| square centimeter | 1 cm2 | 2 cm2 | 3 cm2 | 4 cm2 | 5 cm2 | 6 cm2 | 7 cm2 | 8 cm2 | 9 cm2 | 10 cm2 | 11 cm2 | 12 cm2 | 13 cm2 | 14 cm2 | 15 cm2 | 16 cm2 | 17 cm2 | 18 cm2 | 19 cm2 | 20 cm2 | 21 cm2 | 22 cm2 | 23 cm2 | 24 cm2 | 25 cm2 | 26 cm2 | 27 cm2 | 28 cm2 | 29 cm2 | 30 cm2 | 31 cm2 | 32 cm2 | 33 cm2 | 34 cm2 | 35 cm2 | 36 cm2 | 37 cm2 | 38 cm2 | 39 cm2 | 40 cm2 | 41 cm2 | 42 cm2 | 43 cm2 | 44 cm2 | 45 cm2 | 46 cm2 | 47 cm2 | 48 cm2 | 49 cm2 | 50 cm2 | 51 cm2 | 52 cm2 | 53 cm2 | 54 cm2 | 55 cm2 | 56 cm2 | 57 cm2 | 58 cm2 | 59 cm2 | 60 cm2 | 61 cm2 | 62 cm2 | 63 cm2 | 64 cm2 | 65 cm2 | 66 cm2 | 67 cm2 | 68 cm2 | 69 cm2 | 70 cm2 | 71 cm2 | 72 cm2 | 73 cm2 | 74 cm2 | 75 cm2 | 76 cm2 | 77 cm2 | 78 cm2 | 79 cm2 | 80 cm2 | 81 cm2 | 82 cm2 | 83 cm2 | 84 cm2 | 85 cm2 | 86 cm2 | 87 cm2 | 88 cm2 | 89 cm2 | 90 cm2 | 91 cm2 | 92 cm2 | 93 cm2 | 94 cm2 | 95 cm2 | 96 cm2 | 97 cm2 | 98 cm2 | 99 cm2 | 100 cm2 |
| centiare | 0.0001 ca | 0.0002 ca | 0.0003 ca | 0.0004 ca | 0.0005 ca | 0.0006 ca | 0.0007 ca | 0.0008 ca | 0.0009 ca | 0.001 ca | 0.0011 ca | 0.0012 ca | 0.0013 ca | 0.0014 ca | 0.0015 ca | 0.0016 ca | 0.0017 ca | 0.0018 ca | 0.0019 ca | 0.002 ca | 0.0021 ca | 0.0022 ca | 0.0023 ca | 0.0024 ca | 0.0025 ca | 0.0026 ca | 0.0027 ca | 0.0028 ca | 0.0029 ca | 0.003 ca | 0.0031 ca | 0.0032 ca | 0.0033 ca | 0.0034 ca | 0.0035 ca | 0.0036 ca | 0.0037 ca | 0.0038 ca | 0.0039 ca | 0.004 ca | 0.0041 ca | 0.0042 ca | 0.0043 ca | 0.0044 ca | 0.0045 ca | 0.0046 ca | 0.0047 ca | 0.0048 ca | 0.0049 ca | 0.005 ca | 0.0051 ca | 0.0052 ca | 0.0053 ca | 0.0054 ca | 0.0055 ca | 0.0056 ca | 0.0057 ca | 0.0058 ca | 0.0059 ca | 0.006 ca | 0.0061 ca | 0.0062 ca | 0.0063 ca | 0.0064 ca | 0.0065 ca | 0.0066 ca | 0.0067 ca | 0.0068 ca | 0.0069 ca | 0.007 ca | 0.0071 ca | 0.0072 ca | 0.0073 ca | 0.0074 ca | 0.0075 ca | 0.0076 ca | 0.0077 ca | 0.0078 ca | 0.0079 ca | 0.008 ca | 0.0081 ca | 0.0082 ca | 0.0083 ca | 0.0084 ca | 0.0085 ca | 0.0086 ca | 0.0087 ca | 0.0088 ca | 0.0089 ca | 0.009 ca | 0.0091 ca | 0.0092 ca | 0.0093 ca | 0.0094 ca | 0.0095 ca | 0.0096 ca | 0.0097 ca | 0.0098 ca | 0.0099 ca | 0.01 ca |
Square centimetre (International spelling as used by the International Bureau of Weights and Measures) or square centimeter (American spelling), symbol cm2, is the SI unit of area or surface area.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| square centimeter | cm2 | ≡ 1 cm × 1 cm | = 10-4 m2 | Metric system SI |
| square centimeters | centiares | square centimeters | centiares |
|---|---|---|---|
| 1 | = 0.0001 | 6 | = 0.0006 |
| 2 | = 0.0002 | 7 | = 0.0007 |
| 3 | = 0.0003 | 8 | = 0.0008 |
| 4 | = 0.0004 | 9 | = 0.0009 |
| 5 | = 0.0005 | 10 | = 0.001 |
The centiare is one square metre.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| centiare | ca | = 1 m2 | = 1 m2 | Metric system SI |
| centiares | square centimeters | centiares | square centimeters |
|---|---|---|---|
| 1 | = 10000 | 6 | = 60000 |
| 2 | = 20000 | 7 | = 70000 |
| 3 | = 30000 | 8 | = 80000 |
| 4 | = 40000 | 9 | = 90000 |
| 5 | = 50000 | 10 | = 100000 |
| square centimeters | centiares |
|---|---|
| 1 | = 0.0001 |
| 10 000 | = 1 |
| Symbol | Definition |
|---|---|
| ≡ | exactly equal |
| ≈ | approximately equal to |
| = | equal to |
| digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |