91 in.
In your head
Multiply by 4 and divide by 10: 15 cm → 60 ÷ 10 = 6 in (a little high).
Every cm to inches page
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
- 25
- 26
- 27
- 28
- 29
- 30
- 31
- 32
- 33
- 34
- 35
- 36
- 37
- 38
- 39
- 40
- 41
- 42
- 43
- 44
- 45
- 46
- 47
- 48
- 49
- 50
- 51
- 52
- 53
- 54
- 55
- 56
- 57
- 58
- 59
- 60
- 61
- 62
- 63
- 64
- 65
- 66
- 67
- 68
- 69
- 70
- 71
- 72
- 73
- 74
- 75
- 76
- 77
- 78
- 79
- 80
- 81
- 82
- 83
- 84
- 85
- 86
- 87
- 88
- 89
- 90
- 91
- 92
- 93
- 94
- 95
- 96
- 97
- 98
- 99
- 100
- 101
- 102
- 103
- 104
- 105
- 106
- 107
- 108
- 109
- 110
- 111
- 112
- 113
- 114
- 115
- 116
- 117
- 118
- 119
- 120
- 121
- 122
- 123
- 124
- 125
- 126
- 127
- 128
- 129
- 130
- 131
- 132
- 133
- 134
- 135
- 136
- 137
- 138
- 139
- 140
- 141
- 142
- 143
- 144
- 145
- 146
- 147
- 148
- 149
- 150
- 151
- 152
- 153
- 154
- 155
- 156
- 157
- 158
- 159
- 160
- 161
- 162
- 163
- 164
- 165
- 166
- 167
- 168
- 169
- 170
- 171
- 172
- 173
- 174
- 175
- 176
- 177
- 178
- 179
- 180
- 181
- 182
- 183
- 184
- 185
- 186
- 187
- 188
- 189
- 190
- 191
- 192
- 193
- 194
- 195
- 196
- 197
- 198
- 199
- 200
Decimals
The other way: inches to cm.
Questions
What is the formula for cm to inches?
in = cm ÷ 2.54. One centimeter is 0.393701 inches.
How can I estimate it in my head?
Multiply by 4 and divide by 10: 15 cm → 60 ÷ 10 = 6 in (a little high).
Where do the conversion factors come from?
The pound and the inch were defined in metric units by the 1959 international yard and pound agreement: one pound is exactly 0.45359237 kg and one inch is exactly 2.54 cm.